{"id":23536,"date":"2026-09-09T09:32:18","date_gmt":"2026-09-09T09:32:18","guid":{"rendered":"https:\/\/lead-pcb.com\/?p=23536"},"modified":"2026-10-21T07:57:23","modified_gmt":"2026-10-21T07:57:23","slug":"qfn-packages","status":"publish","type":"post","link":"https:\/\/lead-pcb.com\/ja\/blog\/qfn-packages\/","title":{"rendered":"QFN\u30d1\u30c3\u30b1\u30fc\u30b8\u3068\u306f\uff1fPCB\u8a2d\u8a08\u30fb\u5b9f\u88c5\u306e\u5b9f\u8df5\u30ac\u30a4\u30c9"},"content":{"rendered":"<p class=\"wp-block-paragraph\">QFN\u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u3001\u96fb\u6e90\u3001\u30ef\u30a4\u30e4\u30ec\u30b9\u30e2\u30b8\u30e5\u30fc\u30eb\u3001\u30bb\u30f3\u30b5\u30fc\u3001\u30de\u30a4\u30af\u30ed\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u3001\u81ea\u52d5\u8eca\u7528\u96fb\u5b50\u6a5f\u5668\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u88fd\u54c1\u306b\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u5c0f\u578b\u306e\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u3001\u77ed\u3044\u96fb\u6c17\u7d4c\u8def\u3001\u52b9\u7387\u7684\u306a\u71b1\u4f1d\u5c0e\u306b\u3088\u308a\u3001\u5927\u578b\u306e\u30ea\u30fc\u30c9\u4ed8\u304d\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u4ee3\u308f\u308b\u9b45\u529b\u7684\u306a\u9078\u629e\u80a2\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u7701\u30b9\u30da\u30fc\u30b9\u3092\u5b9f\u73fe\u3059\u308b\u540c\u3058\u5e95\u9762\u63a5\u7d9a\u306b\u3088\u3063\u3066\u3001QFN\u306e\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u8a2d\u8a08\u3001\u306f\u3093\u3060\u4ed8\u3051\u3001\u691c\u67fb\u306b\u306f\u3001\u3088\u308a\u53b3\u5bc6\u306a\u7ba1\u7406\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u306f\u3001QFN\u30d1\u30c3\u30b1\u30fc\u30b8\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\u3002\u307e\u305f\u3001PCB\u8a2d\u8a08\u8005\u306f\u63a1\u7528\u524d\u306b\u4f55\u3092\u77e5\u3063\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308b\u3067\u3057\u3087\u3046\u304b\u3002\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001QFN\u306e\u69cb\u9020\u3001\u4e00\u822c\u7684\u306a\u7a2e\u985e\u3001\u5229\u70b9\u3001\u5236\u7d04\u3001PCB\u30ec\u30a4\u30a2\u30a6\u30c8\u8981\u4ef6\u3001\u5b9f\u88c5\u65b9\u6cd5\u3001\u4e0d\u826f\u3092\u9632\u3050\u305f\u3081\u306e\u5b9f\u8df5\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\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><strong>QFN\u306fQuad Flat No-Lead\u306e\u7565\u3067\u3059\u3002<\/strong> \u96fb\u6c17\u7aef\u5b50\u306f\u4e3b\u306b\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u56db\u8fba\u306b\u6cbf\u3063\u305f\u5e95\u9762\u306b\u914d\u7f6e\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u300c\u30ea\u30fc\u30c9\u30ec\u30b9\u300d\u306f\u30d1\u30c3\u30b1\u30fc\u30b8\u5f62\u72b6\u3092\u8868\u3059\u3082\u306e\u3067\u3042\u308a\u3001\u6750\u6599\u306e\u898f\u5236\u9069\u5408\u6027\u3092\u793a\u3059\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/strong> QFN\u306b\u306f\u3001\u5916\u5074\u306b\u7a81\u304d\u51fa\u305f\u30ac\u30eb\u30a6\u30a3\u30f3\u30b0\u578b\u30ea\u30fc\u30c9\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u3001\u305d\u308c\u3060\u3051\u3067\u90e8\u54c1\u304c\u925b\u30d5\u30ea\u30fc\u307e\u305f\u306fRoHS\u6307\u4ee4\u306b\u9069\u5408\u3057\u3066\u3044\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002<\/li>\n\n\n\n<li><strong>\u591a\u304f\u306eQFN\u306b\u306f\u3001\u4e2d\u592e\u306b\u9732\u51fa\u30d1\u30c3\u30c9\u304c\u3042\u308a\u307e\u3059\u3002<\/strong> \u9732\u51fa\u30d1\u30c3\u30c9\u306f\u3001\u653e\u71b1\u3001\u96fb\u6c17\u63a5\u7d9a\u3001\u307e\u305f\u306f\u305d\u306e\u4e21\u65b9\u306e\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u30b0\u30e9\u30a6\u30f3\u30c9\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u3068\u6c7a\u3081\u3064\u3051\u305a\u3001\u5fc5\u305a\u90e8\u54c1\u306e\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n\n\n\n<li><strong>\u4e3b\u306a\u5229\u70b9\u306f\u3001\u5c0f\u578b\u3067\u3042\u308b\u3053\u3068\u3001\u5bc4\u751f\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u304c\u5c0f\u3055\u3044\u3053\u3068\u3001\u71b1\u7279\u6027\u306b\u512a\u308c\u3066\u3044\u308b\u3053\u3068\u3001\u6a19\u6e96\u7684\u306a\u8868\u9762\u5b9f\u88c5\u5de5\u7a0b\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3053\u3068\u3067\u3059\u3002<\/strong><\/li>\n\n\n\n<li><strong>\u4e3b\u306a\u8ab2\u984c\u306f\u3001\u306f\u3093\u3060\u63a5\u5408\u90e8\u304c\u898b\u3048\u306b\u304f\u3044\u3053\u3068\u3001\u5de5\u7a0b\u516c\u5dee\u304c\u53b3\u3057\u3044\u3053\u3068\u3001\u30b5\u30fc\u30de\u30eb\u30d1\u30c3\u30c9\u306b\u30dc\u30a4\u30c9\u304c\u751f\u3058\u308b\u3053\u3068\u3001\u30ea\u30ef\u30fc\u30af\u304c\u96e3\u3057\u3044\u3053\u3068\u3067\u3059\u3002<\/strong><\/li>\n\n\n\n<li><strong>\u5fc5\u305a\u90e8\u54c1\u30e1\u30fc\u30ab\u30fc\u304c\u63a8\u5968\u3059\u308b\u30e9\u30f3\u30c9\u30d1\u30bf\u30fc\u30f3\u3092\u57fa\u6e96\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/strong> \u4e00\u822c\u7684\u306aQFN\u8a2d\u8a08\u30eb\u30fc\u30eb\u306f\u30ec\u30d3\u30e5\u30fc\u306b\u5f79\u7acb\u3061\u307e\u3059\u304c\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u56fa\u6709\u306e\u5bf8\u6cd5\u3084\u6307\u793a\u306b\u53d6\u3063\u3066\u4ee3\u308f\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">QFN\u30d1\u30c3\u30b1\u30fc\u30b8\u3068\u306f\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QFN\u3001\u3059\u306a\u308f\u3061 <strong>Quad Flat No-Lead\u30d1\u30c3\u30b1\u30fc\u30b8<\/strong>\u306f\u3001\u8584\u578b\u306e\u8868\u9762\u5b9f\u88c5IC\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3059\u3002\u5074\u9762\u304b\u3089\u9577\u3044\u91d1\u5c5e\u30d4\u30f3\u304c\u4f38\u3073\u308b\u4ee3\u308f\u308a\u306b\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u5e95\u9762\u306e\u5468\u7e01\u306b\u5e73\u5766\u306a\u91d1\u5c5e\u7aef\u5b50\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u7aef\u5b50\u3092\u3001PCB\u4e0a\u306e\u5bfe\u5fdc\u3059\u308b\u9285\u7b94\u30d1\u30c3\u30c9\u306b\u306f\u3093\u3060\u4ed8\u3051\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c <strong>quad<\/strong> \u300d\u306f\u3001\u7aef\u5b50\u304c\u56db\u8fba\u306b\u914d\u7f6e\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u95a2\u9023\u3059\u308b\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3042\u308bDFN\uff08Dual Flat No-Lead\uff09\u306f\u3001\u5411\u304b\u3044\u5408\u3046\u4e8c\u8fba\u306b\u7aef\u5b50\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">QFN\u306f\u3001\u6210\u5f62\u3055\u308c\u305f\u672c\u4f53\u304c\u534a\u5c0e\u4f53\u30c0\u30a4\u3088\u308a\u308f\u305a\u304b\u306b\u5927\u304d\u3044\u3060\u3051\u306e\u5834\u5408\u304c\u3042\u308b\u305f\u3081\u3001\u30c1\u30c3\u30d7\u30b9\u30b1\u30fc\u30eb\u306b\u8fd1\u3044\u30d1\u30c3\u30b1\u30fc\u30b8\u3068\u3057\u3066\u8aac\u660e\u3055\u308c\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002Analog Devices\u306f\u3001\u95a2\u9023\u3059\u308b\u30ea\u30fc\u30c9\u30d5\u30ec\u30fc\u30e0\u30fb\u30c1\u30c3\u30d7\u30b9\u30b1\u30fc\u30eb\u30fb\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u3064\u3044\u3066\u3001\u9285\u88fd\u30ea\u30fc\u30c9\u30d5\u30ec\u30fc\u30e0\u4e0a\u306b\u5f62\u6210\u3055\u308c\u3001\u5468\u7e01\u30d1\u30c3\u30c9\u3068\u9732\u51fa\u30d1\u30c9\u30eb\u3092\u5099\u3048\u305f\u6a39\u8102\u5c01\u6b62\u306e\u30ea\u30fc\u30c9\u30ec\u30b9\u30d1\u30c3\u30b1\u30fc\u30b8\u3068\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002\u9732\u51fa\u30d1\u30c9\u30eb\u306fPCB\u306b\u306f\u3093\u3060\u4ed8\u3051\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u69cb\u9020\u306b\u3088\u308a\u57fa\u677f\u9762\u7a4d\u3092\u524a\u6e1b\u3057\u306a\u304c\u3089\u3001\u96fb\u6c17\u3068\u71b1\u306e\u7d4c\u8def\u3092\u77ed\u304f\u3067\u304d\u307e\u3059\u3002<\/p>\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\/qfn-package-3d-isometric-view.webp\" alt=\"QFN package 3D isometric view showing bottom perimeter contact pads and central exposed thermal pad\" class=\"wp-image-23538\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/qfn-package-3d-isometric-view.webp 1000w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/qfn-package-3d-isometric-view-300x225.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/qfn-package-3d-isometric-view-768x576.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/qfn-package-3d-isometric-view-16x12.webp 16w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">QFN\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u306f\u30d4\u30f3\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u96fb\u6c17\u7684\u306a\u610f\u5473\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u5916\u5074\u306b\u7a81\u304d\u51fa\u305f\u811a\u306e\u5f62\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u300c\u30d4\u30f3\u300d\u306f\u3001\u5e95\u9762\u306b\u3042\u308b\u91d1\u5c5e\u5316\u7aef\u5b50\u307e\u305f\u306f\u30e9\u30f3\u30c9\u3092\u6307\u3057\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u7aef\u9762\u306b\u4e00\u90e8\u304c\u9732\u51fa\u3057\u3066\u3044\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002QFP\u306e\u30ea\u30fc\u30c9\u306e\u3088\u3046\u306b\u5916\u5074\u3078\u4f38\u3073\u3066\u3044\u306a\u3044\u305f\u3081\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u3068\u30ea\u30fc\u30c9\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u3092\u5c0f\u3055\u304f\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">QFN\u306e\u4e0b\u306b\u3042\u308b\u9732\u51fa\u30d1\u30c3\u30c9\u3068\u306f\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u304f\u306eQFN\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u306f\u3001\u5e95\u9762\u4e2d\u592e\u306b\u5927\u304d\u306a\u91d1\u5c5e\u30d1\u30c3\u30c9\u304c\u3042\u308a\u307e\u3059\u3002\u6b21\u306e\u3088\u3046\u306a\u540d\u79f0\u3067\u547c\u3070\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9732\u51fa\u30d1\u30c3\u30c9<\/li>\n\n\n\n<li>\u9732\u51fa\u30d1\u30c9\u30eb<\/li>\n\n\n\n<li>\u30b5\u30fc\u30de\u30eb\u30d1\u30c3\u30c9<\/li>\n\n\n\n<li>\u30c0\u30a4\u63a5\u7740\u30d1\u30c3\u30c9<\/li>\n\n\n\n<li>\u30b0\u30e9\u30a6\u30f3\u30c9\u30d1\u30c3\u30c9<\/li>\n<\/ul>\n\n\n\n<p 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class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306a\u30ef\u30a4\u30e4\u30dc\u30f3\u30c7\u30a3\u30f3\u30b0\u578bQFN\u306f\u3001\u901a\u5e38\u3001\u6b21\u306e5\u3064\u306e\u4e3b\u8981\u90e8\u54c1\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u534a\u5c0e\u4f53\u30c0\u30a4\uff1a<\/strong> \u30c7\u30d0\u30a4\u30b9\u306e\u6a5f\u80fd\u3092\u5b9f\u73fe\u3059\u308b\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30b7\u30ea\u30b3\u30f3\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>\u9285\u88fd\u30ea\u30fc\u30c9\u30d5\u30ec\u30fc\u30e0\uff1a<\/strong> \u30c0\u30a4\u3092\u652f\u3048\u3001\u5916\u90e8\u7aef\u5b50\u3092\u5f62\u6210\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30c0\u30a4\u63a5\u7740\u6750\uff1a<\/strong> \u30c0\u30a4\u3092\u4e2d\u592e\u306e\u30d1\u30c9\u30eb\u306b\u63a5\u7740\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30dc\u30f3\u30c7\u30a3\u30f3\u30b0\u30ef\u30a4\u30e4\uff1a<\/strong> 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https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/cross-section-diagram-16x12.webp 16w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p 