{"id":23521,"date":"2026-09-07T10:04:41","date_gmt":"2026-09-07T10:04:41","guid":{"rendered":"https:\/\/lead-pcb.com\/?p=23521"},"modified":"2026-10-22T10:06:02","modified_gmt":"2026-10-22T10:06:02","slug":"controlled-impedance-pcb-guide","status":"publish","type":"post","link":"https:\/\/lead-pcb.com\/ja\/blog\/controlled-impedance-pcb-guide\/","title":{"rendered":"\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u5236\u5fa1PCB\u8a2d\u8a08\uff1a\u30b9\u30bf\u30c3\u30af\u30a2\u30c3\u30d7\u3001\u4ed5\u69d8\u3001\u8a66\u9a13"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u5236\u5fa1\u3068\u306f\u3001PCB\u914d\u7dda\u306e\u7279\u6027\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u6307\u5b9a\u3055\u308c\u305f\u76ee\u6a19\u5024\u3068\u8a31\u5bb9\u5dee\u3092\u6e80\u305f\u3059\u3088\u3046\u306b\u8a2d\u8a08\u30fb\u88fd\u9020\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u305d\u306e\u7d50\u679c\u306f\u3001\u5c0e\u4f53\u306e\u5f62\u72b6\u3001\u8a98\u96fb\u4f53\u306e\u69cb\u6210\u3001\u57fa\u6e96\u9762\u306b\u3088\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u5b8c\u5168\u306a\u8981\u4ef6\u306b\u306f\u3001\u88fd\u9020\u5f8c\u306e\u69cb\u9020\u3092\u30e1\u30fc\u30ab\u30fc\u304c\u3069\u306e\u3088\u3046\u306b\u691c\u8a3c\u3059\u308b\u304b\u3082\u8a18\u8f09\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c50 \u03a9\u300d\u3068\u3060\u3051\u8a18\u8f09\u3057\u3066\u3082\u3001\u91cd\u8981\u306a\u6c7a\u5b9a\u4e8b\u9805\u304c\u672a\u78ba\u5b9a\u306e\u307e\u307e\u3067\u3059\u3002\u3069\u306e\u30cd\u30c3\u30c8\u3068\u5c64\u304c\u5bfe\u8c61\u3067\u3059\u304b\u3002\u76ee\u6a19\u5024\u306f\u30b7\u30f3\u30b0\u30eb\u30a8\u30f3\u30c9\u3067\u3059\u304b\u3001\u305d\u308c\u3068\u3082\u5dee\u52d5\u3067\u3059\u304b\u3002\u88fd\u9020\u696d\u8005\u304c\u914d\u7dda\u5e45\u3092\u5909\u66f4\u3057\u3066\u3082\u3088\u3044\u3067\u3059\u304b\u3002\u3069\u306e\u3088\u3046\u306a\u6e2c\u5b9a\u7d50\u679c\u3092\u5408\u683c\u3068\u3057\u307e\u3059\u304b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u6c7a\u5b9a\u4e8b\u9805\u306b\u3088\u3063\u3066\u3001\u56de\u8def\u8a2d\u8a08\u3068\u88fd\u9020\u767a\u6ce8\u304c\u7d50\u3073\u4ed8\u304d\u307e\u3059\u3002\u57fa\u677f\u3092\u30ea\u30ea\u30fc\u30b9\u3059\u308b\u524d\u306b\u5408\u610f\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u8981\u70b9<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4fe1\u53f7\u306e\u30a8\u30c3\u30b8\u6642\u9593\u3068\u4f1d\u642c\u9045\u5ef6\u3092\u8a55\u4fa1\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u5236\u5fa1\u306e\u5fc5\u8981\u6027\u306f\u3001\u30af\u30ed\u30c3\u30af\u5468\u6ce2\u6570\u3060\u3051\u3067\u306f\u6c7a\u307e\u308a\u307e\u305b\u3093\u3002<\/li>\n\n\n\n<li>\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u30e2\u30fc\u30c9\u3001\u30cd\u30c3\u30c8\u30af\u30e9\u30b9\u3001\u4fe1\u53f7\u5c64\u3001\u57fa\u6e96\u9762\u3001\u76ee\u6a19\u5024\u3001\u8a31\u5bb9\u5dee\u3092\u307e\u3068\u3081\u3066\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n\n\n\n<li>\u5b9f\u969b\u306e\u6750\u6599\u69cb\u6210\u3068\u88fd\u9020\u7528\u30b9\u30bf\u30c3\u30af\u30a2\u30c3\u30d7\u306b\u57fa\u3065\u304d\u3001\u5b8c\u6210\u3057\u305f\u914d\u7dda\u5f62\u72b6\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n\n\n\n<li>\u88fd\u9020\u524d\u306b\u3001\u30af\u30fc\u30dd\u30f3\u3001TDR\u6e2c\u5b9a\u65b9\u6cd5\u3001\u6e2c\u5b9a\u7bc4\u56f2\u3001\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3001\u5408\u5426\u5224\u5b9a\u57fa\u6e96\u306b\u3064\u3044\u3066\u5408\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n\n\n\n<li>\u30af\u30fc\u30dd\u30f3\u306e\u5408\u683c\u306f\u3001\u88fd\u9020\u30d7\u30ed\u30bb\u30b9\u306e\u691c\u8a3c\u3092\u88cf\u4ed8\u3051\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u914d\u7dda\u3055\u308c\u305f\u3059\u3079\u3066\u306e\u30cd\u30c3\u30c8\u3084\u30c1\u30e3\u30cd\u30eb\u5168\u4f53\u3092\u8a8d\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">PCB\u914d\u7dda\u306b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u5236\u5fa1\u304c\u5fc5\u8981\u306a\u306e\u306f\u3069\u306e\u3088\u3046\u306a\u5834\u5408\u3067\u3059\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u5fc5\u8981\u3068\u3055\u308c\u308b\u5834\u5408\u3001\u307e\u305f\u306f\u4f1d\u9001\u7dda\u8def\u306e\u5f71\u97ff\u304c\u4fe1\u53f7\u306b\u95a2\u308f\u308b\u5834\u5408\u306f\u3001PCB\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u5236\u5fa1\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30c7\u30d0\u30a4\u30b9\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3068\u96fb\u6c17\u7684\u8981\u4ef6\u3092\u78ba\u8a8d\u3057\u3001\u914d\u7dda\u306e\u4f1d\u642c\u6642\u9593\u3092\u3001\u95a2\u4fc2\u3059\u308b\u6700\u901f\u306e\u7acb\u3061\u4e0a\u304c\u308a\u6642\u9593\u307e\u305f\u306f\u7acb\u3061\u4e0b\u304c\u308a\u6642\u9593\u3068\u6bd4\u8f03\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a8\u30c3\u30b8\u6642\u9593\u3068\u4f1d\u642c\u9045\u5ef6\u3092\u6bd4\u8f03\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30af\u30ed\u30c3\u30af\u306e\u7e70\u308a\u8fd4\u3057\u5468\u6ce2\u6570\u3068\u30a8\u30c3\u30b8\u6642\u9593\u306f\u3001\u7570\u306a\u308b\u7279\u6027\u3092\u8868\u3057\u307e\u3059\u3002\u540c\u3058\u30af\u30ed\u30c3\u30af\u5468\u6ce2\u6570\u3067\u52d5\u4f5c\u3059\u308b\u30c9\u30e9\u30a4\u30d0\u30fc\u3067\u3082\u3001\u7acb\u3061\u4e0a\u304c\u308a\u6642\u9593\u306f\u5927\u304d\u304f\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002Tektronix\u306e <a href=\"https:\/\/www.tek.com\/de\/documents\/whitepaper\/probe-card-tutorial\">\u30d7\u30ed\u30fc\u30d6\u30ab\u30fc\u30c9\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb<\/a> \u3067\u306f\u3001\u7e70\u308a\u8fd4\u3057\u5468\u6ce2\u6570\u3068\u3001\u30d1\u30eb\u30b9\u5f62\u72b6\u3092\u4fdd\u3064\u305f\u3081\u306b\u5fc5\u8981\u306a\u5e2f\u57df\u5e45\u304c\u533a\u5225\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30a8\u30c3\u30b8\u304c\u901f\u3044\u307b\u3069\u3001\u3088\u308a\u9ad8\u3044\u5468\u6ce2\u6570\u6210\u5206\u3078\u306e\u914d\u616e\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3068\u3057\u3066\u3001\u4f1d\u642c\u901f\u5ea6\u3092 <strong>150 mm\/ns<\/strong>:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7247\u9053\u9045\u5ef6 = \u914d\u7dda\u9577 \u00f7 \u901f\u5ea6 = 30 mm \u00f7 150 mm\/ns = 0.2 ns\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u9045\u5ef6\u306f\u30015 ns\u306e\u30a8\u30c3\u30b8\u306b\u5bfe\u3059\u308b\u5834\u5408\u3088\u308a\u3082\u30010.5 