{"id":23560,"date":"2026-09-11T10:41:55","date_gmt":"2026-09-11T10:41:55","guid":{"rendered":"https:\/\/lead-pcb.com\/?p=23560"},"modified":"2026-10-21T07:57:25","modified_gmt":"2026-10-21T07:57:25","slug":"through-hole","status":"publish","type":"post","link":"https:\/\/lead-pcb.com\/ja\/blog\/through-hole\/","title":{"rendered":"\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u3068\u306f\uff1fPCB\u306e\u7a2e\u985e\u3001\u7528\u9014\u3001\u8a2d\u8a08\u30ac\u30a4\u30c9"},"content":{"rendered":"<p class=\"wp-block-paragraph\">A <strong>\u30b9\u30eb\u30fc\u30db\u30fc\u30eb<\/strong> \u306f\u3001\u30d7\u30ea\u30f3\u30c8\u57fa\u677f\uff08PCB\uff09\u306e\u7247\u9762\u304b\u3089\u53cd\u5bfe\u9762\u307e\u3067\u5b8c\u5168\u306b\u8cab\u901a\u3059\u308b\u7a74\u3067\u3059\u3002\u5c0e\u96fb\u6027\u306e\u9285\u3067\u3081\u3063\u304d\u3057\u3066\u96fb\u6c17\u7684\u63a5\u7d9a\u3092\u4f5c\u308b\u3053\u3068\u3082\u3001\u6a5f\u68b0\u7684\u7528\u9014\u306e\u305f\u3081\u306b\u3081\u3063\u304d\u3092\u65bd\u3055\u306a\u3044\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306f\u3001\u90e8\u54c1\u30ea\u30fc\u30c9\u3001\u30b3\u30cd\u30af\u30bf\u3001\u30d3\u30a2\u3001\u53d6\u308a\u4ed8\u3051\u91d1\u5177\u3001\u4f4d\u7f6e\u6c7a\u3081\u30d4\u30f3\u3001\u30b9\u30ed\u30c3\u30c8\u306a\u3069\u306b\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u7528\u8a9e\u306f\u3001\u7269\u7406\u7684\u306a\u7a74\u3001\u3081\u3063\u304d\u3055\u308c\u305f\u96fb\u6c17\u7684\u306a\u69cb\u9020\u3001\u307e\u305f\u306f\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u6280\u8853\uff08THT\uff09\u3068\u547c\u3070\u308c\u308b\u90e8\u54c1\u5b9f\u88c5\u65b9\u6cd5\u3092\u6307\u3059\u3053\u3068\u304c\u3042\u308a\u3001\u6df7\u540c\u3055\u308c\u3084\u3059\u3044\u3082\u306e\u3067\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3068\u3001\u8a2d\u8a08\u8005\u306f\u6b63\u78ba\u306a\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u3092\u4f5c\u6210\u3057\u3001\u88fd\u9020\u4e0a\u306e\u8aa4\u308a\u3092\u9632\u304e\u3001\u9069\u5207\u306a\u5b9f\u88c5\u65b9\u6cd5\u3092\u9078\u3079\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\"><strong>\u8981\u70b9<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306f\u3001PCB\u306e\u539a\u307f\u5168\u4f53\u3092\u8cab\u901a\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\uff08PTH\uff09\u306b\u306f\u5c0e\u96fb\u6027\u306e\u30d0\u30ec\u30eb\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u975e\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\uff08NPTH\uff09\u306b\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n\n\n\n<li>\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u90e8\u54c1\u306f\u3001\u30ea\u30fc\u30c9\u3092PCB\u306e\u7a74\u306b\u633f\u5165\u3057\u3001\u306f\u3093\u3060\u4ed8\u3051\u307e\u305f\u306f\u5727\u5165\u3057\u3066\u53d6\u308a\u4ed8\u3051\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30b9\u30eb\u30fc\u30d3\u30a2\u3082\u57fa\u677f\u3092\u8cab\u901a\u3057\u307e\u3059\u304c\u3001\u4e3b\u306a\u76ee\u7684\u306f\u90e8\u54c1\u30ea\u30fc\u30c9\u3092\u4fdd\u6301\u3059\u308b\u3053\u3068\u3067\u306f\u306a\u304f\u3001\u9285\u5c64\u540c\u58eb\u3092\u63a5\u7d9a\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/li>\n\n\n\n<li>\u7a74\u5f84\u3001\u30e9\u30f3\u30c9\u5e45\u3001\u30a2\u30b9\u30da\u30af\u30c8\u6bd4\u3001\u516c\u5dee\u3001\u3081\u3063\u304d\u8981\u4ef6\u306b\u3064\u3044\u3066\u3001PCB\u30e1\u30fc\u30ab\u30fc\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">PCB\u8a2d\u8a08\u306b\u304a\u3051\u308b\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u3068\u306f\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u306f <a href=\"https:\/\/lead-pcb.com\/ja\/pcb-manufacturing\/\" data-type=\"page\" data-id=\"33\">PCB\u8a2d\u8a08<\/a>\u3001\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u3068\u306f\u3001\u57fa\u677f\u306e\u539a\u307f\u5168\u4f53\u3092\u8cab\u901a\u3059\u308b\u3001\u30c9\u30ea\u30eb\u52a0\u5de5\u307e\u305f\u306f\u30eb\u30fc\u30bf\u30fc\u52a0\u5de5\u306b\u3088\u308b\u958b\u53e3\u90e8\u3067\u3059\u3002\u305d\u306e\u69cb\u9020\u3068\u7528\u9014\u306b\u3088\u3063\u3066\u3001\u4fe1\u53f7\u3092\u4f1d\u3048\u308b\u306e\u304b\u3001\u90e8\u54c1\u30d4\u30f3\u3092\u633f\u5165\u3059\u308b\u306e\u304b\u3001\u91d1\u5177\u3092\u652f\u3048\u308b\u306e\u304b\u3001\u5358\u306b\u30af\u30ea\u30a2\u30e9\u30f3\u30b9\u3092\u78ba\u4fdd\u3059\u308b\u306e\u304b\u304c\u6c7a\u307e\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306a\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306e\u69cb\u9020\u306b\u306f\u3001\u6b21\u306e\u3082\u306e\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PCB\u306e\u57fa\u6750\u3092\u8cab\u901a\u3059\u308b\u4ed5\u4e0a\u304c\u308a\u7a74<\/li>\n\n\n\n<li>\u7a74\u306e\u58c1\u9762\u306b\u65bd\u3055\u308c\u305f\u9285\u3081\u3063\u304d\u3002\u3053\u308c\u306f <strong>\u30d0\u30ec\u30eb<\/strong><\/li>\n\n\n\n<li>\u9078\u629e\u3057\u305f\u5c64\u3067\u7a74\u306e\u5468\u56f2\u306b\u8a2d\u3051\u3089\u308c\u308b\u9285\u30d1\u30c3\u30c9\uff08\u30e9\u30f3\u30c9\uff09<\/li>\n\n\n\n<li>HDI PCB\u3068\u306f <strong>\u30a2\u30cb\u30e5\u30e9\u30ea\u30f3\u30b0<\/strong>\u3002\u7a74\u306e\u7e01\u3068\u30d1\u30c3\u30c9\u306e\u7e01\u306e\u9593\u306b\u898b\u3048\u308b\u9285\u306e\u5e45\u3067\u3059<\/li>\n\n\n\n<li>\u7a74\u3092\u9285\u30d7\u30ec\u30fc\u30f3\u306b\u63a5\u7d9a\u305b\u305a\u306b\u8cab\u901a\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308b\u7b87\u6240\u306e\u30af\u30ea\u30a2\u30e9\u30f3\u30b9\u3002\u591a\u304f\u306e\u5834\u5408\u3001\u30a2\u30f3\u30c1\u30d1\u30c3\u30c9\u3068\u547c\u3070\u308c\u307e\u3059<\/li>\n\n\n\n<li>\u306f\u3093\u3060\u4ed8\u3051\u304c\u5fc5\u8981\u306a\u5834\u5408\u306b\u3001\u57fa\u677f\u8868\u9762\u306e\u7247\u9762\u307e\u305f\u306f\u4e21\u9762\u306b\u8a2d\u3051\u308b\u30bd\u30eb\u30c0\u30fc\u30de\u30b9\u30af\u958b\u53e3\u90e8<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/cross-section-diagram-of-a-plated-through-hole.webp\" alt=\"Cross-section diagram of a plated through hole (PTH) in a multilayer PCB showing copper barrel and annular ring\" class=\"wp-image-23562\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/cross-section-diagram-of-a-plated-through-hole.webp 1000w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/cross-section-diagram-of-a-plated-through-hole-300x225.