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class=\"wp-block-heading\">PCB\u5b9f\u88c5\u80fd\u529b\u3078\u306e\u4f9d\u5b58\u5ea6\u304c\u9ad8\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CAD\u4e0a\u3067\u306f\u6b63\u3057\u304f\u898b\u3048\u308b\u8a2d\u8a08\u3067\u3082\u3001\u30b9\u30c6\u30f3\u30b7\u30eb\u3001\u30da\u30fc\u30b9\u30c8\u3001\u642d\u8f09\u7cbe\u5ea6\u3001\u30ea\u30d5\u30ed\u30fc\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3001\u6e7f\u5ea6\u7ba1\u7406\u3001\u691c\u67fb\u65b9\u6cd5\u304c\u9069\u5207\u3067\u306a\u3051\u308c\u3070\u3001\u5b9f\u88c5\u306b\u5931\u6557\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002PCB\u8a2d\u8a08\u8005\u3001\u57fa\u677f\u88fd\u9020\u696d\u8005\u3001\u5b9f\u88c5\u696d\u8005\u304c\u65e9\u671f\u306b\u9023\u643a\u3059\u308b\u3053\u3068\u3067\u3001\u3053\u306e\u30ea\u30b9\u30af\u3092\u4f4e\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">QFN\u3001QFP\u3001DFN\u3001BGA\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u6bd4\u8f03<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u7279\u5fb4<\/th><th>QFN<\/th><th>QFP<\/th><th>DFN<\/th><th>BGA<\/th><\/tr><tr><td>\u5916\u90e8\u63a5\u7d9a<\/td><td>4\u8fba\u306b\u914d\u7f6e\u3055\u308c\u305f\u5e73\u5766\u306a\u4e0b\u9762\u7aef\u5b50<\/td><td>4\u8fba\u306b\u914d\u7f6e\u3055\u308c\u305f\u30ac\u30eb\u30a6\u30a3\u30f3\u30b0\u30ea\u30fc\u30c9<\/td><td>2\u8fba\u306b\u914d\u7f6e\u3055\u308c\u305f\u5e73\u5766\u306a\u4e0b\u9762\u7aef\u5b50<\/td><td>\u30d1\u30c3\u30b1\u30fc\u30b8\u4e0b\u9762\u306e\u306f\u3093\u3060\u30dc\u30fc\u30eb\u914d\u5217<\/td><\/tr><tr><td>\u4e00\u822c\u7684\u306a\u57fa\u677f\u5b9f\u88c5\u9762\u7a4d<\/td><td>\u5927\u91cf<\/td><td>\u4e2d\u7a0b\u5ea6<\/td><td>\u30d4\u30f3\u6570\u304c\u5c11\u306a\u3044\u5834\u5408\u306f\u5927\u304d\u3081<\/td><td>I\/O\u6570\u304c\u591a\u3044\u5834\u5408\u306f\u975e\u5e38\u306b\u5927\u304d\u3044<\/td><\/tr><tr><td>\u96fb\u6c17\u7684\u306a\u7d4c\u8def<\/td><td>\u77ed\u3044<\/td><td>\u30ea\u30fc\u30c9\u304c\u5f62\u6210\u3055\u308c\u3066\u3044\u308b\u5206\u3001\u9577\u3044<\/td><td>\u77ed\u3044<\/td><td>\u77ed\u3044\uff08\u30a2\u30ec\u30a4\u69cb\u6210\u306b\u3088\u308b\uff09<\/td><\/tr><tr><td>\u71b1\u7d4c\u8def<\/td><td>\u9732\u51fa\u30d1\u30c3\u30c9\u3092\u5099\u3048\u308b\u3053\u3068\u304c\u591a\u3044<\/td><td>\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u3088\u308b<\/td><td>\u9732\u51fa\u30d1\u30c3\u30c9\u3092\u5099\u3048\u308b\u3053\u3068\u304c\u591a\u3044<\/td><td>\u30dc\u30fc\u30eb\u3001\u30b5\u30fc\u30de\u30eb\u30dc\u30fc\u30eb\u3001\u305d\u306e\u4ed6\u306e\u69cb\u9020\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u304c\u3042\u308b<\/td><\/tr><tr><td>\u306f\u3093\u3060\u63a5\u5408\u90e8\u306e\u8996\u8a8d\u6027<\/td><td>\u9650\u5b9a\u7684\u3002X\u7dda\u691c\u67fb\u304c\u3088\u304f\u7528\u3044\u3089\u308c\u308b<\/td><td>\u76ee\u8996\u3057\u3084\u3059\u3044<\/td><td>\u9650\u5b9a\u7684<\/td><td>\u96a0\u308c\u3066\u3044\u308b\u305f\u3081\u3001X\u7dda\u691c\u67fb\u304c\u4e00\u822c\u7684<\/td><\/tr><tr><td>\u624b\u4f5c\u696d\u3067\u306e\u8a66\u4f5c<\/td><td>\u96e3\u3057\u3044<\/td><td>\u6bd4\u8f03\u7684\u5bb9\u6613<\/td><td>\u96e3\u3057\u3044<\/td><td>\u975e\u5e38\u306b\u96e3\u3057\u3044<\/td><\/tr><tr><td>\u6700\u9069\u306a\u7528\u9014<\/td><td>\u5c0f\u578b\u3067\u3001I\/O\u6570\u304c\u4e2d\u7a0b\u5ea6\u307e\u3067\u306e\u8a2d\u8a08\u3001\u71b1\u5bfe\u7b56\u307e\u305f\u306f\u9ad8\u5468\u6ce2\u8a2d\u8a08<\/td><td>\u30a2\u30af\u30bb\u30b9\u3057\u3084\u3059\u3044\u30ea\u30fc\u30c9\u3068\u5bb9\u6613\u306a\u691c\u67fb\u3092\u91cd\u8996\u3059\u308b\u8a2d\u8a08<\/td><td>\u7aef\u5b50\u304c2\u8fba\u306b\u914d\u7f6e\u3055\u308c\u305f\u5c0f\u578b\u90e8\u54c1<\/td><td>I\/O\u6570\u306e\u591a\u3044\u30d7\u30ed\u30bb\u30c3\u30b5\u3001FPGA\u3001\u30e1\u30e2\u30ea\u3001\u304a\u3088\u3073\u9ad8\u5bc6\u5ea6\u30c7\u30d0\u30a4\u30b9<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3069\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3082\u3001\u5e38\u306b\u4ed6\u3088\u308a\u512a\u308c\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002I\/O\u6570\u3001\u57fa\u677f\u9762\u7a4d\u3001\u6d88\u8cbb\u96fb\u529b\u3001\u4fe1\u53f7\u6027\u80fd\u3001\u691c\u67fb\u8981\u4ef6\u3001\u5b9f\u88c5\u80fd\u529b\u3001\u30ea\u30ef\u30fc\u30af\u65b9\u91dd\u3001\u5165\u624b\u6027\u3001\u304a\u3088\u3073\u7dcf\u30b3\u30b9\u30c8\u306b\u57fa\u3065\u3044\u3066\u9078\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">QFN\u306ePCB\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u3068\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u6b63\u78ba\u306a\u30d1\u30c3\u30b1\u30fc\u30b8\u56f3\u9762\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u88fd\u54c1\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u540d\u3060\u3051\u3092\u3082\u3068\u306b\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u3092\u4f5c\u6210\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u300cQFN-32\u300d\u3068\u8868\u793a\u3055\u308c\u305f\u90e8\u54c1\u3067\u3082\u3001\u30dc\u30c7\u30a3\u30b5\u30a4\u30ba\u3001\u30d4\u30c3\u30c1\u3001\u7aef\u5b50\u9577\u3001\u9732\u51fa\u30d1\u30c3\u30c9\u306e\u5bf8\u6cd5\u3001\u307e\u305f\u306f1\u756a\u30d4\u30f3\u306e\u8868\u793a\u304c\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e1\u30fc\u30ab\u30fc\u306e\u6b63\u5f0f\u306a\u90e8\u54c1\u756a\u53f7<\/li>\n\n\n\n<li>\u30d1\u30c3\u30b1\u30fc\u30b8\u30b3\u30fc\u30c9\u3068\u6539\u8a02\u7248<\/li>\n\n\n\n<li>\u30dc\u30c7\u30a3\u5bf8\u6cd5\u3068\u516c\u5dee<\/li>\n\n\n\n<li>\u7aef\u5b50\u6570\u3001\u30d4\u30c3\u30c1\u3001\u5e45\u3001\u9577\u3055<\/li>\n\n\n\n<li>\u9732\u51fa\u30d1\u30c3\u30c9\u306e\u30b5\u30a4\u30ba\u3068\u96fb\u6c17\u7684\u306a\u63a5\u7d9a\u5148<\/li>\n\n\n\n<li>\u63a8\u5968PCB\u30e9\u30f3\u30c9\u30d1\u30bf\u30fc\u30f3<\/li>\n\n\n\n<li>\u63a8\u5968\u3055\u308c\u308b\u30bd\u30eb\u30c0\u30fc\u30de\u30b9\u30af\u304a\u3088\u3073\u30da\u30fc\u30b9\u30c8\u30de\u30b9\u30af\u306e\u958b\u53e3\u90e8<\/li>\n\n\n\n<li>1\u756a\u30d4\u30f3\u306e\u4f4d\u7f6e\u3068\u90e8\u54c1\u306e\u56de\u8ee2\u65b9\u5411<\/li>\n\n\n\n<li>\u6e7f\u5ea6\u611f\u5ea6\u3068\u30ea\u30d5\u30ed\u30fc\u9650\u754c<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306b\u6b63\u5f0f\u306a\u63a8\u5968\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u3067\u306f\u306a\u304f\u30ec\u30a4\u30a2\u30a6\u30c8\u4f8b\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u89e3\u91c8\u306b\u3064\u3044\u3066\u90e8\u54c1\u30e1\u30fc\u30ab\u30fc\u304a\u3088\u3073\u5b9f\u88c5\u696d\u8005\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. 