ns\u306e\u30a8\u30c3\u30b8\u306b\u5bfe\u3057\u3066\u306f\u308b\u304b\u306b\u5927\u304d\u306a\u5272\u5408\u3092\u5360\u3081\u307e\u3059\u3002\u3053\u3053\u3067\u4eee\u5b9a\u3057\u305f\u901f\u5ea6\u306f\u8a08\u7b97\u4f8b\u3067\u3042\u308a\u3001FR-4\u306b\u666e\u904d\u7684\u306b\u5f53\u3066\u306f\u307e\u308b\u7279\u6027\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8a2d\u8a08\u3092\u8a55\u4fa1\u3059\u308b\u969b\u306f\u3001\u5b9f\u969b\u306e\u30b9\u30bf\u30c3\u30af\u30a2\u30c3\u30d7\u306e\u9045\u5ef6\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3042\u3089\u3086\u308b\u57fa\u677f\u306b\u9069\u7528\u3067\u304d\u308b\u5358\u4e00\u306e\u30af\u30ed\u30c3\u30af\u5468\u6ce2\u6570\u306e\u3057\u304d\u3044\u5024\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304a\u3088\u3073\u30c7\u30d0\u30a4\u30b9\u306e\u8981\u4ef6\u306b\u5f93\u3046<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5404\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u3064\u3044\u3066\u3001\u5fc5\u8981\u306a\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3001\u8a31\u5bb9\u5dee\u3001\u914d\u7dda\u30c8\u30dd\u30ed\u30b8\u30fc\u3001\u7d42\u7aef\u65b9\u5f0f\u3092\u8a18\u9332\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u8a72\u5f53\u3059\u308b\u30c7\u30d0\u30a4\u30b9\u3068\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u6539\u8a02\u7248\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u78ba\u8a8d\u305b\u305a\u306b\u3001\u3042\u308b\u4e16\u4ee3\u3084\u30c8\u30dd\u30ed\u30b8\u30fc\u306e\u76ee\u6a19\u5024\u3092\u5225\u306e\u3082\u306e\u306b\u6d41\u7528\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305f\u3001\u5c64\u306e\u5909\u66f4\u3001\u57fa\u6e96\u9762\u306e\u5207\u308c\u76ee\u3001\u30b3\u30cd\u30af\u30bf\u30fc\u3001\u30d3\u30a2\u3082\u8abf\u3079\u3066\u304f\u3060\u3055\u3044\u3002\u9577\u304f\u5747\u4e00\u306a\u914d\u7dda\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u5236\u5fa1\u3057\u3066\u3082\u3001\u4fe1\u53f7\u7d4c\u8def\u306e\u307b\u304b\u306e\u7b87\u6240\u306b\u3042\u308b\u4e0d\u9023\u7d9a\u6027\u306f\u89e3\u6d88\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b7\u30f3\u30b0\u30eb\u30a8\u30f3\u30c9\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3001\u5dee\u52d5\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u6574\u5408<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6570\u5024\u3092\u6307\u5b9a\u3059\u308b\u524d\u306b\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u30e2\u30fc\u30c9\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u300250 \u03a9\u306e\u30b7\u30f3\u30b0\u30eb\u30a8\u30f3\u30c9\u7dda\u8def\u3068100 \u03a9\u306e\u5dee\u52d5\u30da\u30a2\u306f\u3001\u6570\u5024\u4e0a\u306e\u95a2\u4fc2\u304c\u5206\u304b\u308a\u3084\u3059\u304f\u3066\u3082\u3001\u7570\u306a\u308b\u96fb\u6c17\u7684\u69cb\u9020\u3092\u8868\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u8981\u4ef6<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u8aac\u660e\u3059\u308b\u5185\u5bb9<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u6307\u5b9a\u3059\u308b\u5185\u5bb9<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">\u30b7\u30f3\u30b0\u30eb\u30a8\u30f3\u30c9\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u57fa\u6e96\u69cb\u9020\u306b\u5bfe\u3059\u308b\u5358\u4e00\u306e\u4fe1\u53f7\u5c0e\u4f53<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4fe1\u53f7\u5c64\u3001\u57fa\u6e96\u9762\u3001\u914d\u7dda\u5f62\u72b6\u3001\u76ee\u6a19\u5024\u3001\u8a31\u5bb9\u5dee<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u5dee\u52d5\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u7b49\u3057\u3044\u5927\u304d\u3055\u3067\u6975\u6027\u304c\u53cd\u5bfe\u306e\u4fe1\u53f7\u3092\u99c6\u52d5\u3059\u308b\u4e00\u5bfe\u306e\u914d\u7dda<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4e21\u65b9\u306e\u914d\u7dda\u3001\u30da\u30a2\u9593\u306e\u30a8\u30c3\u30b8\u9593\u9694\u3001\u57fa\u6e96\u69cb\u9020\u3001\u76ee\u6a19\u5024\u3001\u8a31\u5bb9\u5dee<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u6574\u5408<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4fe1\u53f7\u6e90\u3001\u76f8\u4e92\u63a5\u7d9a\u3001\u8ca0\u8377\u306e\u9593\u306e\u95a2\u4fc2<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u30c9\u30e9\u30a4\u30d0\u30fc\u306e\u52d5\u4f5c\u3001\u7dda\u8def\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3001\u8ca0\u8377\u3001\u7d42\u7aef\u65b9\u5f0f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u7d50\u5408\u306b\u3088\u3063\u3066\u5dee\u52d5\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306f\u5909\u5316\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5dee\u52d5\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306f\u3001\u5b64\u7acb\u3057\u305f\u914d\u7dda\u306e\u30b7\u30f3\u30b0\u30eb\u30a8\u30f3\u30c9\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e2\u500d\u306b\u306a\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u30da\u30a2\u306e\u96fb\u754c\u306f\u76f8\u4e92\u306b\u4f5c\u7528\u3057\u3001\u9593\u9694\u306b\u3088\u3063\u3066\u7d50\u679c\u304c\u5909\u308f\u308a\u307e\u3059\u3002\u30bd\u30eb\u30d0\u30fc\u306b\u3088\u3063\u3066\u306f\u3001\u9006\u6975\u6027\u306e\u52b1\u632f\u306b\u5bfe\u3059\u308b\u5947\u30e2\u30fc\u30c9\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3001\u307e\u305f\u306f\u540c\u6975\u6027\u306e\u52b1\u632f\u306b\u5bfe\u3059\u308b\u5076\u30e2\u30fc\u30c9\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u5831\u544a\u3057\u307e\u3059\u3002\u88fd\u9020\u56f3\u9762\u306b\u6570\u5024\u3092\u8ee2\u8a18\u3059\u308b\u524d\u306b\u3001\u3069\u306e\u5024\u304c\u5831\u544a\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u914d\u7dda\u304c\u898f\u683c\u306b\u9069\u5408\u3057\u3066\u3044\u3066\u3082\u3001\u4fe1\u53f7\u304c\u53cd\u5c04\u3059\u308b\u3053\u3068\u304c\u3042\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u5236\u5fa1\u306b\u3088\u3063\u3066\u3001\u88fd\u9020\u3055\u308c\u305f\u7dda\u8def\u306e\u7279\u6027\u3092\u5b9a\u3081\u307e\u3059\u3002\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u6574\u5408\u306f\u3001\u305d\u306e\u7dda\u8def\u3092\u53d6\u308a\u5dfb\u304f\u30b7\u30b9\u30c6\u30e0\u306b\u95a2\u308f\u308a\u307e\u3059\u3002\u914d\u7dda\u304c\u88fd\u9020\u76ee\u6a19\u3092\u6e80\u305f\u3057\u3066\u3044\u3066\u3082\u3001\u4e0d\u9069\u5207\u306a\u7d42\u7aef\u3084\u30b3\u30cd\u30af\u30bf\u30fc\u304c\u3042\u308c\u3070\u3001\u53cd\u5c04\u304c\u751f\u3058\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c6\u30ad\u30b5\u30b9\u30fb\u30a4\u30f3\u30b9\u30c4\u30eb\u30e1\u30f3\u30c4\u306e <a