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/cross-section-diagram-of-a-plated-through-hole-768x576.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/cross-section-diagram-of-a-plated-through-hole-16x12.webp 16w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u96fb\u6c17\u7684\u306a\u7a74\u3068\u6a5f\u68b0\u7684\u306a\u7a74\u306e\u9055\u3044\u306f\u57fa\u672c\u7684\u306a\u4e8b\u9805\u3067\u3059\u3002\u73fe\u5728\u306e <a href=\"https:\/\/docs.kicad.org\/10.0\/en\/pcbnew\/pcbnew.html\">KiCad PCB\u30a8\u30c7\u30a3\u30bf\u30fc\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3067\u306f<\/a> \u3001\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u30d1\u30c3\u30c9\u306f\u96fb\u6c17\u7684\u306b\u63a5\u7d9a\u3055\u308c\u3001\u3081\u3063\u304d\u3055\u308c\u3066\u3044\u308b\u4e00\u65b9\u3001NPTH\u306e\u6a5f\u68b0\u7528\u30d1\u30c3\u30c9\u306b\u306f\u96fb\u6c17\u7684\u63a5\u7d9a\u304c\u306a\u3044\u3068\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u3068\u975e\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306e\u9055\u3044<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PCB\u306e\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306b\u306f\u3001\u4e3b\u306bPTH\u3068NPTH\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u7279\u5fb4<\/th><th>\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\uff08PTH\uff09<\/th><th>\u975e\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\uff08NPTH\uff09<\/th><\/tr><tr><td>\u7a74\u58c1\u9762\u306e\u4ed5\u4e0a\u3052<\/td><td>\u5c0e\u96fb\u6027\u9285\u3081\u3063\u304d<\/td><td>\u5c0e\u96fb\u6027\u3081\u3063\u304d\u306a\u3057<\/td><\/tr><tr><td>\u96fb\u6c17\u7684\u6a5f\u80fd<\/td><td>\u90e8\u54c1\u30ea\u30fc\u30c9\u307e\u305f\u306f\u8907\u6570\u306e\u9285\u5c64\u3092\u63a5\u7d9a\u3067\u304d\u308b<\/td><td>\u901a\u5e38\u306f\u306a\u3057<\/td><\/tr><tr><td>\u4e00\u822c\u7684\u306a\u7528\u9014<\/td><td>\u90e8\u54c1\u30ea\u30fc\u30c9\u3001\u30b3\u30cd\u30af\u30bf\u3001\u5727\u5165\u30d4\u30f3\u3001\u30b9\u30eb\u30fc\u30d3\u30a2<\/td><td>\u306d\u3058\u3001\u6cbb\u5177\u30d4\u30f3\u3001\u4f4d\u7f6e\u6c7a\u3081\u7528\u5f62\u72b6\u3001\u6a5f\u68b0\u7684\u30af\u30ea\u30a2\u30e9\u30f3\u30b9<\/td><\/tr><tr><td>\u9285\u30d1\u30c3\u30c9<\/td><td>\u901a\u5e38\u3001\u5fc5\u8981\u306a\u5c64\u306b\u5b58\u5728\u3059\u308b<\/td><td>\u901a\u5e38\u306f\u5b58\u5728\u305b\u305a\u3001\u7d76\u7e01\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u9285\u7b94\u7981\u6b62\u9818\u57df\u3092\u8a2d\u3051\u308b<\/td><\/tr><tr><td>\u88fd\u9020\u30c7\u30fc\u30bf<\/td><td>\u3081\u3063\u304d\u3042\u308a\u3068\u3057\u3066\u8b58\u5225\u3055\u308c\u308b<\/td><td>\u3081\u3063\u304d\u306a\u3057\u3068\u3057\u3066\u8b58\u5225\u3055\u308c\u308b<\/td><\/tr><tr><td>\u4e3b\u306a\u30ea\u30b9\u30af<\/td><td>\u30d0\u30ec\u30eb\u306e\u6b20\u9665\u3001\u74b0\u72b6\u30ea\u30f3\u30b0\u5e45\u306e\u4e0d\u8db3\u3001\u306f\u3093\u3060\u5145\u586b\u4e0d\u826f<\/td><td>\u610f\u56f3\u3057\u306a\u3044\u9285\u7b94\u306e\u9732\u51fa\u3001\u307e\u305f\u306f\u8aa4\u3063\u305f\u88fd\u9020\u533a\u5206<\/td><\/tr><\/tbody><\/table><\/figure>\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\/pth-and-npth-visual-comparison-1024x576.webp\" alt=\"Visual comparison between a plated through hole (PTH) with copper ring and a non-plated through hole (NPTH) mechanical mounting hole\" class=\"wp-image-23564\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/pth-and-npth-visual-comparison-1024x576.webp 1024w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/pth-and-npth-visual-comparison-300x169.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/pth-and-npth-visual-comparison-768x432.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/pth-and-npth-visual-comparison-1536x864.webp 1536w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/pth-and-npth-visual-comparison-18x10.webp 18w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/pth-and-npth-visual-comparison.webp 1672w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">\u5c0e\u96fb\u6027\u306e\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\uff08\u5de6\uff09\u3068\u3001\u53d6\u308a\u4ed8\u3051\u306b\u4f7f\u7528\u3059\u308b\u7d76\u7e01\u3055\u308c\u305f\u975e\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\uff08\u53f3\uff09\u306e\u4e26\u5217\u6bd4\u8f03<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u3068\u306f\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb<\/strong> \u306f\u3001\u5185\u58c1\u306b\u9285\u304c\u6790\u51fa\u30fb\u3081\u3063\u304d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u9285\u88fd\u306e\u30d0\u30ec\u30eb\u306b\u3088\u308a\u3001\u5916\u5c64\u3084\u5185\u5c64\u3001\u307e\u305f\u306f\u305d\u306e\u4e21\u65b9\u306b\u3042\u308b\u30d1\u30c3\u30c9\u3084\u914d\u7dda\u3092\u63a5\u7d9a\u3067\u304d\u307e\u3059\u3002\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u90e8\u54c1\u306b\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u30ea\u30fc\u30c9\u3092\u7a74\u306b\u633f\u5165\u3057\u3001\u306f\u3093\u3060\u3067\u30d0\u30ec\u30eb\u3068\u30d1\u30c3\u30c9\u306b\u63a5\u5408\u3057\u307e\u3059\u3002\u4e00\u90e8\u306ePTH\u306f\u3001\u306f\u3093\u3060\u3092\u4f7f\u308f\u306a\u3044\u5727\u5165\u63a5\u70b9\u5411\u3051\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PTH\u306f\u3001\u7a74\u306b\u96fb\u6c17\u7684\u5c0e\u901a\u3092\u6301\u305f\u305b\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3084\u3001\u96fb\u6c17\u7684\u30fb\u6a5f\u68b0\u7684\u63a5\u5408\u306e\u4e00\u90e8\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u5834\u5408\u306b\u7528\u3044\u3089\u308c\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u4f8b\u3068\u3057\u3066\u3001\u30d4\u30f3\u30d8\u30c3\u30c0\u30fc\u3001\u7aef\u5b50\u53f0\u3001\u5909\u5727\u5668\u3001\u30ea\u30ec\u30fc\u3001\u30b9\u30a4\u30c3\u30c1\u3001\u5927\u578b\u306e\u96fb\u89e3\u30b3\u30f3\u30c7\u30f3\u30b5\u3001\u30d1\u30ef\u30fc\u534a\u5c0e\u4f53\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u975e\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u3068\u306f\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>\u975e\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb<\/strong> \u306f\u3001\u5185\u58c1\u306b\u5c0e\u96fb\u6027\u6750\u6599\u3092\u65bd\u3055\u305a\u306b\u57fa\u677f\u3092\u8cab\u901a\u3059\u308b\u7a74\u3067\u3059\u3002\u8a2d\u8a08\u8005\u306f\u3001\u53d6\u308a\u4ed8\