1\u756a\u30d4\u30f3\u3068\u5411\u304d\u3092\u691c\u8a3c\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QFN\u3067\u306f\u3001\u70b9\u3001\u9762\u53d6\u308a\u3001\u5207\u308a\u6b20\u304d\u3001\u307e\u305f\u306f\u305d\u306e\u4ed6\u306e\u76ee\u7acb\u3061\u306b\u304f\u3044\u5370\u30671\u756a\u30d4\u30f3\u3092\u793a\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306e\u5e95\u9762\u56f3\u307e\u305f\u306f\u4e0a\u9762\u56f3\u306e\u8868\u8a18\u3092ECAD\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u3068\u7167\u5408\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6b21\u306b\u3001\u56de\u8def\u56f3\u306e\u30d4\u30f3\u756a\u53f7\u3001\u9285\u7b94\u30d1\u30c3\u30c9\u3001\u30b7\u30eb\u30af\u30b9\u30af\u30ea\u30fc\u30f3\u3001\u5b9f\u88c5\u56f3\u3001\u91cd\u5fc3\u306e\u56de\u8ee2\u89d2\u5ea6\u3001\u304a\u3088\u3073\u90e8\u54c1\u642d\u8f09\u30c7\u30fc\u30bf\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u72ec\u7acb\u3057\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u30ec\u30d3\u30e5\u30fc\u306f\u3001\u5411\u304d\u3092\u9006\u306b\u3057\u305f\u90e8\u54c1\u3092\u91cf\u7523\u5f8c\u306b\u4ea4\u63db\u3059\u308b\u8cbb\u7528\u3068\u6bd4\u3079\u308c\u3070\u3001\u308f\u305a\u304b\u306a\u30b3\u30b9\u30c8\u3067\u6e08\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u5916\u5468\u30d1\u30c3\u30c9\u3068\u306f\u3093\u3060\u30de\u30b9\u30af\u3092\u4e00\u4f53\u3067\u8a2d\u8a08\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QFN\u306e\u5916\u5468\u7aef\u5b50\u306b\u306f\u3001\u9285\u7b94\u30e9\u30f3\u30c9\u3088\u308a\u3082\u30de\u30b9\u30af\u958b\u53e3\u90e8\u3092\u5927\u304d\u304f\u3057\u3066\u306f\u3093\u3060\u304c\u30e9\u30f3\u30c9\u306e\u7e01\u307e\u3067\u6fe1\u308c\u5e83\u304c\u308b\u3088\u3046\u306b\u3067\u304d\u308b\u305f\u3081\u3001\u975e\u30bd\u30eb\u30c0\u30fc\u30de\u30b9\u30af\u5b9a\u7fa9\u30d1\u30c3\u30c9\u304c\u4e00\u822c\u306b\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30d5\u30a1\u30a4\u30f3\u30d4\u30c3\u30c1\u8a2d\u8a08\u3067\u306f\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30bd\u30eb\u30c0\u30fc\u30de\u30b9\u30af\u306e\u30a6\u30a7\u30d6\u3092\u8a2d\u3051\u308b\u4f59\u5730\u304c\u306a\u3044\u5834\u5408\u3001\u8907\u6570\u30d1\u30c3\u30c9\u306b\u307e\u305f\u304c\u308b\u958b\u53e3\u90e8\u3084\u6e9d\u72b6\u306e\u30de\u30b9\u30af\u958b\u53e3\u90e8\u304c\u5fc5\u8981\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002Analog Devices\u306f\u30010.4 mm\u30d4\u30c3\u30c1\u306e\u90e8\u54c1\u3068\u3001\u305d\u308c\u3088\u308a\u7c97\u3044\u30d4\u30c3\u30c1\u306e\u90e8\u54c1\u306b\u304a\u3051\u308b\u3053\u306e\u9055\u3044\u3092\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002 <a href=\"https:\/\/www.analog.com\/en\/resources\/app-notes\/an-772.html\">Analog Devices AN-772<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9285\u7b94\u3001\u30bd\u30eb\u30c0\u30fc\u30de\u30b9\u30af\u3001\u30da\u30fc\u30b9\u30c8\u30de\u30b9\u30af\u3001\u88fd\u9020\u6642\u306e\u4f4d\u7f6e\u5408\u308f\u305b\u7cbe\u5ea6\u3001\u304a\u3088\u3073\u5b9f\u88c5\u696d\u8005\u306e\u80fd\u529b\u3092\u3001\u3072\u3068\u3064\u306e\u30b7\u30b9\u30c6\u30e0\u3068\u3057\u3066\u8003\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u7406\u8ad6\u4e0a\u306e\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u5f62\u5f0f\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u3060\u3051\u306b\u3001\u30de\u30b9\u30af\u30c0\u30e0\u3092\u57fa\u677f\u30e1\u30fc\u30ab\u30fc\u306e\u5b9f\u8a3c\u6e08\u307f\u306e\u88fd\u9020\u9650\u754c\u3088\u308a\u72ed\u304f\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. \u9732\u51fa\u30d1\u30c3\u30c9\u3092\u6b63\u3057\u3044\u30cd\u30c3\u30c8\u306b\u63a5\u7d9a\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306e\u30cd\u30c3\u30c8\u5272\u308a\u5f53\u3066\u3068\u30ec\u30a4\u30a2\u30a6\u30c8\u6307\u793a\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u30d1\u30c3\u30c9\u304c\u30b0\u30e9\u30a6\u30f3\u30c9\u306e\u5834\u5408\u306f\u3001\u4f4e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u7d4c\u8def\u3067\u610f\u56f3\u3057\u305f\u30b0\u30e9\u30a6\u30f3\u30c9\u69cb\u9020\u306b\u63a5\u7d9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u30ce\u30fc\u30c9\u307e\u305f\u306f\u96fb\u6e90\u306e\u5834\u5408\u306f\u3001\u30b0\u30e9\u30a6\u30f3\u30c9\u30d7\u30ec\u30fc\u30f3\u3078\u306e\u610f\u56f3\u3057\u306a\u3044\u77ed\u7d61\u3092\u9632\u304e\u3001\u96a3\u63a5\u5c64\u3078\u306e\u30ce\u30a4\u30ba\u7d50\u5408\u3082\u8003\u616e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e1\u30fc\u30ab\u30fc\u304c\u660e\u793a\u7684\u306b\u8a31\u53ef\u3057\u3066\u3044\u306a\u3044\u9650\u308a\u3001\u9732\u51fa\u30d1\u30c3\u30c9\u306e\u4e0b\u306b\u7121\u95a2\u4fc2\u306a\u4fe1\u53f7\u3092\u914d\u7dda\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u30d1\u30c3\u30c9\u306b\u306f\u3001\u9285\u7b94\u3092\u5168\u9762\u306b\u8a2d\u3051\u308b\u3001\u9285\u7b94\u3092\u5206\u5272\u3059\u308b\u3001\u7d76\u7e01\u3059\u308b\u3001\u307e\u305f\u306f\u7279\u5b9a\u306e\u63a5\u7d9a\u30d1\u30bf\u30fc\u30f3\u3092\u63a1\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. \u30b5\u30fc\u30de\u30eb\u30d3\u30a2\u30a2\u30ec\u30a4\u3092\u8a2d\u8a08\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b5\u30fc\u30de\u30eb\u30d3\u30a2\u306f\u3001\u9732\u51fa\u30d1\u30c3\u30c9\u304b\u3089\u4ed6\u306e\u9285\u5c64\u3078\u71b1\u3068\u96fb\u6d41\u3092\u4f1d\u3048\u307e\u3059\u3002\u30d3\u30a2\u306e\u6570\u3001\u4ed5\u4e0a\u304c\u308a\u7a74\u5f84\u3001\u30d4\u30c3\u30c1\u3001\u3081\u3063\u304d\u3001\u5145\u586b\u3001\u30ad\u30e3\u30c3\u30d7\u51e6\u7406\u3001\u63a5\u7d9a\u65b9\u6cd5\u306f\u3001\u71b1\u6027\u80fd\u3068\u306f\u3093\u3060\u4ed8\u3051\u306e\u6319\u52d5\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30ce\u30fc\u30c8\u3067\u306f\u3001\u76f4\u5f84\u7d040.3 mm\u306e\u30d3\u30a2\u3092\u7d041.0\uff5e1.2 mm\u9593\u9694\u3067\u914d\u7f6e\u3059\u308b\u4f8b\u304c\u3088\u304f\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u8a2d\u8a08\u30eb\u30fc\u30eb\u3068\u3057\u3066\u4e00\u5f8b\u306b\u9069\u7528\u3067\u304d\u308b\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u3042\u304f\u307e\u3067\u521d\u671f\u691c\u8a0e\u7528\u306e\u4f8b\u3067\u3059\u3002TI\u3001NXP\u3001Analog