href=\"https:\/\/www.ti.com\/video\/6307564100112\">PCB\u914d\u7dda\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u6574\u5408<\/a> \u3053\u306e\u30ec\u30c3\u30b9\u30f3\u3067\u306f\u3001\u5f62\u72b6\u304c\u914d\u7dda\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u6c7a\u3081\u308b\u4ed5\u7d44\u307f\u3068\u3001\u30c9\u30e9\u30a4\u30d0\u30fc\u3068\u914d\u7dda\u306e\u6574\u5408\u304c\u7acb\u3061\u4e0a\u304c\u308a\u6642\u9593\u3001\u30aa\u30fc\u30d0\u30fc\u30b7\u30e5\u30fc\u30c8\u3001\u30ea\u30f3\u30ae\u30f3\u30b0\u306b\u53ca\u307c\u3059\u5f71\u97ff\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002\u914d\u7dda\u306b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u540d\u79f0\u304c\u4ed8\u3044\u3066\u3044\u308b\u3068\u3044\u3046\u3060\u3051\u3067\u62b5\u6297\u3092\u8ffd\u52a0\u305b\u305a\u3001\u5b9f\u969b\u306e\u30c9\u30e9\u30a4\u30d0\u30fc\u3001\u8ca0\u8377\u3001\u30c8\u30dd\u30ed\u30b8\u30fc\u306b\u57fa\u3065\u3044\u3066\u7d42\u7aef\u65b9\u6cd5\u3092\u9078\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b9\u30bf\u30c3\u30af\u30a2\u30c3\u30d7\u3068\u914d\u7dda\u5f62\u72b6\u304c\u7279\u6027\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u6c7a\u3081\u308b\u4ed5\u7d44\u307f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u914d\u7dda\u5e45\u306f\u3001\u65ad\u9762\u69cb\u9020\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u521d\u3081\u3066\u610f\u5473\u3092\u6301\u3061\u307e\u3059\u3002\u96fb\u754c\u306e\u5f62\u72b6\u3068\u8a98\u96fb\u7279\u6027\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u540c\u3058\u5e45\u3067\u3082\u30b9\u30bf\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u7570\u306a\u308c\u3070\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u5909\u308f\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002Analog Devices\u306e <a href=\"https:\/\/www.analog.com\/en\/resources\/analog-dialogue\/articles\/design-reliable-digital-interfaces.html\">\u9010\u6b21\u6bd4\u8f03\u578bADC\u5411\u3051\u306e\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30c7\u30b8\u30bf\u30eb\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u8a2d\u8a08<\/a> \u3067\u306f\u3001\u4f1d\u9001\u7dda\u8def\u30e2\u30c7\u30eb\u3001\u8a98\u96fb\u7279\u6027\u3001\u5c0e\u4f53\u5bf8\u6cd5\u3001\u9593\u9694\u304c\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u8a08\u7b97\u306e\u5165\u529b\u8981\u7d20\u3068\u3057\u3066\u6319\u3052\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30de\u30a4\u30af\u30ed\u30b9\u30c8\u30ea\u30c3\u30d7\u304a\u3088\u3073\u30b9\u30c8\u30ea\u30c3\u30d7\u30e9\u30a4\u30f3\u306e\u57fa\u6e96\u69cb\u9020<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30de\u30a4\u30af\u30ed\u30b9\u30c8\u30ea\u30c3\u30d7\u306f\u3001\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u306e\u4e0a\u306b\u3042\u308b\u5916\u5c64\u306b\u914d\u7dda\u3055\u308c\u307e\u3059\u3002\u96fb\u754c\u306f\u57fa\u677f\u3068\u5468\u56f2\u306e\u6750\u6599\uff08\u30bd\u30eb\u30c0\u30fc\u30de\u30b9\u30af\u3092\u542b\u3080\uff09\u306b\u5e83\u304c\u308a\u307e\u3059\u3002\u30b9\u30c8\u30ea\u30c3\u30d7\u30e9\u30a4\u30f3\u306f\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u9593\u306e\u57fa\u677f\u5185\u90e8\u306b\u914d\u7dda\u3055\u308c\u3001\u96fb\u754c\u306f\u8a98\u96fb\u4f53\u69cb\u9020\u5185\u306b\u9589\u3058\u8fbc\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"604\" src=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/impedance-cross-sections-1024x604.webp\" alt=\"Controlled impedance PCB cross-sections showing an outer microstrip and an internal stripline between reference planes.\" class=\"wp-image-24264\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/impedance-cross-sections-1024x604.webp 1024w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/impedance-cross-sections-300x177.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/impedance-cross-sections-768x453.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/impedance-cross-sections-18x12.webp 18w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/impedance-cross-sections.webp 1440w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>\u6982\u5ff5\u3092\u793a\u3059\u65ad\u9762\u56f3\u3067\u3042\u308a\u3001\u7e2e\u5c3a\u306f\u4e00\u5b9a\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5b9f\u969b\u306e\u69cb\u9020\u306f\u975e\u5bfe\u79f0\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u3001\u30bd\u30eb\u30c0\u30fc\u30de\u30b9\u30af\u5c64\u306b\u3088\u3063\u3066\u5916\u5c64\u306e\u30e2\u30c7\u30eb\u306f\u5909\u308f\u308a\u307e\u3059\u3002<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u9023\u7d9a\u3057\u305f\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u306f\u3001\u610f\u56f3\u3057\u305f\u30ea\u30bf\u30fc\u30f3\u30d1\u30b9\u69cb\u9020\u3092\u5f62\u6210\u3057\u307e\u3059\u3002\u914d\u7dda\u306e\u4e0b\u3067\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u304c\u5206\u5272\u3055\u308c\u3066\u3044\u305f\u308a\u3001\u6b20\u843d\u3057\u3066\u3044\u305f\u308a\u3059\u308b\u3068\u3001\u305d\u306e\u69cb\u9020\u304c\u5909\u308f\u308a\u307e\u3059\u3002\u4fe1\u53f7\u304c\u5c64\u3092\u5207\u308a\u66ff\u3048\u308b\u7b87\u6240\u3067\u306f\u3001\u30ea\u30bf\u30fc\u30f3\u30d1\u30b9\u306b\u3082\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u4e00\u69d8\u306a\u65ad\u9762\u3092\u7528\u3044\u305f\u8a08\u7b97\u3067\u306f\u3001\u9077\u79fb\u5168\u4f53\u3092\u30e2\u30c7\u30eb\u5316\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6750\u6599\u7279\u6027\u3001\u5b8c\u6210\u5f8c\u306e\u9285\u7b94\u3001\u30de\u30b9\u30af<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u89e3\u6790\u5468\u6ce2\u6570\u306b\u9069\u3057\u305f\u7a4d\u5c64\u69cb\u6210\u3068\u8a98\u96fb\u7279\u6027\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002Dk\u306f\u6750\u6599\u306e\u6bd4\u8a98\u96fb\u7387\u3067\u3001\u8a98\u96fb\u7387\u3068\u3082\u547c\u3070\u308c\u307e\u3059\u3002\u300cFR-4\u300d\u306f\u6750\u6599\u7fa4\u3092\u793a\u3059\u540d\u79f0\u3067\u3042\u308a\u3001\u4e00\u5b9a\u306eDk\u3092\u6307\u3059\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002 <a href=\"https:\/\/lead-pcb.com\/ja\/blog\/pcb-material-guide\/\">PCB\u6750\u6599\u306e\u7279\u6027\u3068\u9078\u5b9a\u30ac\u30a4\u30c9<\/a> \u3067\u306f\u3001\u7a4d\u5c64\u69cb\u6210\u3068\u52d5\u4f5c\u8981\u4ef6\u304c\u91cd\u8981\u3067\u3042\u308b\u7406\u7531\u3092\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sierra Circuits\u306e <a