u3051\u306d\u3058\u3001\u6a39\u8102\u88fd\u30dd\u30b9\u30c8\u3001\u30ac\u30a4\u30c9\u30d4\u30f3\u3001\u88fd\u9020\u7528\u6cbb\u5177\u306a\u3069\u3001\u6a5f\u68b0\u7684\u306a\u7528\u9014\u306bNPTH\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3059\u3079\u3066\u306e\u53d6\u308a\u4ed8\u3051\u7a74\u3092\u975e\u3081\u3063\u304d\u306b\u3059\u3079\u304d\u3060\u3068\u6c7a\u3081\u3064\u3051\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u30b7\u30e3\u30fc\u30b7\u63a5\u5730\u7528\u306e\u53d6\u308a\u4ed8\u3051\u30dd\u30a4\u30f3\u30c8\u306b\u306f\u3001\u610f\u56f3\u7684\u306b\u3081\u3063\u304d\u3068\u9285\u30d1\u30c3\u30c9\u3092\u8a2d\u3051\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001\u96fb\u6c17\u7684\u306b\u7d76\u7e01\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306d\u3058\u7a74\u306b\u306f\u3001\u901a\u5e38\u3001\u9069\u5207\u306a\u9285\u7b94\u304a\u3088\u3073\u90e8\u54c1\u3068\u306e\u30af\u30ea\u30a2\u30e9\u30f3\u30b9\u3092\u78ba\u4fdd\u3057\u305fNPTH\u304c\u5fc5\u8981\u3067\u3059\u3002\u9069\u5207\u306a\u9078\u629e\u306f\u3001\u96fb\u6c17\u7684\u3001\u5b89\u5168\u6027\u3001\u6a5f\u68b0\u7684\u306a\u8981\u4ef6\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u90e8\u54c1\u3068\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u6280\u8853<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u6280\u8853<\/strong>\uff08THT\uff09\u306f\u3001\u90e8\u54c1\u306e\u30ea\u30fc\u30c9\u3092PCB\u306e\u7a74\u306b\u901a\u3059\u5b9f\u88c5\u65b9\u6cd5\u3067\u3059\u3002\u305d\u306e\u5f8c\u3001\u306f\u3093\u3060\u4ed8\u3051\u3001\u5727\u5165\u3001\u307e\u305f\u306f\u305d\u306e\u4ed6\u306e\u65b9\u6cd5\u3067\u30ea\u30fc\u30c9\u3092\u7d42\u7aef\u3057\u3001\u5fc5\u8981\u306a\u63a5\u7d9a\u3092\u5f62\u6210\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u822c\u7684\u306a\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u90e8\u54c1\u306e\u7a2e\u985e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u90e8\u54c1\u306e\u30ea\u30fc\u30c9\u914d\u5217\u306f\u3001\u901a\u5e38\u3001\u6b21\u306e\u3044\u305a\u308c\u304b\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30a2\u30ad\u30b7\u30e3\u30eb\u30ea\u30fc\u30c9\uff1a<\/strong> \u90e8\u54c1\u306e\u4e21\u7aef\u304b\u3089\u305d\u308c\u305e\u308c1\u672c\u306e\u30ea\u30fc\u30c9\u304c\u51fa\u3066\u3044\u307e\u3059\u3002\u62b5\u6297\u5668\u3084\u4e00\u90e8\u306e\u30c0\u30a4\u30aa\u30fc\u30c9\u304c\u4ee3\u8868\u4f8b\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30e9\u30b8\u30a2\u30eb\u30ea\u30fc\u30c9\uff1a<\/strong> \u90e8\u54c1\u672c\u4f53\u306e\u540c\u3058\u5074\u304b\u3089\u8907\u6570\u306e\u30ea\u30fc\u30c9\u304c\u51fa\u3066\u3044\u307e\u3059\u3002\u591a\u304f\u306e\u30b3\u30f3\u30c7\u30f3\u30b5\u3001LED\u3001\u30a4\u30f3\u30c0\u30af\u30bf\u306a\u3069\u304c\u8a72\u5f53\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u591a\u30d4\u30f3\u30d1\u30c3\u30b1\u30fc\u30b8\uff1a<\/strong> DIP\u3001\u30d4\u30f3\u30d8\u30c3\u30c0\u30fc\u3001\u30bd\u30b1\u30c3\u30c8\u3001\u30ea\u30ec\u30fc\u3001\u4e00\u90e8\u306e\u30b3\u30cd\u30af\u30bf\u3067\u306f\u3001\u30ea\u30fc\u30c9\u304c\u898f\u5247\u7684\u306a\u5217\u307e\u305f\u306f\u914d\u5217\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30d1\u30ef\u30fc\u30d1\u30c3\u30b1\u30fc\u30b8\uff1a<\/strong> \u4e00\u90e8\u306eTO\u578b\u30c8\u30e9\u30f3\u30b8\u30b9\u30bf\u3084\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u306a\u3069\u306e\u30c7\u30d0\u30a4\u30b9\u306f\u3001\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u30ea\u30fc\u30c9\u3068\u30d2\u30fc\u30c8\u30b7\u30f3\u30af\u307e\u305f\u306f\u6a5f\u68b0\u5f0f\u56fa\u5b9a\u5177\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u90e8\u54c1\u306e\u5b9f\u88c5\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7c21\u7565\u5316\u3057\u305fTHT\u5b9f\u88c5\u5de5\u7a0b\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u90e8\u54c1\u306e\u4ed5\u69d8\u304a\u3088\u3073\u5de5\u7a0b\u3067\u5fc5\u8981\u3068\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u30ea\u30fc\u30c9\u3092\u6210\u5f62\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30ea\u30fc\u30c9\u3092\u6307\u5b9a\u3055\u308c\u305f\u3081\u3063\u304d\u7a74\u306b\u633f\u5165\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u90e8\u54c1\u3092\u6307\u5b9a\u306e\u9ad8\u3055\u3068\u5411\u304d\u306b\u4fdd\u6301\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u624b\u306f\u3093\u3060\u3001\u30d5\u30ed\u30fc\u306f\u3093\u3060\u3001\u30bb\u30ec\u30af\u30c6\u30a3\u30d6\u306f\u3093\u3060\u3001\u307e\u305f\u306f\u627f\u8a8d\u6e08\u307f\u306e\u30d4\u30f3\u30fb\u30a4\u30f3\u30fb\u30da\u30fc\u30b9\u30c8\u5de5\u7a0b\u3067\u63a5\u5408\u90e8\u3092\u306f\u3093\u3060\u4ed8\u3051\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u5b9f\u88c5\u5de5\u7a0b\u3067\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u30ea\u30fc\u30c9\u3092\u5207\u65ad\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u306c\u308c\u3001\u306f\u3093\u3060\u5145\u586b\u3001\u30d6\u30ea\u30c3\u30b8\u3001\u640d\u50b7\u3001\u305d\u306e\u4ed6\u306e\u5408\u5426\u5224\u5b9a\u57fa\u6e96\u306b\u3064\u3044\u3066\u63a5\u5408\u90e8\u3092\u691c\u67fb\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\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\/axial-and-radial-leads-soldered-1024x576.webp\" alt=\"Close-up of through-hole electronic components with axial and radial leads soldered onto a printed circuit board\" class=\"wp-image-23565\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/axial-and-radial-leads-soldered-1024x576.webp 1024w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/axial-and-radial-leads-soldered-300x169.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/axial-and-radial-leads-soldered-768x432.