Devices\u3082\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u3084\u88fd\u9020\u30d7\u30ed\u30bb\u30b9\u306e\u6761\u4ef6\u306b\u5fdc\u3058\u305f\u7570\u306a\u308b\u30c6\u30f3\u30c8\u3001\u30d7\u30e9\u30b0\u3001\u30bd\u30eb\u30c0\u30fc\u30de\u30b9\u30af\u306e\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002\u9069\u5207\u306a\u65b9\u6cd5\u306f\u3001\u90e8\u54c1\u3001PCB\u306e\u539a\u3055\u3001\u9285\u7b94\u306e\u539a\u3055\u3001\u71b1\u76ee\u6a19\u3001\u306f\u3093\u3060\u4ed8\u3051\u30d7\u30ed\u30bb\u30b9\u3001\u57fa\u677f\u88fd\u9020\u80fd\u529b\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002 <a href=\"https:\/\/www.ti.com\/lit\/pdf\/sloa122\">TI QFN\u30ec\u30a4\u30a2\u30a6\u30c8\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/a> \u305d\u3057\u3066 <a href=\"https:\/\/www.nxp.com\/docs\/en\/application-note\/AN2467.pdf\">NXP PwrQFN\u5b9f\u88c5\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d3\u30a2\u30fb\u30a4\u30f3\u30fb\u30d1\u30c3\u30c9\u8a2d\u8a08\u3067\u306f\u3001\u30d3\u30a2\u3092\u5145\u586b\u30fb\u30ad\u30e3\u30c3\u30d7\u3059\u308b\u304b\u3001\u30d7\u30e9\u30b0\u3059\u308b\u304b\u3001\u30c6\u30f3\u30c8\u3059\u308b\u304b\u3001\u3042\u308b\u3044\u306f\u958b\u653e\u72b6\u614b\u306b\u3059\u308b\u304b\u3092\u3001\u57fa\u677f\u88fd\u9020\u696d\u8005\u304a\u3088\u3073\u5b9f\u88c5\u696d\u8005\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5927\u304d\u3059\u304e\u308b\u958b\u653e\u30d3\u30a2\u306f\u3001\u9732\u51fa\u30d1\u30c3\u30c9\u63a5\u5408\u90e8\u304b\u3089\u306f\u3093\u3060\u3092\u5438\u3044\u53d6\u3063\u305f\u308a\u3001\u53cd\u5bfe\u9762\u306b\u7a81\u8d77\u3092\u751f\u3058\u3055\u305b\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. \u5927\u304d\u306a\u30d1\u30c3\u30c9\u306b\u306f\u30a6\u30a3\u30f3\u30c9\u30a6\u30da\u30fc\u30f3\u578b\u306e\u30b9\u30c6\u30f3\u30b7\u30eb\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9732\u51fa\u30d1\u30c3\u30c9\u5168\u4f53\u306b\u5927\u304d\u306a\u4e00\u3064\u306e\u9818\u57df\u3067\u30bd\u30eb\u30c0\u30fc\u30da\u30fc\u30b9\u30c8\u3092\u5370\u5237\u3059\u308b\u3068\u3001\u30da\u30fc\u30b9\u30c8\u306e\u5857\u5e03\u91cf\u304c\u591a\u304f\u306a\u308a\u3059\u304e\u305f\u308a\u3001\u30d5\u30e9\u30c3\u30af\u30b9\u30ac\u30b9\u304c\u9589\u3058\u8fbc\u3081\u3089\u308c\u305f\u308a\u3001\u90e8\u54c1\u304c\u6d6e\u3044\u305f\u308a\u3001\u30d6\u30ea\u30c3\u30b8\u304c\u767a\u751f\u3057\u3084\u3059\u304f\u306a\u3063\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u8907\u6570\u306e\u5c0f\u3055\u306a\u958b\u53e3\u90e8\u306b\u5206\u5272\u3057\u305f\u300c\u30a6\u30a3\u30f3\u30c9\u30a6\u30da\u30fc\u30f3\u300d\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u3046\u3068\u3001\u30da\u30fc\u30b9\u30c8\u91cf\u3092\u8abf\u6574\u3057\u3001\u30ac\u30b9\u306e\u629c\u3051\u9053\u3092\u78ba\u4fdd\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e1\u30fc\u30ab\u30fc\u306e\u30ac\u30a4\u30c0\u30f3\u30b9\u3067\u306f\u3001\u4e00\u822c\u306b <strong>\u30da\u30fc\u30b9\u30c8\u88ab\u8986\u738750\uff5e80%<\/strong> \u304c\u9732\u51fa\u30d1\u30c3\u30c9\u306e\u521d\u671f\u691c\u8a0e\u7bc4\u56f2\u3068\u3057\u3066\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u6700\u7d42\u7684\u306a\u30b9\u30c6\u30f3\u30b7\u30eb\u8a2d\u8a08\u306f\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u3001\u30da\u30fc\u30b9\u30c8\u3001\u30b9\u30c6\u30f3\u30b7\u30eb\u539a\u3001\u958b\u53e3\u9762\u7a4d\u6bd4\u3001\u57fa\u677f\u8868\u9762\u4ed5\u4e0a\u3052\u3001\u30ea\u30d5\u30ed\u30fc\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306b\u5408\u308f\u305b\u3066\u8abf\u6574\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/qfn-stencil-design-showing.webp\" alt=\"QFN stencil design showing windowpane aperture array pattern for thermal pad to prevent solder voiding\" class=\"wp-image-23540\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/qfn-stencil-design-showing.webp 1000w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/qfn-stencil-design-showing-300x200.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/qfn-stencil-design-showing-768x512.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/qfn-stencil-design-showing-18x12.webp 18w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">7. \u71b1\u306e\u6d41\u308c\u3092\u8003\u616e\u3057\u3066\u9285\u7b94\u3092\u8a2d\u8a08\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b5\u30fc\u30de\u30eb\u30d3\u30a2\u306f\u3001\u5341\u5206\u306a\u9285\u7b94\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u306a\u3051\u308c\u3070\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u305b\u3093\u3002\u9069\u5207\u306a\u5185\u90e8\u5c64\u307e\u305f\u306f\u5e95\u9762\u5c64\u306e\u30d7\u30ec\u30fc\u30f3\u3092\u4f7f\u7528\u3057\u3001\u71b1\u7684\u306b\u9069\u5207\u306a\u7b87\u6240\u3067\u306f\u30d3\u30a2\u3092\u30bd\u30ea\u30c3\u30c9\u63a5\u7d9a\u3057\u3001\u5341\u5206\u306a\u9285\u7b94\u306e\u62e1\u6563\u9762\u7a4d\u3092\u78ba\u4fdd\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u306e\u3046\u3048\u3067\u3001\u90e8\u54c1\u306e\u71b1\u30c7\u30fc\u30bf\u3001\u96fb\u529b\u640d\u5931\u306e\u8a08\u7b97\u3001\u5b9f\u969b\u306e\u52d5\u4f5c\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u8a2d\u8a08\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306b\u8a18\u8f09\u3055\u308c\u305f\u63a5\u5408\u90e8\u30fb\u5468\u56f2\u9593\u71b1\u62b5\u6297\u5024\u3092\u3001\u8a66\u9a13\u57fa\u677f\u306e\u6761\u4ef6\u3092\u78ba\u8a8d\u305b\u305a\u306b\u8a2d\u8a08\u8a08\u7b97\u3078\u305d\u306e\u307e\u307e\u4f7f\u7528\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u57fa\u677f\u306e\u30b9\u30bf\u30c3\u30af\u30a2\u30c3\u30d7\u3001\u9285\u7b94\u3001\u6c17\u6d41\u3001\u7b50\u4f53\u306f\u3001\u8a66\u9a13\u6761\u4ef6\u3068\u5927\u304d\u304f\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8. \u91cd\u8981\u306a\u90e8\u54c1\u3068\u914d\u7dda\u3092\u8fd1\u304f\u306b\u914d\u7f6e\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30ab\u30c3\u30d7\u30ea\u30f3\u30b0\u30b3\u30f3\u30c7\u30f3\u30b5\u3001\u30d6\u30fc\u30c8\u30b9\u30c8\u30e9\u30c3\u30d7\u90e8\u54c1\u3001\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u56de\u8def\u3001\u767a\u632