href=\"https:\/\/www.protoexpress.com\/blog\/controlled-impedance-really-matters\/\">\u5236\u5fa1\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u672c\u5f53\u306b\u91cd\u8981\u306a\u7406\u7531<\/a> \u3067\u306f\u3001\u914d\u7dda\u5e45\u3001\u8a98\u96fb\u4f53\u306e\u9593\u9694\u3001Dk\u306e\u5f71\u97ff\u3092\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002\u4ed6\u306e\u5165\u529b\u6761\u4ef6\u3092\u56fa\u5b9a\u3057\u305f\u5834\u5408\u3001\u5f62\u72b6\u3092\u5b9a\u3081\u305f\u3046\u3048\u3067\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u5909\u66f4\u5185\u5bb9<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u4e00\u822c\u7684\u306a\u5f71\u97ff<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u78ba\u8a8d\u4e8b\u9805<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">\u914d\u7dda\u5e45\u3092\u5e83\u3052\u308b<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u7279\u6027\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u4f4e\u4e0b\u3059\u308b<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u30a8\u30c3\u30c1\u30f3\u30b0\u5f8c\u306e\u65ad\u9762\u5f62\u72b6\u3092\u30e2\u30c7\u30eb\u5316\u3059\u308b<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u914d\u7dda\u3068\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u306e\u9593\u9694\u3092\u5e83\u3052\u308b<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u4e0a\u6607\u3059\u308b<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4ed6\u306e\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u3068\u306e\u4f4d\u7f6e\u95a2\u4fc2\u3082\u4e00\u8cab\u3055\u305b\u308b<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u8a98\u96fb\u7387\u3092\u9ad8\u304f\u3059\u308b<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u4f4e\u4e0b\u3059\u308b<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u9069\u5207\u306a\u6750\u6599\u30fb\u7a4d\u5c64\u69cb\u6210\u306e\u30c7\u30fc\u30bf\u3092\u4f7f\u7528\u3059\u308b<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u30da\u30a2\u9593\u9694\u3092\u72ed\u3081\u308b<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4e00\u822c\u306b\u5dee\u52d5\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u4f4e\u4e0b\u3059\u308b<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u7d50\u5408\u306f\u5f62\u72b6\u5168\u4f53\u306b\u5de6\u53f3\u3055\u308c\u308b<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u9285\u7b94\u306e\u539a\u3055\u307e\u305f\u306f\u30de\u30b9\u30af\u3092\u5909\u66f4\u3059\u308b<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u5909\u5316\u3059\u308b<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5b9f\u969b\u306e\u5b8c\u6210\u69cb\u9020\u3092\u30e2\u30c7\u30eb\u306b\u542b\u3081\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3\u307e\u3067\u306e\u8a98\u96fb\u4f53\u306e\u9593\u9694\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u57fa\u677f\u5168\u4f53\u306e\u539a\u3055\u3060\u3051\u3067\u306f\u4e0d\u5341\u5206\u3067\u3059\u3002\u5916\u5c64\u306e\u5c0e\u4f53\u306b\u3064\u3044\u3066\u306f\u3001\u521d\u671f\u9285\u7b94\u3068\u30e1\u30c3\u30ad\u5f8c\u306e\u9285\u539a\u3092\u533a\u5225\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u307e\u305f\u3001\u30a8\u30c3\u30c1\u30f3\u30b0\u306b\u3088\u3063\u3066\u3001\u5358\u7d14\u306a\u8a08\u7b97\u3067\u60f3\u5b9a\u3055\u308c\u308b\u9577\u65b9\u5f62\u3067\u306f\u306a\u304f\u3001\u53f0\u5f62\u306e\u5c0e\u4f53\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u8a08\u7b97\u30c4\u30fc\u30eb\u3067\u63a8\u5b9a\u3067\u304d\u308b\u3053\u3068<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528\u3059\u308b <a href=\"https:\/\/lead-pcb.com\/ja\/tools\/pcb-impedance-calculator\/\">PCB\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u8a08\u7b97\u30c4\u30fc\u30eb<\/a> \u3092\u521d\u671f\u5bf8\u6cd5\u306e\u8a2d\u5b9a\u3084\u611f\u5ea6\u306e\u78ba\u8a8d\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u5f62\u72b6\u3068\u524d\u63d0\u6761\u4ef6\u3092\u8a18\u9332\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u7d4c\u9a13\u5f0f\u306b\u3088\u308b\u63a8\u5b9a\u306f\u3001\u751f\u7523\u7528\u306e\u7a4d\u5c64\u69cb\u6210\u306b\u95a2\u3059\u308b\u88fd\u9020\u696d\u8005\u306e\u78ba\u8a8d\u306b\u4ee3\u308f\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528\u53ef\u80fd\u306a\u6750\u6599\u3001\u30d7\u30ec\u30b9\u5f8c\u306e\u8a98\u96fb\u4f53\u539a\u3001\u5b8c\u6210\u5f8c\u306e\u9285\u539a\u3001\u5b9f\u73fe\u53ef\u80fd\u306a\u5f62\u72b6\u306b\u3064\u3044\u3066\u3001\u88fd\u9020\u696d\u8005\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/lead-pcb.com\/ja\/pcb-manufacturing\/fr-4-pcb\/\">FR-4\u57fa\u677f\u306e\u88fd\u9020\u30da\u30fc\u30b8<\/a> \u3067\u306f\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30ec\u30d3\u30e5\u30fc\u3092\u524d\u63d0\u3068\u3057\u305f\u5236\u5fa1\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3078\u306e\u5bfe\u5fdc\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002\u914d\u7dda\u524d\u306b\u305d\u306e\u7a4d\u5c64\u69cb\u6210\u3092\u78ba\u5b9a\u3057\u3001\u5909\u66f4\u304c\u5fc5\u8981\u306b\u306a\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u914d\u7dda\u5e45\u3092\u524d\u63d0\u3068\u3057\u3066\u3001\u9ad8\u5bc6\u5ea6\u9818\u57df\u306e\u8a2d\u8a08\u3092\u9032\u3081\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5236\u5fa1\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u88fd\u9020\u4ed5\u69d8\u3092\u4f5c\u6210\u3059\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u7528\u7684\u306a\u4ed5\u69d8\u3067\u306f\u3001\u96fb\u6c17\u7684\u8981\u4ef6\u3092\u7279\u5b9a\u53ef\u80fd\u306a\u30cd\u30c3\u30c8\u3068\u7269\u7406\u69cb\u9020\u306b\u7d50\u3073\u4ed8\u3051\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u8981\u4ef6\u3092\u7ba1\u7406\u5bfe\u8c61\u306e\u56f3\u9762\u307e\u305f\u306f\u8868\u306b\u8a18\u8f09\u3057\u3001\u305d\u306e\u7248\u3092\u88fd\u9020\u30c7\u30fc\u30bf\u306e\u7248\u3068\u4e00\u81f4\u3055\u305b\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u8868\u3092\u8a18\u5165\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u306e <strong>\u5f15\u304d\u6e21\u3057\u8a18\u9332\u306e\u5f62\u5f0f\u3092\u793a\u3059\u4eee\u60f3\u4f8b<\/strong>\u3067\u3059\u3002\u5bf8\u6cd5\u306f\u4f8b\u793a\u306e\u305f\u3081\u306b\u8a2d\u5b9a\u3057\u305f\u3082\u306e\u3067\u3001\u8a08\u7b97\u3067\u6c42\u3081\u305f\u5f62\u72b6\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8a18\u8f09\u3055\u308c\u305f\u76ee\u6a19\u5024\u3092\u9054\u6210\u3067\u304d\u308b\u3053\u3068\u3092\u793a\u3059\u3082\u306e\u3067\u3082\u3042\u308a\u307e\u305b\u3093\u3002\u88fd\u9020\u696d\u8005\u304c\u691c\u8a3c\u6e08\u307f\u306e\u7a4d\u5c64\u69cb\u6210\u3092\u63d0\u793a\u3057\u3001\u8a2d\u8a08\u8cac\u4efb\u8005\u304c\u627f\u8a8d\u3059\u308b\u307e\u3067\u306f\u3001\u4e21\u65b9\u306e\u884c\u3092\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u4fdd\u7559\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u9805\u76ee<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u4f8bA<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u4f8bB<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">\u30cd\u30c3\u30c8\u30af\u30e9\u30b9<\/td><td