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/axial-and-radial-leads-soldered-1536x864.webp 1536w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/axial-and-radial-leads-soldered-18x10.webp 18w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/axial-and-radial-leads-soldered.webp 1672w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">\u57fa\u677f\u306e\u306f\u3093\u3060\u9762\u3067\u3001\u90e8\u54c1\u306e\u30ea\u30fc\u30c9\u3092\u51f9\u5f62\u306e\u306f\u3093\u3060\u30d5\u30a3\u30ec\u30c3\u30c8\u3067\u56fa\u5b9a\u3057\u305f\u3001\u5178\u578b\u7684\u306a\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u5b9f\u88c5\u4f8b\u3002<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5177\u4f53\u7684\u306a\u5de5\u7a0b\u306f\u3001\u90e8\u54c1\u306e\u69cb\u9020\u3001\u751f\u7523\u91cf\u3001\u71b1\u5bb9\u91cf\u3001\u4fe1\u983c\u6027\u30af\u30e9\u30b9\u3001\u304a\u3088\u3073\u57fa\u677f\u3067SMT\u3068THT\u306e\u6df7\u8f09\u5b9f\u88c5\u3092\u884c\u3046\u304b\u3069\u3046\u304b\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306f\u30d3\u30a2\u3068\u540c\u3058\u3067\u3059\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u53b3\u5bc6\u306b\u306f\u7570\u306a\u308a\u307e\u3059\u3002 <a href=\"https:\/\/lead-pcb.com\/ja\/blog\/pcb-via-guide\/\" data-type=\"post\" data-id=\"7350\">\u30b9\u30eb\u30fc\u30d3\u30a2<\/a> \u306f\u3081\u3063\u304d\u7a74\u306e\u4e00\u7a2e\u3067\u3059\u304c\u3001\u901a\u5e38\u306fPCB\u306e\u5c64\u9593\u3067\u96fb\u6c17\u7684\u63a5\u7d9a\u3092\u914d\u7dda\u3059\u308b\u305f\u3081\u306b\u8a2d\u3051\u3089\u308c\u307e\u3059\u3002\u90e8\u54c1\u7528\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306f\u3001\u90e8\u54c1\u30ea\u30fc\u30c9\u3001\u30b3\u30cd\u30af\u30bf\u30d4\u30f3\u3001\u307e\u305f\u306f\u7aef\u5b50\u3092\u53d7\u3051\u5165\u308c\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u7279\u5fb4<\/th><th>\u90e8\u54c1\u7528\u30b9\u30eb\u30fc\u30db\u30fc\u30eb<\/th><th>\u30b9\u30eb\u30fc\u30d3\u30a2<\/th><\/tr><tr><td>\u4e3b\u306a\u76ee\u7684<\/td><td>\u30ea\u30fc\u30c9\u307e\u305f\u306f\u30d4\u30f3\u306e\u53d6\u308a\u4ed8\u3051\u30fb\u7d42\u7aef<\/td><td>\u5c64\u9593\u3092\u9285\u3067\u63a5\u7d9a\u3059\u308b<\/td><\/tr><tr><td>\u90e8\u54c1\u304c\u633f\u5165\u3055\u308c\u308b<\/td><td>\u901a\u5e38<\/td><td>\u3044\u3044\u3048<\/td><\/tr><tr><td>\u4e00\u822c\u7684\u306a\u76f8\u5bfe\u30b5\u30a4\u30ba<\/td><td>\u5927\u304d\u3044\u3053\u3068\u304c\u591a\u3044<\/td><td>\u5c0f\u3055\u3044\u3053\u3068\u304c\u591a\u3044<\/td><\/tr><tr><td>\u306f\u3093\u3060\u4ed8\u3051\u3068\u306e\u95a2\u4fc2<\/td><td>\u4e00\u822c\u306b\u90e8\u54c1\u306e\u63a5\u5408\u90e8\u3092\u5f62\u6210\u3059\u308b<\/td><td>\u30c6\u30f3\u30c8\u51e6\u7406\u3001\u958b\u653e\u3001\u6813\u57cb\u3081\u3001\u307e\u305f\u306f\u5145\u586b\u304c\u53ef\u80fd<\/td><\/tr><tr><td>\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u3068\u306e\u95a2\u4fc2<\/td><td>\u90e8\u54c1\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u306e\u4e00\u90e8<\/td><td>\u901a\u5e38\u306f\u914d\u7dda\u306e\u4e00\u90e8<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3069\u3061\u3089\u306e\u30d5\u30a3\u30fc\u30c1\u30e3\u30fc\u3082\u3001\u3059\u3079\u3066\u306ePCB\u5c64\u3092\u8cab\u901a\u3057\u3001\u3081\u3063\u304d\u3055\u308c\u305f\u30d0\u30ec\u30eb\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u8a2d\u8a08\u30eb\u30fc\u30eb\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3001\u304a\u3088\u3073\u88fd\u9020\u4e0a\u306e\u76ee\u7684\u306f\u7570\u306a\u308b\u305f\u3081\u3001\u76f8\u4e92\u306b\u7f6e\u304d\u63db\u3048\u53ef\u80fd\u306a\u3082\u306e\u3068\u3057\u3066\u6271\u3046\u3079\u304d\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30eb\u30fc\u30d3\u30a2\u306f\u3001\u57fa\u677f\u5168\u4f53\u3092\u8cab\u901a\u305b\u305a\u306b\u5916\u5c64\u30681\u3064\u4ee5\u4e0a\u306e\u5185\u5c64\u3092\u63a5\u7d9a\u3059\u308b\u30d6\u30e9\u30a4\u30f3\u30c9\u30d3\u30a2\u3084\u3001\u5185\u5c64\u540c\u58eb\u306e\u307f\u3092\u63a5\u7d9a\u3059\u308b\u57cb\u3081\u8fbc\u307f\u30d3\u30a2\u3068\u3082\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306f\u3069\u306e\u3088\u3046\u306b\u88fd\u9020\u3055\u308c\u308b\u304b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PCB\u306e\u6b63\u78ba\u306a\u88fd\u9020\u5de5\u7a0b\u306f\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u57fa\u672c\u7684\u306a\u624b\u9806\u306f\u7c21\u6f54\u3067\u3059\u3002<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u57fa\u677f\u3092\u7a4d\u5c64\u3059\u308b\uff1a<\/strong> \u9285\u7b94\u3001\u30b3\u30a2\u6750\u3001\u30d7\u30ea\u30d7\u30ec\u30b0\u3092\u5fc5\u8981\u306a\u7a4d\u5c64\u69cb\u6210\u306b\u63a5\u5408\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u7a74\u3092\u958b\u3051\u308b\uff1a<\/strong> CNC\u30c9\u30ea\u30eb\u3067\u4e38\u7a74\u3092\u958b\u3051\u307e\u3059\u3002\u30b9\u30ed\u30c3\u30c8\u3084\u5927\u304d\u306a\u5f62\u72b6\u306b\u306f\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u52a0\u5de5\u3092\u7528\u3044\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u7a74\u306e\u5185\u58c1\u3092\u6d17\u6d44\u30fb\u51e6\u7406\u3059\u308b\uff1a<\/strong> \u9285\u304c\u78ba\u5b9f\u306b\u63a5\u7740\u3059\u308b\u3088\u3046\u3001\u5207\u308a\u304f\u305a\u3084\u6a39\u8102\u306e\u6c5a\u308c\u3092\u53d6\u308a\u9664\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u7a74\u306b\u5c0e\u96fb\u6027\u3092\u6301\u305f\u305b\u308b\uff1a<\/strong> \u975e\u5c0e\u96fb\u6027\u306e\u7a74\u58c1\u306b\u8584\u3044\u5c0e\u96fb\u5c64\u3092\u5f62\u6210\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u9285\u30d0\u30ec\u30eb\u3092\u5f62\u6210\u3059\u308b\uff1a<\/strong> \u96fb\u6c17\u3081\u3063\u304d\u3067\u9285\u306e\u539a\u3055\u3092\u5897\u3057\u3001\u5fc5\u8981\u306a\u5c64\u306e\u30d1\u30c3\u30c9\u3092\u63a5\u7d9a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u5916\u5c64\u306e\u52a0\u5de5\u3092\u5b8c\u4e86\u3059\u308b\uff1a<\/strong> \u88fd\u9020\u696d\u8005\u306f\u3001\u81ea\u793e\u306e\u5de5\u7a0b\u306b\u5f93\u3063\u3066\u5916\u5c64\u56de\u8def\u306e\u9732\u5149\u3001\u3081\u3063\u304d\u3001\u30a8\u30c3\u30c1\u30f3\u30b0\u3092\u884c\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30bd\u30eb\u30c0\u30fc\u30de\u30b9\u30af\u3068\u8868\u9762\u4ed5\u4e0a\u3052\u3092\u65bd\u3059\uff1a<\/strong> \u9732\u51fa\u3057\u305f\u30d1\u30c3\u30c9\u306b\u6307\u5b9a\u306e\u8868\u9762\u4ed5\u4e0a\u3052\u3092\u65bd\u3057\u3001\u57fa\u677f\u3092\u691c\u67fb\u3057\u3066\u96fb\u6c17\u8a66\u9a13\u3092\u884c\u3044\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u5de5\u7a0b\u304b\u3089\u3001 <strong>\u5b8c\u6210\u7a74\u5f84<\/strong> \u304c\u5fc5\u305a\u3057\u3082\u30c9\u30ea\u30eb\u5de5\u5177\u306e\u76f4\u5f84\u3068\u540c\u3058\u3067\u306f\u306a\u3044\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u3081\u3063\u304d\u306b\u3088\u3063\u3066PTH\u306e\u958b\u53e3\u5f84\u306f\u5c0f\u3055\u304f\u306a\u308b\u305f\u3081\u3001\u56f3\u9762\u306b\u793a\u3055\u308c\u305f\u5b8c\u6210\u7a74\u5f84\u3092\u5f97\u3089\u308c\u308b\u3088\u3046\u3001\u88fd\u9020\u696d\u8005\u306f\u901a\u5e38\u3001\u305d\u308c\u3088\u308a\u5927\u304d\u306a\u88fd\u9020\u7528\u30c9\u30ea\u30eb\u3092\u9078\u3073\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u6280\u8853\u3068\u8868\u9762\u5b9f\u88c5\u6280\u8853\u306e\u6bd4\u8f03<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SMT\u3067\u306f\u90e8\u54c1\u306e\u7aef\u5b50\u3092PCB\u8868\u9762\u306e\u30d1\u30c3\u30c9\u306b\u5b9f\u88c5\u3057\u3001THT\u3067\u306f\u30ea\u30fc\u30c9\u3092\u57fa\u677f\u306b\u633f\u5165\u3057\u307e\u3059\u3002\u3069\u3061\u3089\u304b\u4e00\u65b9\u304c\u5fc5\u305a\u512a\u308c\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u306a\u304f\u3001\u591a\u304f\u306e\u88fd\u54c1\u3067\u4e21\u65b9\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u8a2d\u8a08\u8981\u7d20<\/th><th>\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u6280\u8853<\/th><th>\u8868\u9762\u5b9f\u88c5\u6280\u8853<\/th><\/tr><tr><td>\u6a5f\u68b0\u7684\u306a\u8377\u91cd\u7d4c\u8def<\/td><td>\u30ea\u30fc\u30c9\u304c\u57fa\u677f\u3092\u8cab\u901a\u3059\u308b<\/td><td>\u7aef\u5b50\u3092\u8868\u9762\u306b\u63a5\u5408\u3059\u308b<\/td><\/tr><tr><td>\u90e8\u54c1\u5bc6\u5ea6<\/td><td>\u591a\u304f\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3067\u4f4e\u3044<\/td><td>\u591a\u304f\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3067\u9ad8\u3044<\/td><\/tr><tr><td>\u914d\u7dda\u30b9\u30da\u30fc\u30b9<\/td><td>\u7a74\u304c\u8907\u6570\u306e\u5c64\u306b\u5f71\u97ff\u3059\u308b<\/td><td>\u901a\u5e38\u3001\u5f71\u97ff\u3059\u308b\u5c64\u304c\u5c11\u306a\u3044<\/td><\/tr><tr><td>\u81ea\u52d5\u5b9f\u88c5<\/td><td>\u53ef\u80fd\u3060\u304c\u3001\u5225\u5de5\u7a0b\u304c\u5fc5\u8981\u306a\u5834\u5408\u304c\u3042\u308b<\/td><td>\u9ad8\u901f\u30de\u30a6\u30f3\u30bf\u30fc\u306b\u3088\u308b\u5b9f\u88c5\u3068\u30ea\u30d5\u30ed\u30fc\u306b\u9069\u3057\u3066\u3044\u308b<\/td><\/tr><tr><td>Prototyping and hand work<\/td><td>Often convenient for larger parts<\/td><td>Efficient with suitable tools and experience<\/td><\/tr><tr><td>\u4ee3\u8868\u7684\u306a\u7528\u9014<\/td><td>Connectors, transformers, large or stressed parts, selected power devices<\/td><td>ICs, small passives, dense digital and RF assemblies<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Advantages of Through-Hole Technology<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Leads passing through the PCB can provide a useful mechanical load path.<\/li>\n\n\n\n<li>Larger component bodies and pitches can simplify manual prototyping and repair.<\/li>\n\n\n\n<li>THT supports many high-power, high-voltage, electromechanical, and legacy component packages.<\/li>\n\n\n\n<li>It remains practical for connectors and controls exposed to insertion, withdrawal, or handling forces.<\/li>\n\n\n\n<li>Press-fit through-hole connectors can provide solderless termination where the design and process support it.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Limitations of Through-Hole Technology<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Drilling and plating add fabrication steps and cost.<\/li>\n\n\n\n<li>Holes consume routing area on multiple layers.<\/li>\n\n\n\n<li>THT usually supports lower component density than SMT.<\/li>\n\n\n\n<li>Mixed-technology boards may need wave or selective soldering in addition to reflow.<\/li>\n\n\n\n<li>Long leads and barrels can add parasitic inductance and capacitance, which matter in high-speed or high-frequency circuits.<\/li>\n\n\n\n<li>Rework can damage pads or barrels if heat and mechanical force are not controlled.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Design a Through-Hole PCB Footprint<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A reliable footprint begins with the component drawing and the PCB manufacturer&#8217;s capabilities. Avoid selecting a hole size from a generic chart without checking tolerances.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Start With the Maximum Lead Size<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Use the component manufacturer&#8217;s maximum lead width or diameter, not only the nominal value. For rectangular or irregular leads, calculate the diagonal or use the supplier&#8217;s recommended PCB hole dimensions. Then add enough clearance for insertion, positional tolerance, plating variation, and the assembly process.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A hole that is too small may reject components after plating or force operators to damage the lead. A hole that is too large can reduce solder control and mechanical support. Ask the assembler whether automated insertion, hand placement, or pin-in-paste creates additional constraints.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Distinguish Finished Hole Size From Drill Size<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">State clearly whether a drawing dimension refers to the finished hole or the production tool. For PTH features, specifying the required finished diameter is usually the clearest approach because the PCB manufacturer controls plating compensation and drill selection.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Provide an Adequate Annular Ring<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The annular ring must remain after drilling, plating, and layer-to-layer registration tolerances are considered. Too little copper can create breakout, weaken the land-to-barrel connection, or violate the applicable acceptance criteria.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">IPC-2221 is a widely used design reference covering through-hole attachment, lands, annular rings, plated holes, hole spacing, and aspect ratio. Its public <a href=\"https:\/\/www.ipc.org\/TOC\/IPC-2221B.pdf\">table of contents<\/a> illustrates why these parameters must be considered together rather than as isolated dimensions. Apply the revision and performance requirements named in your contract, and confirm the fabricator&#8217;s capabilities.