f\u5b50\u3001\u6574\u5408\u56de\u8def\u3001\u96fb\u6d41\u691c\u51fa\u914d\u7dda\u306f\u3001\u30c7\u30d0\u30a4\u30b9\u306e\u6a5f\u80fd\u5225\u30ec\u30a4\u30a2\u30a6\u30c8\u30ac\u30a4\u30c0\u30f3\u30b9\u306b\u5f93\u3063\u3066\u914d\u7f6e\u3057\u3066\u304f\u3060\u3055\u3044\u3002QFN\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u304c\u5c0f\u3055\u304f\u3066\u3082\u3001\u9577\u3044\u914d\u7dda\u3084\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u304c\u9069\u5207\u3067\u306a\u3044PCB\u914d\u7dda\u3092\u88dc\u3046\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u96fb\u6e90\u3084RF\u30c7\u30d0\u30a4\u30b9\u3067\u306f\u3001\u63a8\u5968\u8a55\u4fa1\u30dc\u30fc\u30c9\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u305d\u306e\u307e\u307e\u7121\u6761\u4ef6\u306b\u30b3\u30d4\u30fc\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u91cf\u7523\u7528\u306e\u30b9\u30bf\u30c3\u30af\u30a2\u30c3\u30d7\u3084\u8a2d\u8a08\u30eb\u30fc\u30eb\u306b\u7167\u3089\u3057\u3066\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">QFN\u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u3069\u306e\u3088\u3046\u306b\u5b9f\u88c5\u3055\u308c\u308b\u304b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u306f\u3093\u3060\u30da\u30fc\u30b9\u30c8\u5370\u5237<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30c6\u30f3\u30ec\u30b9\u88fd\u30b9\u30c6\u30f3\u30b7\u30eb\u3092\u4f7f\u3063\u3066\u3001\u5468\u8fba\u30d1\u30c3\u30c9\u3068\u9732\u51fa\u30d1\u30c3\u30c9\u9818\u57df\u306b\u30bd\u30eb\u30c0\u30fc\u30da\u30fc\u30b9\u30c8\u3092\u5857\u5e03\u3057\u307e\u3059\u3002\u958b\u53e3\u90e8\u306e\u30b5\u30a4\u30ba\u3001\u30b9\u30c6\u30f3\u30b7\u30eb\u539a\u3001\u58c1\u9762\u4ed5\u4e0a\u3052\u3001\u4f4d\u7f6e\u5408\u308f\u305b\u306b\u3088\u3063\u3066\u30da\u30fc\u30b9\u30c8\u91cf\u304c\u6c7a\u307e\u308a\u307e\u3059\u3002\u30d1\u30c3\u30b1\u30fc\u30b8\u304c\u63a5\u5408\u90e8\u3092\u8986\u3063\u305f\u5f8c\u3067\u306f\u5370\u5237\u4e0d\u826f\u306e\u8a3a\u65ad\u304c\u96e3\u3057\u304f\u306a\u308b\u305f\u3081\u3001\u30bd\u30eb\u30c0\u30fc\u30da\u30fc\u30b9\u30c8\u691c\u67fb\u304c\u6709\u52b9\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30d4\u30c3\u30af\u30a2\u30f3\u30c9\u30d7\u30ec\u30fc\u30b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u81ea\u52d5\u88c5\u7f6e\u306f\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u672c\u4f53\u306e\u8a8d\u8b58\u3001\u30d1\u30c3\u30c9\u306e\u8a8d\u8b58\u3001\u307e\u305f\u306f\u305d\u306e\u4e21\u65b9\u3092\u4f7f\u3063\u3066QFN\u3092\u914d\u7f6e\u3057\u307e\u3059\u3002\u30d5\u30a1\u30a4\u30f3\u30d4\u30c3\u30c1\u307e\u305f\u306f\u9ad8\u7cbe\u5ea6\u304c\u6c42\u3081\u3089\u308c\u308b\u5b9f\u88c5\u3067\u306f\u3001\u30ed\u30fc\u30ab\u30eb\u30d5\u30a3\u30c7\u30e5\u30fc\u30b7\u30e3\u30eb\u306b\u3088\u3063\u3066\u4f4d\u7f6e\u5408\u308f\u305b\u306e\u7cbe\u5ea6\u3092\u9ad8\u3081\u3089\u308c\u307e\u3059\u3002\u9069\u5207\u306a\u91cd\u5fc3\u3001\u56de\u8ee2\u89d2\u5ea6\u3001\u30ce\u30ba\u30eb\u3001\u5438\u7740\u9ad8\u3055\u3001\u914d\u7f6e\u8377\u91cd\u3092\u5b9f\u88c5\u30c7\u30fc\u30bf\u3067\u5b9a\u7fa9\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30ea\u30d5\u30ed\u30fc\u306f\u3093\u3060\u4ed8\u3051<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u57fa\u677f\u3092\u5236\u5fa1\u3055\u308c\u305f\u6e29\u5ea6\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306b\u901a\u3057\u3001\u30d5\u30e9\u30c3\u30af\u30b9\u3092\u6d3b\u6027\u5316\u3055\u305b\u3001\u306f\u3093\u3060\u3092\u6eb6\u878d\u3057\u3066\u63a5\u5408\u90e8\u3092\u5f62\u6210\u3057\u307e\u3059\u3002\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u90e8\u54c1\u306e\u6e29\u5ea6\u4e0a\u9650\u3068\u5438\u6e7f\u6761\u4ef6\u3092\u5b88\u308a\u306a\u304c\u3089\u3001\u30bd\u30eb\u30c0\u30fc\u30da\u30fc\u30b9\u30c8\u4f9b\u7d66\u5143\u306e\u30ac\u30a4\u30c0\u30f3\u30b9\u306b\u5f93\u3063\u3066\u8a2d\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5225\u306e\u57fa\u677f\u5411\u3051\u306e\u7089\u8a2d\u5b9a\u3092\u6d41\u7528\u3059\u308b\u3088\u308a\u3001\u5b9f\u969b\u306e\u88fd\u54c1\u3067\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u6e2c\u5b9a\u3059\u308b\u307b\u3046\u304c\u78ba\u5b9f\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u691c\u67fb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u691c\u67fb\u306b\u306f\u3001\u6b21\u306e\u65b9\u6cd5\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u90e8\u54c1\u642d\u8f09\u524d\u306e\u30bd\u30eb\u30c0\u30fc\u30da\u30fc\u30b9\u30c8\u691c\u67fb<\/li>\n\n\n\n<li>\u90e8\u54c1\u306e\u4f4d\u7f6e\u3068\u76ee\u8996\u53ef\u80fd\u306a\u7aef\u90e8\u306e\u81ea\u52d5\u5149\u5b66\u691c\u67fb<\/li>\n\n\n\n<li>\u96a0\u308c\u305f\u30aa\u30fc\u30d7\u30f3\u3001\u30d6\u30ea\u30c3\u30b8\u3001\u30dc\u30a4\u30c9\u3001\u306f\u3093\u3060\u5206\u5e03\u3092\u78ba\u8a8d\u3059\u308bX\u7dda\u691c\u67fb<\/li>\n\n\n\n<li>\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u96fb\u6c17\u691c\u67fb\u307e\u305f\u306f\u30d0\u30a6\u30f3\u30c0\u30ea\u30b9\u30ad\u30e3\u30f3\u691c\u67fb<\/li>\n\n\n\n<li>\u6a5f\u80fd\u30c6\u30b9\u30c8<\/li>\n\n\n\n<li>\u5de5\u7a0b\u8a8d\u5b9a\u307e\u305f\u306f\u6545\u969c\u8abf\u67fb\u306e\u305f\u3081\u306e\u65ad\u9762\u89e3\u6790<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6a19\u6e96\u7684\u306aQFN\u3067\u306f\u3001\u30d5\u30a3\u30ec\u30c3\u30c8\u306e\u3064\u307e\u5148\u90e8\u3092\u5b8c\u5168\u306b\u76ee\u8996\u3059\u308b\u3053\u3068\u306f\u4e00\u822c\u306b\u3067\u304d\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u5de5\u7a0b\u306e\u76e3\u8996\u3084\u6545\u969c\u89e3\u6790\u306b\u306fX\u7dda\u304c\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 <a href=\"https:\/\/www.analog.com\/en\/resources\/app-notes\/smt-assembly-and-pcb-design-guidelines-for-maxims-standard-wirebonded-quad-flatpack.html\">Analog Devices QFN\u5b9f\u88c5\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/x-ray-inspection-view.webp\" alt=\"X-ray inspection view of QFN solder joints showing thermal pad solder voiding and pin bridging defects\" class=\"wp-image-23542\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/x-ray-inspection-view.webp 1000w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/x-ray-inspection-view-300x200.