class=\"has-text-align-left\" data-align=\"left\">CTRL_SE<\/td><td class=\"has-text-align-left\" data-align=\"left\">DATA_DIFF<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u4fe1\u53f7\u5c64<\/td><td class=\"has-text-align-left\" data-align=\"left\">L1<\/td><td class=\"has-text-align-left\" data-align=\"left\">L1<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u57fa\u6e96\u30d7\u30ec\u30fc\u30f3<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u9023\u7d9a\u3057\u305fL2\u30b0\u30e9\u30a6\u30f3\u30c9<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u9023\u7d9a\u3057\u305fL2\u30b0\u30e9\u30a6\u30f3\u30c9<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u30e2\u30fc\u30c9\u3068\u76ee\u6a19\u5024<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u30b7\u30f3\u30b0\u30eb\u30a8\u30f3\u30c9\u300150 \u03a9<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5dee\u52d5\u3001100 \u03a9<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u8a31\u5bb9\u5dee<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u00b110%\u3001\u53c2\u8003\u5024<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u00b110%\u3001\u53c2\u8003\u5024<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">CAD\u4e0a\u306e\u914d\u7dda\u5e45<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.150 mm<\/td><td class=\"has-text-align-left\" data-align=\"left\">1\u672c\u3042\u305f\u308a0.150 mm<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u63d0\u6848\u3059\u308b\u4ed5\u4e0a\u304c\u308a\u5e45<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.160 mm\u3001\u672a\u78ba\u8a8d<\/td><td class=\"has-text-align-left\" data-align=\"left\">1\u672c\u3042\u305f\u308a0.160 mm\u3001\u672a\u78ba\u8a8d<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u30da\u30a2\u306e\u5c0e\u4f53\u9593\u9694<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u8a72\u5f53\u306a\u3057<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.150 mm\u3001\u672a\u78ba\u8a8d<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u88fd\u9020\u69cb\u6210\u8a18\u9332<\/td><td class=\"has-text-align-left\" data-align=\"left\">STACK-A\u3001\u30ea\u30d3\u30b8\u30e7\u30f3A\u3002\u63d0\u6848\u304c\u5fc5\u8981<\/td><td class=\"has-text-align-left\" data-align=\"left\">STACK-A\u3001\u30ea\u30d3\u30b8\u30e7\u30f3A\u3002\u63d0\u6848\u304c\u5fc5\u8981<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u5909\u66f4\u306e\u8a31\u53ef<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u66f8\u9762\u306b\u3088\u308b\u627f\u8a8d\u524d\u306e\u5909\u66f4\u306f\u4e0d\u53ef<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u66f8\u9762\u306b\u3088\u308b\u627f\u8a8d\u524d\u306e\u5909\u66f4\u306f\u4e0d\u53ef<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u691c\u8a3c\u4f9d\u983c<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4ee3\u8868\u7684\u306a\u30b7\u30f3\u30b0\u30eb\u30a8\u30f3\u30c9\u30af\u30fc\u30dd\u30f3\u304a\u3088\u3073\u30ec\u30dd\u30fc\u30c8<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4ee3\u8868\u7684\u306a\u5dee\u52d5\u30af\u30fc\u30dd\u30f3\u304a\u3088\u3073\u30ec\u30dd\u30fc\u30c8<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u30ea\u30ea\u30fc\u30b9\u72b6\u6cc1<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4fdd\u7559<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4fdd\u7559<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\uff1a <a href=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/impedance-handoff-template.csv\">\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u5f15\u304d\u7d99\u304e\u7528\u306e\u7a7a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8<\/a> \u304a\u3088\u3073 <a href=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/impedance-handoff-example.csv\">\u8a18\u5165\u4f8b<\/a> \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u5408\u308f\u305b\u3066\u8a18\u9332\u3092\u8abf\u6574\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u88fd\u9020\u69cb\u6210\u8a18\u9332\u306b\u306f\u3001\u30e9\u30df\u30cd\u30fc\u30c8\u6750\uff0f\u30d7\u30ea\u30d7\u30ec\u30b0\u3001\u95a2\u9023\u3059\u308bDk\u3068\u305d\u306e\u6839\u62e0\u3001\u8a98\u96fb\u4f53\u306e\u9593\u9694\u3001\u5b8c\u6210\u5f8c\u306e\u9285\u539a\u3001\u30de\u30b9\u30af\u306b\u95a2\u3059\u308b\u524d\u63d0\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u88fd\u9020\u696d\u8005\u304c\u63d0\u6848\u3059\u308b\u4ed5\u4e0a\u304c\u308a\u5e45\u306f\u3001CAD\u30a2\u30fc\u30c8\u30ef\u30fc\u30af\u4e0a\u306e\u914d\u7dda\u5e45\u3068\u306f\u5206\u3051\u3066\u8a18\u9332\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30cd\u30c3\u30c8\u306b\u8907\u6570\u306e\u5f62\u72b6\u3084\u5c64\u304c\u4f7f\u308f\u308c\u308b\u5834\u5408\u306f\u3001\u914d\u7dda\u8b58\u5225\u5b50\u3082\u8a18\u8f09\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30da\u30a2\u9593\u9694\u3068\u306f\u30012\u672c\u306e\u5c0e\u4f53\u306e <strong>\u7aef\u304b\u3089\u7aef\u307e\u3067\u306e\u8ddd\u96e2<\/strong>\u3092\u6307\u3057\u307e\u3059\u3002\u3053\u306e\u30da\u30a2\u3068\u7121\u95a2\u4fc2\u306a\u9285\u7b94\u3068\u306e\u30af\u30ea\u30a2\u30e9\u30f3\u30b9\u306f\u3001\u5225\u500b\u306e\u914d\u7dda\u5236\u7d04\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u627f\u8a8d\u304c\u5fc5\u8981\u306a\u5909\u66f4\u3092\u53d6\u308a\u6c7a\u3081\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u76ee\u6a19\u3092\u6e80\u305f\u3059\u305f\u3081\u3001\u88fd\u9020\u696d\u8005\u304b\u3089\u914d\u7dda\u5e45\u3001\u9593\u9694\u3001\u307e\u305f\u306f\u8a98\u96fb\u4f53\u306e\u5909\u66f4\u304c\u63d0\u6848\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u88fd\u9020\u524d\u306b\u3001\u8a31\u5bb9\u3059\u308b\u5909\u66f4\u3092\u6c7a\u3081\u3066\u304f\u3060\u3055\u3044\u3002\u914d\u7dda\u5e45\u306e\u5909\u66f4\u306f\u3001\u30d1\u30c3\u30c9\u3078\u306e\u5f15\u304d\u8fbc\u307f\u3084\u914d\u7dda\u30af\u30ea\u30a2\u30e9\u30f3\u30b9\u306b\u5f71\u97ff\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u9593\u9694\u306e\u5909\u66f4\u306f\u3001\u7d50\u5408\u3084\u5229\u7528\u53ef\u80fd\u306a\u914d\u7dda\u9818\u57df\u306b\u5f71\u97ff\