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Check the Hole Aspect Ratio<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For a mechanically drilled through hole, aspect ratio is commonly expressed as:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Aspect ratio = PCB thickness \u00f7 finished hole diameter<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A thicker board or smaller hole increases the aspect ratio and makes cleaning and uniform copper plating more difficult. There is no single maximum that applies to every supplier, material, reliability class, and plating process. Use the manufacturer&#8217;s published limit and leave margin for production variation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Manage Plane Connections and Thermal Relief<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A PTH connected directly to a large copper plane can draw heat away from the solder joint. Thermal-relief spokes may improve solderability, especially during hand or wave soldering. However, a solid connection may be preferred for high current, heat transfer, or mechanical reasons. The final choice should balance electrical performance, thermal behavior, and assembly capability.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. Define Mechanical Holes and Slots Clearly<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Identify every hole or slot as plated or non-plated. For hardware, include the finished size, tolerance, copper keepout, edge clearance, and any grounding requirement. Plated and unplated slots should also be separated in the fabrication notes or data.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7. Generate Unambiguous Manufacturing Data<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Provide complete Gerber and NC drill data or an accepted intelligent format such as IPC-2581 or ODB++. Include a fabrication drawing or drill table that identifies PTH and NPTH features, finished sizes, tolerances, and special requirements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">EDA tools often separate plated and non-plated drill outputs. For example, <a href=\"https:\/\/docs.kicad.org\/10.0\/en\/pcbnew\/pcbnew.html\">KiCad&#8217;s drill-file guidance<\/a> states that PTH and NPTH features are placed in different Excellon files by default and should be merged only when the manufacturer requests it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Common Through-Hole PCB Problems<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Incorrect Finished Hole Size<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Confusing nominal lead size, finished hole size, and drill-tool size can cause poor fit or assembly failures. Check the component tolerance and communicate the required finished dimension.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Insufficient Annular Ring<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A small pad, inaccurate drilling, or layer misregistration can leave too little copper around the hole. This may reduce connection reliability and create an acceptance defect.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Barrel Voids or Cracks<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u58c1\u9762\u306e\u524d\u51e6\u7406\u3084\u3081\u3063\u304d\u304c\u4e0d\u5341\u5206\u3060\u3068\u3001\u30dc\u30a4\u30c9\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u71b1\u30b5\u30a4\u30af\u30eb\u3084Z\u8ef8\u65b9\u5411\u306e\u81a8\u5f35\u306b\u3088\u3063\u3066\u3001\u7279\u306b\u539a\u3044\u57fa\u677f\u3084\u30a2\u30b9\u30da\u30af\u30c8\u6bd4\u306e\u9ad8\u3044\u7a74\u3067\u306f\u3001\u7a74\u58c1\u306b\u5fdc\u529b\u304c\u304b\u304b\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u7528\u9014\u306b\u5fdc\u3058\u3066\u3001\u9069\u5207\u306a\u6750\u6599\u3001\u5f62\u72b6\u3001\u3081\u3063\u304d\u8981\u4ef6\u3001\u8a8d\u5b9a\u8a66\u9a13\u3092\u9078\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u306f\u3093\u3060\u5145\u586b\u4e0d\u8db3\u307e\u305f\u306f\u6fe1\u308c\u4e0d\u826f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5927\u304d\u306a\u9285\u30d7\u30ec\u30fc\u30f3\u3001\u9178\u5316\u3057\u305f\u8868\u9762\u3001\u4e0d\u9069\u5207\u306a\u30d5\u30e9\u30c3\u30af\u30b9\u3001\u52a0\u71b1\u4e0d\u8db3\u3001\u307e\u305f\u306f\u30ea\u30fc\u30c9\u3068\u7a74\u306e\u5bf8\u6cd5\u306e\u4e0d\u9069\u5408\u306b\u3088\u308a\u3001\u306f\u3093\u3060\u304c\u6b63\u3057\u304f\u5145\u586b\u3055\u308c\u305a\u3001\u63a5\u5408\u90e8\u304c\u6fe1\u308c\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u7ba1\u7406\u3055\u308c\u305f\u5de5\u7a0b\u958b\u767a\u3092\u901a\u3058\u3066\u3001\u30b5\u30fc\u30de\u30eb\u30ea\u30ea\u30fc\u30d5\u3001\u4e88\u71b1\u3001\u30d5\u30e9\u30c3\u30af\u30b9\u3001\u6e29\u5ea6\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3001\u4fdd\u6301\u6642\u9593\u3092\u8abf\u6574\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PTH\uff0fNPTH\u306e\u8aa4\u5909\u63db<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u88fd\u9020\u30c7\u30fc\u30bf\u3067\u3081\u3063\u304d\u7a74\u3068\u975e\u3081\u3063\u304d\u7a74\u304c\u660e\u78ba\u306b\u533a\u5225\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u3001\u53d6\u4ed8\u7a74\u306b\u3081\u3063\u304d\u304c\u65bd\u3055\u308c\u305f\u308a\u3001\u90e8\u54c1\u7a74\u304c\u975e\u3081\u3063\u304d\u306b\u306a\u3063\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u30c9\u30ea\u30eb\u30c7\u30fc\u30bf\u3092\u5206\u3051\u3001\u660e\u78ba\u306a\u30c9\u30ea\u30eb\u8868\u3092\u7528\u610f\u3059\u308c\u3070\u3001\u3053\u306e\u30ea\u30b9\u30af\u3092\u4f4e\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30ea\u30ef\u30fc\u30af\u4e2d\u306e\u640d\u50b7<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u904e\u5ea6\u306a\u71b1\u3084\u529b\u304c\u52a0\u308f\u308b\u3068\u3001\u30e9\u30f3\u30c9\u306e\u5265\u96e2\u3001\u7a74\u58c1\u306e\u640d\u50b7\u3001\u5185\u90e8\u63a5\u7d9a\u306e\u5265\u96e2\u304c\u8d77\u3053\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u6e29\u5ea6\u5236\u5fa1\u3055\u308c\u305f\u5de5\u5177\u3092\u4f7f\u7528\u3057\u3001\u71b1\u5bb9\u91cf\u306e\u5927\u304d\u306a\u63a5\u5408\u90e8\u306b\u306f\u5341\u5206\u306a\u4e88\u71b1\u3092\u884c\u3044\u3001\u8a8d\u5b9a\u6e08\u307f\u306e\u53d6\u308a\u5916\u3057\u5de5\u7a0b\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u3079\u304d\u5834\u5408<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a2d\u8a08\u4e0a\u3001\u6b21\u306e\u3044\u305a\u308c\u304b\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u69cb\u9020\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SMT\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u306f\u5165\u624b