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/x-ray-inspection-view-768x512.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/09\/x-ray-inspection-view-18x12.webp 18w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">QFN\u5b9f\u88c5\u3067\u3088\u304f\u3042\u308b\u6b20\u9665\u3068\u305d\u306e\u4e88\u9632\u65b9\u6cd5<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u4e0d\u826f<\/th><th>\u8003\u3048\u3089\u308c\u308b\u539f\u56e0<\/th><th>\u4e88\u9632\u7b56<\/th><\/tr><tr><td>\u306f\u3093\u3060\u30d6\u30ea\u30c3\u30b8<\/td><td>\u30da\u30fc\u30b9\u30c8\u904e\u591a\u3001\u958b\u53e3\u90e8\u304c\u5927\u304d\u3059\u304e\u308b\u3001\u30de\u30b9\u30af\u4f4d\u7f6e\u5408\u308f\u305b\u4e0d\u826f\u3001\u914d\u7f6e\u305a\u308c<\/td><td>\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u3092\u78ba\u8a8d\u3057\u3001\u30b9\u30c6\u30f3\u30b7\u30eb\u958b\u53e3\u90e8\u3092\u7e2e\u5c0f\u307e\u305f\u306f\u5f62\u72b6\u5909\u66f4\u3057\u3001\u4f4d\u7f6e\u5408\u308f\u305b\u3068\u914d\u7f6e\u306e\u7ba1\u7406\u3092\u6539\u5584\u3059\u308b<\/td><\/tr><tr><td>\u30aa\u30fc\u30d7\u30f3\u307e\u305f\u306f\u63a5\u5408\u5f37\u5ea6\u306e\u5f31\u3044\u63a5\u5408\u90e8<\/td><td>\u30da\u30fc\u30b9\u30c8\u4e0d\u8db3\u3001\u30da\u30fc\u30b9\u30c8\u96e2\u578b\u4e0d\u826f\u3001\u9178\u5316\u3001\u57fa\u677f\u306e\u53cd\u308a\u3001\u4e0d\u9069\u5207\u306a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb<\/td><td>\u30b9\u30c6\u30f3\u30b7\u30eb\u9762\u7a4d\u6bd4\u3001\u30da\u30fc\u30b9\u30c8\u306e\u72b6\u614b\u3001\u8868\u9762\u4ed5\u4e0a\u3052\u3001\u30b3\u30d7\u30e9\u30ca\u30ea\u30c6\u30a3\u3001\u4fdd\u7ba1\u72b6\u614b\u3001\u30ea\u30d5\u30ed\u30fc\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u78ba\u8a8d\u3059\u308b<\/td><\/tr><tr><td>\u9732\u51fa\u30d1\u30c3\u30c9\u306e\u30dc\u30a4\u30c9\u904e\u591a<\/td><td>\u30da\u30fc\u30b9\u30c8\u958b\u53e3\u90e8\u304c\u5927\u304d\u3044\u3001\u30d5\u30e9\u30c3\u30af\u30b9\u306e\u30ac\u30b9\u629c\u3051\u3001\u30d3\u30a2\u3078\u306e\u306f\u3093\u3060\u5438\u3044\u8fbc\u307f\u3001\u4e0d\u9069\u5207\u306a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb<\/td><td>\u958b\u53e3\u90e8\u3092\u5206\u5272\u3057\u3001\u88ab\u8986\u7387\u3068\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u6700\u9069\u5316\u3057\u3001\u30d3\u30a2\u51e6\u7406\u3092\u898b\u76f4\u3057\u3066\u3001X\u7dda\u3067\u78ba\u8a8d\u3059\u308b<\/td><\/tr><tr><td>\u90e8\u54c1\u306e\u6d6e\u304d\u307e\u305f\u306f\u50be\u304d<\/td><td>\u4e2d\u592e\u30d1\u30c3\u30c9\u306e\u30da\u30fc\u30b9\u30c8\u904e\u591a\u3001\u307e\u305f\u306f\u306f\u3093\u3060\u91cf\u306e\u4e0d\u5747\u8861<\/td><td>\u30da\u30fc\u30b9\u30c8\u306e\u5857\u5e03\u91cf\u3092\u5747\u8861\u3055\u305b\u3001\u9732\u51fa\u30d1\u30c3\u30c9\u3078\u306e\u904e\u5270\u306a\u30da\u30fc\u30b9\u30c8\u5857\u5e03\u3092\u6e1b\u3089\u3059<\/td><\/tr><tr><td>\u30d3\u30a2\u3078\u306e\u306f\u3093\u3060\u6d41\u51fa<\/td><td>\u30d1\u30c3\u30c9\u5185\u306e\u30d3\u30a2\u304c\u5927\u304d\u3059\u304e\u308b\u3001\u307e\u305f\u306f\u958b\u653e\u3055\u308c\u3066\u3044\u308b<\/td><td>\u7ba1\u7406\u3055\u308c\u305f\u5c0f\u5f84\u30d3\u30a2\u3092\u4f7f\u7528\u3059\u308b\u304b\u3001\u5408\u610f\u3057\u305f\u30d7\u30e9\u30b0\u3001\u5145\u586b\u3001\u30ad\u30e3\u30c3\u30d7\u3001\u30c6\u30f3\u30c8\u306e\u65b9\u6cd5\u3092\u63a1\u7528\u3059\u308b<\/td><\/tr><tr><td>\u5411\u304d\u306e\u8aa4\u308a<\/td><td>\u30d4\u30f31\u30de\u30fc\u30af\u304c\u66d6\u6627\u3001\u307e\u305f\u306f\u91cd\u5fc3\u306e\u56de\u8ee2\u65b9\u5411\u304c\u8aa4\u3063\u3066\u3044\u308b<\/td><td>\u660e\u78ba\u306a\u5b9f\u88c5\u30de\u30fc\u30ad\u30f3\u30b0\u3092\u4f7f\u7528\u3057\u3001ECAD\u30d3\u30e5\u30fc\u3092\u78ba\u8a8d\u3057\u3066\u3001\u521d\u54c1\u691c\u67fb\u3092\u5b9f\u65bd\u3059\u308b<\/td><\/tr><tr><td>\u65ad\u7d9a\u7684\u306a\u71b1\u6545\u969c<\/td><td>\u9732\u51fa\u30d1\u30c3\u30c9\u306e\u63a5\u7d9a\u4e0d\u8db3\u3001\u9285\u7b94\u4e0d\u8db3\u3001\u6709\u52b9\u306a\u30d3\u30a2\u6570\u306e\u4e0d\u8db3<\/td><td>\u96fb\u529b\u640d\u5931\u3092\u518d\u8a08\u7b97\u3057\u3001\u30d1\u30c3\u30c9\uff0f\u30d3\u30a2\uff0f\u30d7\u30ec\u30fc\u30f3\u306e\u7d4c\u8def\u3092\u6539\u5584\u3057\u3066\u3001\u5b9f\u6a5f\u3067\u6e29\u5ea6\u3092\u691c\u8a3c\u3059\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">QFN\u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u3069\u306e\u3088\u3046\u306a\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306e\u8981\u4ef6\u304c\u3042\u308b\u8a2d\u8a08\u306b\u306f\u3001QFN\u304c\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c0f\u578b\u3067\u8584\u578b\u306e\u90e8\u54c1<\/li>\n\n\n\n<li>\u96fb\u6c17\u7d4c\u8def\u304c\u77ed\u304f\u3001\u30ea\u30fc\u30c9\u5bc4\u751f\u6210\u5206\u304c\u5c0f\u3055\u3044<\/li>\n\n\n\n<li>PCB\u3078\u306e\u52b9\u7387\u7684\u306a\u71b1\u4f1d\u9054<\/li>\n\n\n\n<li>\u30d5\u30eb\u30dc\u30fc\u30eb\u30b0\u30ea\u30c3\u30c9\u30a2\u30ec\u30a4\u3092\u4f7f\u308f\u305a\u306b\u3001\u4e2d\u301c\u9ad8\u5bc6\u5ea6\u306e\u7aef\u5b50\u3092\u5b9f\u73fe\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u91cf\u7523\u898f\u6a21\u3067\u306e\u81ea\u52d5SMT\u5b9f\u88c5<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306e\u3088\u3046\u306a\u5834\u5408\u306f\u3001\u5225\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u624b\u4f5c\u696d\u3067\u306e\u7d44\u307f\u7acb\u3066\u3084\u76ee\u8996\u691c\u67fb\u306e\u3057\u3084\u3059\u3055\u3092\u6700\u512a\u5148\u3059\u308b<\/li>\n\n\n\n<li>\u5b9f\u88c5\u696d\u8005\u304c\u9078\u629e\u3057\u305f\u30d4\u30c3\u30c1\u3067\u3001\u5b89\u5b9a\u3057\u305f\u642d\u8f09\u3001\u30ea\u30d5\u30ed\u30fc\u3001\u307e\u305f\u306fX\u7dda\u691c\u67fb\u3092\u884c\u3048\u306a\u3044<\/li>\n\n\n\n<li>\u73fe\u5834\u3067\u8fc5\u901f\u304b\u3064\u7c21\u5358\u306b\u4fee\u7406\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b<\/li>\n\n\n\n<li>\u5b9f\u7528\u7684\u306aQFN\u3067\u306f\u5fc5\u8981\u306aI\/O\u6570\u3092\u78ba\u4fdd\u3067\u304d\u306