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306e\u3088\u3046\u306a\u88fd\u9020\u6307\u793a\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u8981\u4ef6\u306f\u3001\u6307\u5b9a\u3055\u308c\u305f\u30cd\u30c3\u30c8\u30af\u30e9\u30b9\u304a\u3088\u3073\u5c64\uff0f\u57fa\u6e96\u69cb\u9020\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u306e\u307f\u9069\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u88fd\u9020\u524d\u306b\u3001\u88fd\u9020\u7528\u7a4d\u5c64\u69cb\u6210\u3001\u5b8c\u6210\u5f8c\u306e\u5f62\u72b6\u3001\u691c\u8a3c\u8a08\u753b\u3092\u63d0\u51fa\u3057\u3001\u66f8\u9762\u306b\u3088\u308b\u627f\u8a8d\u3092\u5f97\u3066\u304f\u3060\u3055\u3044\u3002\u6750\u6599\u3001\u8a98\u96fb\u4f53\u9593\u9694\u3001\u9285\u7b94\u3001\u57fa\u6e96\u69cb\u9020\u3001\u914d\u7dda\u5e45\u3001\u307e\u305f\u306f\u30da\u30a2\u9593\u9694\u306e\u5909\u66f4\u306f\u3001\u660e\u793a\u7684\u306b\u8a31\u5bb9\u7bc4\u56f2\u304c\u8a18\u9332\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3092\u9664\u304d\u3001\u627f\u8a8d\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306f\u521d\u671f\u6307\u793a\u3067\u3042\u308a\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u88fd\u9020\u5951\u7d04\u306b\u4ee3\u308f\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u627f\u8a8d\u6e08\u307f\u306e\u5024\u304c\u88fd\u9020\u30c7\u30fc\u30bf\u3068\u30af\u30fc\u30dd\u30f3\u306e\u5b9a\u7fa9\u306b\u53cd\u6620\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/lead-pcb.com\/ja\/pcb-manufacturing\/\">PCB\u88fd\u9020\u63d0\u51fa\u8981\u4ef6<\/a> \u306b\u306f\u3001\u30ec\u30d3\u30e5\u30fc\u306b\u5fc5\u8981\u306a\u30ac\u30fc\u30d0\u30fc\u3001\u7a74\u3042\u3051\u3001\u7a4d\u5c64\u69cb\u6210\u3001\u56f3\u9762\u306e\u60c5\u5831\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30af\u30fc\u30dd\u30f3\u3068TDR\u8a66\u9a13\u3067\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u691c\u8a3c\u3059\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6642\u9593\u9818\u57df\u53cd\u5c04\u6e2c\u5b9a\uff08TDR\uff09\u306f\u3001\u96fb\u6c17\u7684\u306a\u30b9\u30c6\u30c3\u30d7\u304b\u3089\u306e\u53cd\u5c04\u3092\u5229\u7528\u3057\u3066\u3001\u69cb\u9020\u306b\u6cbf\u3063\u305f\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u8a55\u4fa1\u3057\u307e\u3059\u3002\u76ee\u6a19\u5024\u3068\u4f75\u305b\u3066\u8a66\u9a13\u65b9\u6cd5\u3068\u5224\u5b9a\u57fa\u6e96\u3092\u5b9a\u3081\u3066\u304f\u3060\u3055\u3044\u3002\u300c100 \u03a9 \u00b110%\u300d\u3060\u3051\u3067\u306f\u3001\u8a66\u9a13\u306e\u5168\u5bb9\u3092\u793a\u305b\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u8a66\u9a13\u30af\u30fc\u30dd\u30f3\u3067\u78ba\u8a8d\u3067\u304d\u308b\u3053\u3068<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30af\u30fc\u30dd\u30f3\u306f\u3001\u88fd\u9020\u30d1\u30cd\u30eb\u306b\u95a2\u9023\u4ed8\u3051\u3089\u308c\u305f\u5c02\u7528\u306e\u8a66\u9a13\u69cb\u9020\u3067\u3059\u3002\u305d\u306e\u6709\u7528\u6027\u306f\u3001\u5bfe\u8c61\u3068\u306a\u308b\u5c64\u3001\u5c0e\u4f53\u5f62\u72b6\u3001\u8a98\u96fb\u4f53\u69cb\u6210\u3001\u57fa\u6e96\u69cb\u9020\u3092\u3069\u308c\u3060\u3051\u4ee3\u8868\u3057\u3066\u3044\u308b\u304b\u306b\u3088\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Polar Instruments\u306e <a href=\"https:\/\/www.polarinstruments.com\/support\/cits\/AP8502.html\">\u8a66\u9a13\u30af\u30fc\u30dd\u30f3\u304a\u3088\u3073\u5185\u8535\u8a66\u9a13\u914d\u7dda\u306b\u95a2\u3059\u308b\u30ac\u30a4\u30c0\u30f3\u30b9<\/a> \u3067\u306f\u3001\u30d3\u30a2\u3001\u5206\u5c90\u3001\u30d7\u30ec\u30fc\u30f3\u306e\u9699\u9593\u3001\u30d7\u30ed\u30fc\u30d6\u306e\u30a2\u30af\u30bb\u30b9\u6027\u306a\u3069\u306b\u3088\u308a\u3001\u5b9f\u57fa\u677f\u3067\u306e\u6e2c\u5b9a\u304c\u8907\u96d1\u306b\u306a\u308b\u7406\u7531\u3092\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u4ee3\u8868\u6027\u306e\u3042\u308b\u30af\u30fc\u30dd\u30f3\u69cb\u9020\u304c\u5fc5\u8981\u3067\u3042\u308b\u3053\u3068\u3082\u5f37\u8abf\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/coupon-verification-scope-1024x576.webp\" alt=\"A production panel contains routed boards and a separate representative impedance coupon that connects to the TDR test instrument.\" class=\"wp-image-24263\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/coupon-verification-scope-1024x576.webp 1024w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/coupon-verification-scope-300x169.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/coupon-verification-scope-768x432.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/coupon-verification-scope-18x10.webp 18w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/coupon-verification-scope.webp 1440w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>\u30af\u30fc\u30dd\u30f3\u306f\u3001\u6307\u5b9a\u3055\u308c\u305f\u88fd\u9020\u69cb\u9020\u3092\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3057\u307e\u3059\u3002\u57fa\u677f\u4e0a\u306e\u914d\u7dda\u3001\u30d3\u30a2\u3001\u30b3\u30cd\u30af\u30bf\u3001\u304a\u3088\u3073\u30b7\u30b9\u30c6\u30e0\u6027\u80fd\u306b\u306f\u3001\u305d\u308c\u305e\u308c\u72ec\u81ea\u306e\u691c\u8a3c\u304c\u5fc5\u8981\u3067\u3059\u3002<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3057\u305f\u304c\u3063\u3066\u3001\u30af\u30fc\u30dd\u30f3\u306e\u6e2c\u5b9a\u7d50\u679c\u306f\u3001\u5b9a\u7fa9\u3055\u308c\u305f\u88fd\u9020\u691c\u67fb\u306e\u88cf\u4ed8\u3051\u3068\u306a\u308a\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u57fa\u677f\u4e0a\u306e\u3059\u3079\u3066\u306e\u30cd\u30c3\u30c8\u3092\u76f4\u63a5\u6e2c\u5b9a\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30af\u30fc\u30dd\u30f3\u304c\u5408\u683c\u3057\u3066\u3082\u3001\u30b3\u30cd\u30af\u30bf\u3084\u5c64\u9593\u9077\u79fb\u90e8\u306e\u4e0d\u9023\u7d9a\u304c\u8a31\u5bb9\u7bc4\u56f2\u5185\u3067\u3042\u308b\u3053\u3068\u306f\u8a3c\u660e\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u5b9a\u65b9\u6cd5\u3068\u5408\u5426\u5224\u5b9a\u57fa\u6e96\u3092\u5b9a\u3081\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u767a\u6ce8\u524d\u306b\u3001\u6b21\u306e\u8a73\u7d30\u3092\u53d6\u308a\u6c7a\u3081\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30af\u30fc\u30dd\u30f3\u8b58\u5225\u5b50\u3001\u4ee3\u8868\u3059\u308b\u5c64\u3068\u5f62\u72b6\u3001\u30d1\u30cd\u30eb\uff0f\u30ed\u30c3\u30c8\u306e\u30c8\u30ec\u30fc\u30b5\u30d3\u30ea\u30c6\u30a3\u3002<\/li>\n\n\n\n<li>\u8a72\u5f53\u3059\u308b\u5834\u5408\u306e\u6821\u6b63\u3001\u30d7\u30ed\u30fc\u30d6\uff0f\u6cbb\u5177\u306e\u914d\u7f6e\u3001\u304a\u3088\u3073\u5dee\u52d5\u6e2c\u5b9a\u306e\u8a2d\u5b9a\u3002<\/li>\n\n\n\n<li>\u4f9b\u7d66\u3055\u308c\u308b\u30c6\u30b9\u30c8\u30a8\u30c3\u30b8\u3001\u4f7f\u7528\u53ef\u80fd\u306a\u6e2c\u5b9a\u30a6\u30a3\u30f3\u30c9\u30a6\u3001\u304a\u3088\u3073\u7acb\u3061\u4e0a\u304c\u308a\uff0f\u7d42\u4e86\u90e8\u306e\u5f71\u97ff\u306e\u6271\u3044\u3002<\/li>\n\n\n\n<li>\u5831\u544a\u3059\u308b\u7d71\u8a08\u91cf\u3001\u5408\u5426\u5224\u5b9a\u9650\u754c\u3001\u304a\u3088\u3073\u6e2c\u5b9a\u4e0d\u78ba\u304b\u3055\u306e\u6271\u3044\u3002<\/li>\n\n\n\n<li>\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u8a08\u753b\u3001\u30ec\u30dd\u30fc\u30c8\u306e\u5185\u5bb9\u3001\u304a\u3088\u3073\u4e0d\u5408\u683c\u307e\u305f\u306f\u5224\u5b9a\u304c\u66d6\u6627\u306a\u7d50\u679c\u306e\u51e6\u7f6e\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tektronix\u306e <a href=\"https:\/\/www.tek.com\/en\/documents\/primer\/tdr-test\">TDR\u30c6\u30b9\u30c8<\/a> \u3067\u306f\u3001\u6e2c\u5b9a\u5e2f\u57df\u5e45\u3068\u76f8\u4e92\u63a5\u7d9a\u304c\u4f9b\u7d66\u3055\u308c\u308b\u7acb\u3061\u4e0a\u304c\u308a\u6642\u9593\u306b\u53ca\u307c\u3059\u5f71\u97ff\u3001\u304a\u3088\u3073\u8907\u96d1\u306a\u69cb\u9020\u306b\u304a\u3051\u308b\u591a\u91cd\u53cd\u5c04\u304c\u898b\u304b\u3051\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u3069\u306e\u3088\u3046\u306b\u6b6a\u307e\u305b\u308b\u304b\u3092\u8aac\u660e\u3057\u307e\u3059\u3002\u88c5\u7f6e\u306e\u8a2d\u5b9a\u3092\u9ad8\u901f\u306b\u3057\u305f\u3060\u3051\u3067\u306f\u3001\u30af\u30fc\u30dd\u30f3\u3067\u306e\u5206\u89e3\u80fd\u304c\u78ba\u4fdd\u3055\u308c\u305f\u3053\u3068\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8a08\u7b97\u4f8b\uff1a\u5dee\u52d5\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u8981\u4ef6\u304c100 \u03a9\u306e\u5834\u5408<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9867\u5ba2\u3068\u57fa\u677f\u88fd\u9020\u696d\u8005\u304c\u6b21\u306e\u6761\u4ef6\u306b\u5408\u610f\u3057\u305f\u3068\u3057\u307e\u3059\u3002 <strong>\u5dee\u52d5\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9100 \u03a9\u3001\u8a31\u5bb9\u5dee\u00b110%<\/strong>\u3002\u6570\u5024\u4e0a\u306e\u9650\u754c\u5024\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4e0b\u9650\u5024 = 100 \u00d7 0.90 = 90 \u03a9\u3002\u4e0a\u9650\u5024 = 100 \u00d7 1.10 = 110 \u03a9\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a08\u7b97\u4f8b\u3067\u306f\u3001\u627f\u8a8d\u6e08\u307f\u306e\u6e2c\u5b9a\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u4f7f\u7528\u3057\u3001\u5831\u544a\u5024\u3092\u30ac\u30fc\u30c9\u30d0\u30f3\u30c9\u306a\u3057\u3067\u5305\u542b\u9650\u754c\u5024\u3068\u76f4\u63a5\u6bd4\u8f03\u3059\u308b\u3068\u4eee\u5b9a\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u5224\u65ad\u30eb\u30fc\u30eb\u306e\u4f8b\u793a\u3067\u3042\u308a\u3001\u3042\u3089\u3086\u308b\u5834\u5408\u306b\u63a8\u5968\u3055\u308c\u308b\u4e0d\u78ba\u304b\u3055\u306e\u53d6\u308a\u6271\u3044\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u5831\u544a\u5024\u306e\u4f8b<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u3053\u306e\u30eb\u30fc\u30eb\u306b\u57fa\u3065\u304f\u5224\u5b9a<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u6b21\u306e\u5bfe\u5fdc<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">103 \u03a9<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6570\u5024\u57fa\u6e96\u306b\u5408\u683c<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5408\u610f\u6e08\u307f\u306e\u691c\u67fb\u8a18\u9332\u3068\u3068\u3082\u306b\u3001\u30c8\u30ec\u30fc\u30b5\u30d6\u30eb\u306a\u7d50\u679c\u3092\u4fdd\u7ba1\u3059\u308b<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">112 \u03a9<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6570\u5024\u57fa\u6e96\u306b\u4e0d\u5408\u683c<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5408\u610f\u6e08\u307f\u306e\u51e6\u7f6e\u624b\u9806\u306b\u5f93\u3063\u3066\u3001\u53d7\u3051\u5165\u308c\u3092\u4fdd\u7559\u3057\u3001\u539f\u56e0\u3092\u8abf\u67fb\u3059\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306f\u67b6\u7a7a\u306e\u6570\u5024\u3067\u3042\u308a\u3001\u5b9f\u969b\u306e\u88fd\u9020\u7d50\u679c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5b9f\u969b\u306e\u6ce8\u6587\u3067\u306f\u3001\u9867\u5ba2\u306e\u8a31\u5bb9\u5dee\u3068\u5408\u610f\u6e08\u307f\u306e\u6e2c\u5b9a\u624b\u9806\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4e0d\u78ba\u304b\u3055\u3092\u8003\u616e\u3057\u3066\u30ac\u30fc\u30c9\u30d0\u30f3\u30c9\u307e\u305f\u306f\u5224\u5b9a\u4fdd\u7559\u306e\u533a\u5206\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u3053\u306e\u7c21\u7565\u5316\u3057\u305f\u30eb\u30fc\u30eb\u3067\u306f\u306a\u304f\u3001\u305d\u306e\u65b9\u91dd\u3092\u9069\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30d7\u30ed\u30fc\u30d6\u306e\u7acb\u3061\u4e0a\u304c\u308a\u90e8\u4ed8\u8fd1\u306e\u4efb\u610f\u306e\u6e2c\u5b9a\u70b9\u3092\u6839\u62e0\u306b\u3001\u30af\u30fc\u30dd\u30f3\u306e\u5408\u5426\u3092\u5224\u5b9a\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8a08\u7b97\u4e0a\u306e\u8a2d\u8a08\u5024\u304c\u76ee\u6a19\u304b\u3089\u5916\u308c\u308b\u4e00\u822c\u7684\u306a\u539f\u56e0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e2\u30c7\u30eb\u3068\u6e2c\u5b9a\u7d50\u679c\u304c\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\u306f\u3001\u30a2\u30fc\u30c8\u30ef\u30fc\u30af\u3092\u5909\u66f4\u3059\u308b\u524d\u306b\u3001\u5165\u529b\u6761\u4ef6\u3068\u69cb\u9020\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u516c\u79f0\u5024\u306b\u3088\u308b\u8a08\u7b97\u3001\u627f\u8a8d\u6e08\u307f\u306e\u88fd\u9020\u30e2\u30c7\u30eb\u3001\u304a\u3088\u3073\u6e2c\u5b9a\u6e08\u307f\u306e\u30af\u30fc\u30dd\u30f3\u3067\u306f\u3001\u65ad\u9762\u69cb\u9020\u304c\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u8003\u3048\u3089\u308c\u308b\u539f\u56e0<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u78ba\u8a8d\u4e8b\u9805<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u4e88\u9632\u7b56<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">\u4e00\u822c\u7684\u306a\u6750\u6599\u30c7\u30fc\u30bf<\/td><td