\u3067\u304d\u306a\u3044\u3001\u307e\u305f\u306f\u9069\u3055\u306a\u3044\u30ea\u30fc\u30c9\u4ed8\u304d\u90e8\u54c1<\/li>\n\n\n\n<li>\u7e70\u308a\u8fd4\u3057\u6a5f\u68b0\u7684\u306a\u529b\u304c\u52a0\u308f\u308b\u30b3\u30cd\u30af\u30bf\u3001\u30b9\u30a4\u30c3\u30c1\u3001\u307e\u305f\u306f\u7aef\u5b50<\/li>\n\n\n\n<li>\u5927\u304d\u306a\u30ea\u30fc\u30c9\u307e\u305f\u306f\u76f8\u5f53\u306a\u8cea\u91cf\u3092\u6301\u3064\u30c8\u30e9\u30f3\u30b9\u3001\u30ea\u30ec\u30fc\u3001\u30a4\u30f3\u30c0\u30af\u30bf\u3001\u30b3\u30f3\u30c7\u30f3\u30b5\u3001\u307e\u305f\u306f\u96fb\u529b\u30c7\u30d0\u30a4\u30b9<\/li>\n\n\n\n<li>\u5727\u5165\u30b3\u30cd\u30af\u30bf\u307e\u305f\u306f\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30c8\u30d4\u30f3<\/li>\n\n\n\n<li>\u53d6\u4ed8\u3001\u4f4d\u7f6e\u6c7a\u3081\u3001\u6cbb\u5de5\u5177\u3001\u307e\u305f\u306f\u30af\u30ea\u30a2\u30e9\u30f3\u30b9\u7528\u306e\u69cb\u9020<\/li>\n\n\n\n<li>\u7c21\u7d20\u3067\u7d44\u307f\u7acb\u3066\u3084\u3059\u3044\u8a66\u4f5c\u6a5f\u307e\u305f\u306f\u6559\u80b2\u7528\u30a2\u30bb\u30f3\u30d6\u30ea<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5358\u306b\u5f37\u5ea6\u304c\u9ad8\u305d\u3046\u306b\u898b\u3048\u308b\u3068\u3044\u3046\u7406\u7531\u3060\u3051\u3067THT\u3092\u9078\u3070\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u30b3\u30cd\u30af\u30bf\u306b\u306f\u3001\u4fdd\u6301\u30bf\u30d6\u3001\u306d\u3058\u3001\u30b9\u30c6\u30fc\u30ad\u30f3\u30b0\u3001\u307e\u305f\u306f\u7b50\u4f53\u306b\u3088\u308b\u652f\u6301\u304c\u5fc5\u8981\u306a\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u540c\u69d8\u306b\u3001\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u3001\u6750\u6599\u3001\u7d44\u7acb\u5de5\u7a0b\u3001\u52d5\u4f5c\u74b0\u5883\u304c\u9069\u5207\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308c\u3070\u3001SMT\u90e8\u54c1\u3082\u9ad8\u3044\u4fe1\u983c\u6027\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306b\u95a2\u3059\u308b\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u3059\u3079\u3066\u306ePCB\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306b\u3081\u3063\u304d\u304c\u65bd\u3055\u308c\u3066\u3044\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3044\u3044\u3048\u3002\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306f\u96fb\u6c17\u7684\u306a\u6a5f\u80fd\u3092\u679c\u305f\u3057\u3001\u975e\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306f\u4e00\u822c\u306b\u6a5f\u68b0\u7684\u306a\u7528\u9014\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002\u88fd\u9020\u30c7\u30fc\u30bf\u3067\u5fc5\u8981\u306a\u7a2e\u985e\u3092\u660e\u793a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PTH\u3068THT\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">PTH\u306f\u3001PCB\u5185\u306e <strong>\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb<\/strong> \u7a74\u3092\u6307\u3057\u307e\u3059\u3002THT\u304c\u8868\u3059\u306e\u306f <strong>\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u6280\u8853<\/strong>\u3067\u3042\u308a\u3001\u57fa\u677f\u3092\u8cab\u901a\u3057\u3066\u90e8\u54c1\u3092\u5b9f\u88c5\u307e\u305f\u306f\u63a5\u7d9a\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002THT\u90e8\u54c1\u306b\u306f\u4e00\u822c\u306bPTH\u30d1\u30c3\u30c9\u304c\u4f7f\u308f\u308c\u307e\u3059\u304c\u3001\u3053\u308c\u3089\u306e\u7528\u8a9e\u306f\u540c\u3058\u610f\u5473\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u90e8\u54c1\u306f\u6642\u4ee3\u9045\u308c\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3044\u3044\u3048\u3002\u5c0f\u578b\u3067\u5927\u91cf\u751f\u7523\u3055\u308c\u308b\u591a\u304f\u306e\u30a2\u30bb\u30f3\u30d6\u30ea\u3067\u306fSMT\u304c\u4e3b\u6d41\u3067\u3059\u304c\u3001\u30b3\u30cd\u30af\u30bf\u3001\u96fb\u6e90\u90e8\u54c1\u3001\u30c8\u30e9\u30f3\u30b9\u3001\u5236\u5fa1\u90e8\u54c1\u3001\u5727\u5165\u30b7\u30b9\u30c6\u30e0\u3001\u6a5f\u68b0\u7684\u8ca0\u8377\u306e\u5927\u304d\u3044\u7528\u9014\u3067\u306f\u3001\u4eca\u3082THT\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u90e8\u54c1\u306f\u30ea\u30d5\u30ed\u30fc\u306f\u3093\u3060\u4ed8\u3051\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u304d\u308b\u3082\u306e\u3082\u3042\u308a\u307e\u3059\u3002\u30d4\u30f3\u30fb\u30a4\u30f3\u30fb\u30da\u30fc\u30b9\u30c8\u3068\u3082\u547c\u3070\u308c\u308b\u30a4\u30f3\u30c8\u30eb\u30fc\u30b7\u30d6\u30fb\u30ea\u30d5\u30ed\u30fc\u3067\u306f\u3001\u90e8\u54c1\u3092\u633f\u5165\u3059\u308b\u524d\u306b\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u30d1\u30c3\u30c9\u3078\u306f\u3093\u3060\u30da\u30fc\u30b9\u30c8\u3092\u5857\u5e03\u3057\u3001\u305d\u306e\u5f8c\u30ea\u30d5\u30ed\u30fc\u3057\u307e\u3059\u3002\u90e8\u54c1\u3001\u57fa\u677f\u306e\u8868\u9762\u4ed5\u4e0a\u3052\u3001\u30da\u30fc\u30b9\u30c8\u91cf\u3001\u958b\u53e3\u90e8\u306e\u8a2d\u8a08\u3001\u71b1\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u3059\u3079\u3066\u304c\u3001\u3053\u306e\u5de5\u7a0b\u306b\u9069\u5408\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306e\u30b5\u30a4\u30ba\u306f\u3069\u306e\u304f\u3089\u3044\u306b\u3059\u3079\u304d\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9069\u5207\u306a\u4ed5\u4e0a\u304c\u308a\u5bf8\u6cd5\u306f\u3001\u90e8\u54c1\u30ea\u30fc\u30c9\u306e\u6700\u5927\u5bf8\u6cd5\u3001\u633f\u5165\u65b9\u6cd5\u3001\u3081\u3063\u304d\u3001\u8a31\u5bb9\u5dee\u3001\u306f\u3093\u3060\u4ed8\u3051\u5de5\u7a0b\u3001\u57fa\u677f\u539a\u3001\u88fd\u9020\u696d\u8005\u306e\u5bfe\u5fdc\u80fd\u529b\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u666e\u904d\u7684\u306a\u30af\u30ea\u30a2\u30e9\u30f3\u30b9\u5024\u306b\u983c\u3089\u305a\u3001\u90e8\u54c1\u56f3\u9762\u3092\u78ba\u8a8d\u3057\u3001DFM\u30ec\u30d3\u30e5\u30fc\u3092\u4f9d\u983c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3081\u3063\u304d\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306b\u306f\u5927\u96fb\u6d41\u3092\u6d41\u305b\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u96fb\u6d41\u3092\u6d41\u3059\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u8a31\u5bb9\u96fb\u6d41\u306f\u4ed5\u4e0a\u304c\u308a\u7a74\u5f84\u3001\u9285\u539a\u3001\u30d0\u30ec\u30eb\u306e\u54c1\u8cea\u3001\u6e29\u5ea6\u4e0a\u6607\u3001\u5404\u5c64\u3067\u306e\u63a5\u7d9a\u3001\u9069\u7528\u3055\u308c\u308b\u4fe1\u983c\u6027\u8981\u4ef6\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u5927\u96fb\u6d41\u7d4c\u8