a\u3044<\/li>\n\n\n\n<li>\u57fa\u677f\u306e\u305f\u308f\u307f\u3001\u53b3\u3057\u3044\u6e29\u5ea6\u30b5\u30a4\u30af\u30eb\u3001\u307e\u305f\u306f\u4fe1\u983c\u6027\u8981\u4ef6\u306e\u89b3\u70b9\u304b\u3089\u3001\u8a8d\u5b9a\u6e08\u307f\u306e\u5225\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u304c\u9069\u3057\u3066\u3044\u308b<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u9078\u5b9a\u306f\u3001\u56de\u8def\u56f3\u3084\u90e8\u54c1\u4fa1\u683c\u3060\u3051\u3067\u306a\u304f\u3001PCB\u3068\u5b9f\u88c5\u5de5\u7a0b\u3082\u8003\u616e\u3057\u3066\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">QFN\u306e\u8a2d\u8a08\u30fb\u88fd\u9020\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QFN\u3092\u4f7f\u7528\u3057\u305fPCB\u3092\u30ea\u30ea\u30fc\u30b9\u3059\u308b\u524d\u306b\u3001\u6b21\u306e\u70b9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u90e8\u54c1\u306e\u6b63\u78ba\u306a\u30d1\u30c3\u30b1\u30fc\u30b8\u30b3\u30fc\u30c9\u3068\u6700\u65b0\u7248\u306e\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u305f<\/li>\n\n\n\n<li>\u9732\u51fa\u30d1\u30c3\u30c9\u304c\u653e\u71b1\u7528\u3001\u96fb\u6c17\u63a5\u7d9a\u7528\u3001\u307e\u305f\u306f\u305d\u306e\u4e21\u65b9\u3067\u3042\u308b\u304b\u3092\u78ba\u8a8d\u3057\u305f<\/li>\n\n\n\n<li>\u30d4\u30f3\u756a\u53f7\u3001\u30d4\u30f31\u306e\u4f4d\u7f6e\u3001\u30d4\u30c3\u30af\u30a2\u30f3\u30c9\u30d7\u30ec\u30fc\u30b9\u6642\u306e\u56de\u8ee2\u65b9\u5411\u3092\u78ba\u8a8d\u3057\u305f<\/li>\n\n\n\n<li>\u9285\u7b94\u3001\u30bd\u30eb\u30c0\u30fc\u30de\u30b9\u30af\u3001\u30e1\u30bf\u30eb\u30de\u30b9\u30af\u306e\u5f62\u72b6\u3092\u305d\u308c\u305e\u308c\u500b\u5225\u306b\u78ba\u8a8d\u3057\u305f<\/li>\n\n\n\n<li>PCB\u304a\u3088\u3073\u5b9f\u88c5\u696d\u8005\u3068\u3001\u30b5\u30fc\u30de\u30eb\u30d3\u30a2\u306e\u30b5\u30a4\u30ba\u3001\u30d4\u30c3\u30c1\u3001\u51e6\u7406\u65b9\u6cd5\u306b\u3064\u3044\u3066\u5408\u610f\u3057\u305f<\/li>\n\n\n\n<li>\u9732\u51fa\u30d1\u30c3\u30c9\u306b\u9069\u3057\u305f\u5206\u5272\u30da\u30fc\u30b9\u30c8\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3057\u305f<\/li>\n\n\n\n<li>\u30b9\u30c6\u30f3\u30b7\u30eb\u958b\u53e3\u90e8\u306e\u9762\u7a4d\u6bd4\u3068\u3001\u306f\u3093\u3060\u30da\u30fc\u30b9\u30c8\u306e\u629c\u3051\u3084\u3059\u3055\u3092\u78ba\u8a8d\u3057\u305f<\/li>\n\n\n\n<li>\u5fc5\u8981\u306a\u653e\u71b1\u7d4c\u8def\u3092\u78ba\u4fdd\u3059\u308b\u306e\u306b\u5341\u5206\u306a\u9285\u7b94\u3092\u8a2d\u3051\u305f<\/li>\n\n\n\n<li>\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u306f\u3093\u3060\u30da\u30fc\u30b9\u30c8\u691c\u67fb\u3001X\u7dda\u691c\u67fb\u3001\u96fb\u6c17\u8a66\u9a13\u3001\u6a5f\u80fd\u8a66\u9a13\u3092\u8a08\u753b\u3057\u305f<\/li>\n\n\n\n<li>\u9632\u6e7f\u7ba1\u7406\u3068\u88fd\u54c1\u56fa\u6709\u306e\u30ea\u30d5\u30ed\u30fc\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u5b9a\u3081\u305f<\/li>\n\n\n\n<li>\u91cf\u7523\u524d\u306b\u521d\u54c1\u3092\u88fd\u9020\u3057\u3001\u30ec\u30d3\u30e5\u30fc\u3057\u305f<\/li>\n\n\n\n<li>\u90e8\u54c1\u3068\u88fd\u54c1\u306e\u8981\u4ef6\u306b\u57fa\u3065\u3044\u3066\u3001\u30dc\u30a4\u30c9\u304a\u3088\u3073\u96a0\u308c\u305f\u306f\u3093\u3060\u63a5\u5408\u90e8\u306e\u5408\u683c\u57fa\u6e96\u3092\u5b9a\u3081\u305f<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">QFN\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u95a2\u3059\u308b\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">QFN\u306f\u4f55\u306e\u7565\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">QFN\u306f <strong>Quad Flat No-Lead<\/strong>\u306e\u7565\u3067\u3059\u3002\u300cQuad\u300d\u306f4\u8fba\u306b\u7aef\u5b50\u304c\u3042\u308b\u3053\u3068\u3092\u6307\u3057\u3001\u300cNo-Lead\u300d\u306f\u9577\u304f\u7a81\u304d\u51fa\u305f\u30ea\u30fc\u30c9\u304c\u306a\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">QFN\u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u925b\u30d5\u30ea\u30fc\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5fc5\u305a\u3057\u3082\u305d\u3046\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u300cNo-Lead\u300d\u306f\u30d1\u30c3\u30b1\u30fc\u30b8\u304b\u3089\u7a81\u304d\u51fa\u305f\u30ea\u30fc\u30c9\u304c\u306a\u3044\u3053\u3068\u3092\u8868\u3059\u3082\u306e\u3067\u3001\u6750\u6599\u306e\u7d44\u6210\u3092\u4fdd\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u90e8\u54c1\u306eRoHS\u3001\u8868\u9762\u51e6\u7406\u3001\u7269\u8cea\u9069\u5408\u6027\u306b\u95a2\u3059\u308b\u6587\u66f8\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">QFN\u3068DFN\u306f\u540c\u3058\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3044\u3044\u3048\u3002\u3069\u3061\u3089\u3082\u30d5\u30e9\u30c3\u30c8\u306a\u30ea\u30fc\u30c9\u30ec\u30b9\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3059\u304c\u3001QFN\u306f\u901a\u5e384\u8fba\u306b\u7aef\u5b50\u304c\u3042\u308a\u3001DFN\u306f\u5411\u304b\u3044\u5408\u30462\u8fba\u306b\u7aef\u5b50\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">QFN\u3068BGA\u306f\u540c\u3058\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p 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packages appear in everything from power supplies and wireless modules to sensors, microcontrollers, and automotive electronics. Their small footprint, short electrical paths, and efficient heat transfer make them an attractive alternative to larger leaded packages. However, the same underside connections that save space also make QFN footprint design, soldering, and inspection less forgiving. So, what is a QFN package, and what does a PCB designer need to know before using one? This guide explains QFN construction, common types, advantages, limitations, PCB layout requirements, assembly methods, and defect-prevention practices. Key Takeaways What Is a QFN Package? A QFN, or Quad Flat No-Lead package, is a low-profile surface-mount integrated circuit package. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":23538,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"What Are QFN Packages? 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