class=\"has-text-align-left\" data-align=\"left\">Dk\u3001\u5468\u6ce2\u6570\u306e\u57fa\u6e96\u3001\u304a\u3088\u3073\u7a4d\u5c64\u677f\u306e\u69cb\u6210<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u30e2\u30c7\u30eb\u306b\u4f7f\u7528\u3059\u308b\u6750\u6599\u8a18\u9332\u306b\u5408\u610f\u3059\u308b<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u9285\u306e\u524d\u63d0\u6761\u4ef6\u304c\u8aa4\u3063\u3066\u3044\u308b<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u958b\u59cb\u6642\u306e\u7b94\u539a\u3068\u4ed5\u4e0a\u304c\u308a\u9285\u539a\u3001\u304a\u3088\u3073\u30a8\u30c3\u30c1\u30f3\u30b0\u5f62\u72b6<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u88fd\u9020\u5f8c\u306e\u5c0e\u4f53\u5f62\u72b6\u3092\u30e2\u30c7\u30eb\u5316\u3059\u308b<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u8a98\u96fb\u4f53\u9593\u9694\u306e\u5909\u5316<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u30d7\u30ec\u30b9\u5f8c\u306e\u539a\u3055\u3068\u57fa\u6e96\u9762\u306e\u5272\u308a\u5f53\u3066<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6700\u7d42\u7248\u306e\u7a4d\u5c64\u69cb\u6210\u3092\u78ba\u8a8d\u3059\u308b<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u5f62\u72b6\u30e2\u30c7\u30eb\u304c\u8aa4\u3063\u3066\u3044\u308b<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5916\u5c64\uff0f\u5185\u5c64\u3001\u5bfe\u79f0\u6027\u3001\u30bd\u30eb\u30c0\u30fc\u30de\u30b9\u30af\u3001\u304a\u3088\u3073\u30da\u30a2\u306e\u914d\u7f6e<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5b9f\u969b\u306e\u65ad\u9762\u306b\u30e2\u30c7\u30eb\u3092\u5408\u308f\u305b\u308b<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u30da\u30a2\u9593\u9694\u306e\u5909\u5316<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4ed5\u4e0a\u304c\u308a\u6642\u306e\u30a8\u30c3\u30b8\u9593\u9694\u3068\u914d\u7dda\u4e0a\u306e\u4f8b\u5916<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u30ea\u30ea\u30fc\u30b9\u6642\u306b\u7dda\u5e45\u3068\u9593\u9694\u306e\u4e21\u65b9\u3092\u7ba1\u7406\u3059\u308b<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u672a\u627f\u8a8d\u306e\u4ee3\u66ff\u54c1\u4f7f\u7528<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6750\u6599\u304a\u3088\u3073\u5de5\u7a0b\u306e\u5909\u66f4<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6587\u66f8\u5316\u3055\u308c\u305f\u627f\u8a8d\u3092\u5fc5\u9808\u3068\u3059\u308b<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u8aa4\u89e3\u3092\u62db\u304f\u30c6\u30b9\u30c8\u9818\u57df<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u7acb\u3061\u4e0a\u304c\u308a\u90e8\u306e\u5f71\u97ff\u3001\u7d42\u7aef\u53cd\u5c04\u3001\u307e\u305f\u306f\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306e\u8aa4\u308a<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5408\u610f\u6e08\u307f\u306e\u65b9\u6cd5\u3068\u6709\u52b9\u306a\u6e2c\u5b9a\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u4f7f\u7528\u3059\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5de5\u7a0b\u306e\u691c\u8a3c\u3068\u30c1\u30e3\u30cd\u30eb\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306f\u5206\u3051\u3066\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u30af\u30fc\u30dd\u30f3\u304c\u5408\u683c\u3057\u3066\u3044\u308b\u306e\u306b\u30ea\u30f3\u30af\u304c\u4e0d\u5408\u683c\u3068\u306a\u308b\u5834\u5408\u306f\u3001\u5b9f\u969b\u306e\u914d\u7dda\u3001\u30ea\u30bf\u30fc\u30f3\u30d1\u30b9\u3001\u9077\u79fb\u90e8\u3001\u7d42\u7aef\u3001\u304a\u3088\u3073\u30b3\u30cd\u30af\u30bf\u306e\u52d5\u4f5c\u3092\u8abf\u3079\u3066\u304f\u3060\u3055\u3044\u3002\u3059\u3079\u3066\u306e\u914d\u7dda\u5e45\u3092\u5909\u66f4\u3059\u308b\u3068\u3001\u5143\u306e\u554f\u984c\u304c\u898b\u3048\u306b\u304f\u304f\u306a\u308a\u3001\u65b0\u305f\u306a\u4e0d\u6574\u5408\u304c\u751f\u3058\u308b\u304a\u305d\u308c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5236\u5fa1\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306b\u95a2\u3059\u308b\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5236\u5fa1\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3068\u8a98\u96fb\u4f53\u5236\u5fa1\u306f\u540c\u3058\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3044\u3044\u3048\u3002\u8a98\u96fb\u4f53\u5236\u5fa1\u3067\u306f\u3001\u8a98\u96fb\u4f53\u306e\u69cb\u6210\u3084\u9593\u9694\u306b\u95a2\u3059\u308b\u8981\u7d20\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u5236\u5fa1\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3067\u306f\u3001\u5b9a\u7fa9\u3055\u308c\u305f\u5c0e\u4f53\uff0f\u57fa\u6e96\u69cb\u9020\u306b\u5bfe\u3059\u308b\u96fb\u6c17\u7684\u306a\u76ee\u6a19\u5024\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u8a98\u96fb\u4f53\u3092\u5236\u5fa1\u3059\u308b\u3068\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u4e88\u6e2c\u6027\u306f\u9ad8\u307e\u308a\u307e\u3059\u304c\u3001\u914d\u7dda\u5e45\u3001\u9285\u7b94\u3001\u6750\u6599\u7279\u6027\u3001\u30bd\u30eb\u30c0\u30fc\u30de\u30b9\u30af\u3001\u30da\u30a2\u9593\u7d50\u5408\u3082\u5f71\u97ff\u3057\u307e\u3059\u3002\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u304c\u3069\u306e\u7d50\u679c\u3092\u9054\u6210\u3057\u3001\u691c\u8a3c\u3059\u3079\u304d\u304b\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 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class=\"wp-block-paragraph\">\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30ec\u30d3\u30e5\u30fc\u306b\u3064\u3044\u3066\u306f\u3001 <a href=\"https:\/\/lead-pcb.com\/ja\/contact-us\/\">\u30b9\u30bf\u30c3\u30af\u30a2\u30c3\u30d7\u3068\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u8981\u4ef6\u3092\u63d0\u51fa\u3057<\/a>\u30e1\u30fc\u30ab\u30fc\u306b\u78ba\u8a8d\u3057\u3066\u3082\u3089\u3046\u5fc5\u8981\u306e\u3042\u308b\u691c\u8a3c\u8a08\u753b\u3082\u542b\u3081\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Controlled impedance is the practice of designing and manufacturing PCB traces so their characteristic impedance meets a specified target and tolerance. The result depends on the conductor geometry, dielectric construction, and reference planes. A complete requirement also states how the manufacturer will verify the finished structure. A note that says only \u201c50 ohms\u201d leaves important decisions open. Which nets and layers does it cover? Is the target single-ended or differential? May the fabricator change trace width? What constitutes a passing measurement? Those decisions connect the circuit design to the production order. Agree them before releasing the board. When does a PCB trace need impedance control? Use PCB impedance control when [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":24265,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"Controlled Impedance PCB Design: Stackup, Specifications and Testing","_seopress_titles_desc":"Learn controlled impedance PCB design, stackup choices, fabrication notes, and TDR acceptance checks. 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