def\u306b\u306f\u3001PTH\u306e\u8907\u6570\u914d\u7f6e\u3001\u7a74\u5f84\u306e\u62e1\u5927\u3001\u9285\u7b94\u306e\u539a\u819c\u5316\u3001\u307e\u305f\u306f\u89e3\u6790\u3068\u8a66\u9a13\u3067\u691c\u8a3c\u3055\u308c\u305f\u5225\u306e\u76f8\u4e92\u63a5\u7d9a\u65b9\u6cd5\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u306f\u5358\u306a\u308b\u7a74\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3081\u3063\u304d\u3001\u30d1\u30c3\u30c9\u3001\u30af\u30ea\u30a2\u30e9\u30f3\u30b9\u3001\u5bf8\u6cd5\u3001\u88fd\u9020\u30c7\u30fc\u30bf\u306b\u3088\u3063\u3066\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u96fb\u6c17\u7684\u76f8\u4e92\u63a5\u7d9a\u3001\u90e8\u54c1\u63a5\u5408\u90e8\u3001\u307e\u305f\u306f\u6a5f\u68b0\u7684\u69cb\u9020\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b\u304b\u304c\u6c7a\u307e\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u96fb\u6c17\u7684\u5c0e\u901a\u307e\u305f\u306f\u90e8\u54c1\u306e\u63a5\u7d9a\u304c\u5fc5\u8981\u306a\u5834\u5408\u306fPTH\u3092\u4f7f\u7528\u3057\u3001\u7a74\u3092\u6a5f\u68b0\u7684\u306b\u4f7f\u7528\u3057\u3066\u96fb\u6c17\u7684\u306b\u7d76\u7e01\u3059\u308b\u5834\u5408\u306fNPTH\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u88fd\u9020\u53ef\u80fd\u306a\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u57fa\u677f\u306b\u3059\u308b\u306b\u306f\u3001\u4ed5\u4e0a\u304c\u308a\u5bf8\u6cd5\u3092\u660e\u78ba\u306b\u5b9a\u7fa9\u3057\u3001\u5341\u5206\u306a\u30e9\u30f3\u30c9\u5e45\u3092\u78ba\u4fdd\u3057\u3001\u30a2\u30b9\u30da\u30af\u30c8\u6bd4\u3068\u71b1\u7279\u6027\u3092\u78ba\u8a8d\u3057\u305f\u3046\u3048\u3067\u3001\u91cd\u8981\u306a\u5024\u3092\u3059\u3079\u3066\u90e8\u54c1\u30e1\u30fc\u30ab\u30fc\u3068\u57fa\u677f\u30e1\u30fc\u30ab\u30fc\u306e\u4e21\u65b9\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>A through hole is an opening that passes completely from one side of a printed circuit board (PCB) to the other. It may be plated with conductive copper to create an electrical connection, or left unplated for mechanical use. Through holes are commonly used for component leads, connectors, vias, mounting hardware, alignment pins, and slots. The term can be confusing because it may describe the physical hole, a plated electrical feature, or the component-mounting process known as through-hole technology (THT). Understanding the difference helps designers create accurate footprints, avoid manufacturing errors, and choose the right assembly method. Key Takeaways What Does Through Hole Mean in PCB Design? In PCB design, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":23562,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"What Is a Through Hole? PCB Types, Uses, and Design Guide","_seopress_titles_desc":"Learn what a through hole is in PCB design, how plated and non-plated holes work, and when through-hole components are the right choice for your PCB","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[{"_seopress_pro_rich_snippets_article_type":"Article","_seopress_pro_rich_snippets_article_title":"","_seopress_pro_rich_snippets_article_desc":"","_seopress_pro_rich_snippets_article_author":"","_seopress_pro_rich_snippets_article_img":"","_seopress_pro_rich_snippets_article_coverage_start_date":"","_seopress_pro_rich_snippets_article_coverage_start_time":"","_seopress_pro_rich_snippets_article_coverage_end_date":"","_seopress_pro_rich_snippets_article_coverage_end_time":"","_seopress_pro_rich_snippets_article_speakable_css_selector":"","_seopress_pro_rich_snippets_type":"faq","_seopress_pro_rich_snippets_faq":[{"question":"Is Every PCB Through Hole Plated?","answer":"No. Plated through holes provide an electrical function, while non-plated through holes are generally mechanical. The fabrication data must identify which type is required."},{"question":"What Is the Difference Between PTH and THT?","answer":"PTH describes a plated through hole in the PCB. THT describes through-hole technology, the method of mounting or terminating a component through a board. A THT component commonly uses PTH pads, but the terms do not mean the same thing."},{"question":"Are Through-Hole Components Obsolete?","answer":"No. SMT dominates many compact, high-volume assemblies, but THT remains important for connectors, power components, transformers, controls, press-fit systems, and mechanically demanding applications."},{"question":"Can Through-Hole Components Be Reflow Soldered?","answer":"Some can. Pin-in-paste, also called intrusive reflow, deposits solder paste at a through-hole pad before component insertion and reflow. The component, board finish, paste volume, aperture design, and thermal profile must all be compatible with the process."},{"question":"What Size Should a Through Hole Be?","answer":"The correct finished size depends on the component's maximum lead dimensions, insertion method, plating, tolerances, soldering process, board thickness, and fabricator capability. Use the component drawing and obtain a DFM review instead of relying on one universal clearance value."},{"question":"Can a Plated Through Hole Carry High Current?","answer":"It can carry current, but capacity depends on finished diameter, copper thickness, barrel quality, temperature rise, connections on each layer, and the applicable reliability requirements. High-current paths may need multiple PTHs, larger holes, heavier copper, or an alternative interconnect validated by analysis and testing."}]}],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"categories":[14,16],"tags":[],"class_list":["post-23560","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electronic-circuit","category-pcb-fabrication"],"acf":[],"meta_box":[],"_links":{"self":[{"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/posts\/23560","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/comments?post=23560"}],"version-history":[{"count":0,"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/posts\/23560\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/media\/23562"}],"wp:attachment":[{"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/media?parent=23560"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/categories?post=23560"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lead-pcb.com\/ja\/wp-json\/wp\/v2\/tags?post=23560"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}