{"id":10535,"date":"2025-12-12T08:39:16","date_gmt":"2025-12-12T08:39:16","guid":{"rendered":"https:\/\/www.besterpcba.com\/solder-mask-expansion\/"},"modified":"2025-12-12T08:43:37","modified_gmt":"2025-12-12T08:43:37","slug":"solder-mask-expansion","status":"publish","type":"post","link":"https:\/\/www.besterpcba.com\/zh_hk\/%e9%98%bb%e7%84%8a%e8%86%9c%e6%93%b4%e5%b1%95\/","title":{"rendered":"\u710a\u818f\u963b\u710a\u81a0\u81a8\u8139\uff1a\u96b1\u5f62\u7684\u826f\u7387\u6bba\u624b"},"content":{"rendered":"<p>\u58de\u7684\u963b\u710a\u5291\u6c7a\u7b56\u6709\u5176\u7368\u7279\u7684\u6c23\u5473\u3002\u5b83\u805e\u8d77\u4f86\u50cf\u71d2\u7126\u7684\u52a9\u710a\u5291\u3001\u71b1\u7684\u805a\u91af\u4e9e\u80fa\uff0c\u4ee5\u53ca\u4e00\u500b\u9031\u516d\u4e0b\u5348\u5f4e\u8170\u5728 Mantis \u986f\u5fae\u93e1\u4e0b\u624b\u6301\u70d9\u9435\u7684\u611f\u89ba\u3002\u7576\u4f60\u5728 10 \u500d\u653e\u5927\u4e0b\u770b\u4e00\u500b QFN-32\uff0c\u770b\u5230\u6bcf\u4e00\u500b\u5f15\u8173\u90fd\u8207\u9130\u8fd1\u5f15\u8173\u6a4b\u63a5\u6642\uff0c\u4f60\u4e0d\u6703\u60f3\u5230\u512a\u96c5\u7684\u8d70\u7dda\u6216\u4fe1\u865f\u5b8c\u6574\u6027\u6a21\u64ec\u3002\u4f60\u770b\u5230\u7684\u662f\u7269\u7406\u4e0a\u7684\u5c01\u9589\u5931\u6548\u3002\u710a\u818f\u5728\u56de\u6d41\u7210\u52a0\u71b1\u5f8c\u7121\u8655\u53ef\u505c\uff0c\u5b83\u4e0b\u5782\u3001\u6ef2\u900f\u4e26\u878d\u5408\uff0c\u56e0\u70ba\u672c\u61c9\u5206\u9694\u710a\u76e4 1 \u548c\u710a\u76e4 2 \u7684\u6a5f\u68b0\u963b\u710a\u5291\u6839\u672c\u4e0d\u5b58\u5728\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/www.besterpcba.com\/wp-content\/uploads\/2025\/12\/microscopic-solder-bridge-failure.jpg\" alt=\"\u5728\u7da0\u8272\u96fb\u8def\u677f\u4e0a\u7684QFN\u6676\u7247\u7684\u9ad8\u500d\u653e\u5927\u8996\u5716\uff0c\u986f\u793a\u7194\u878d\u710a\u6599\u6a4b\u63a5\u5169\u500b\u76f8\u9130\u5f15\u8173\u4e4b\u9593\u7684\u9593\u9699\u3002\" title=\"\u5fae\u89c0\u710a\u932b\u6a4b\u63a5\u5931\u6548\"\/><figcaption class=\"wp-element-caption\">\u7d30\u9593\u8ddd\u5143\u4ef6\u4e0a\u7684\u710a\u6a4b\uff0c\u901a\u5e38\u662f\u7531\u65bc\u7f3a\u5c11\u963b\u710a\u5291\u64cb\u677f\u9020\u6210\u7684\u3002<\/figcaption><\/figure>\n<\/div>\n\n\n<p>\u4e0d\u8981\u602a\u70d9\u9435\uff0c\u4e5f\u5225\u518d\u602a\u92fc\u7db2\u3002\u9019\u662f\u6578\u64da\u554f\u984c\u6f14\u8b8a\u6210\u7684\u7269\u7406\u5669\u5922\u3002\u6839\u672c\u539f\u56e0\u5728\u65bc CAD \u8a2d\u5b9a\uff0c\u901a\u5e38\u4fdd\u6301\u5728\u300c\u5b89\u5168\u300d\u7684 4 mil \u64f4\u5f35\u9810\u8a2d\u503c\uff0c\u9019\u6084\u6084\u5730\u522a\u9664\u4e86\u7d30\u9593\u8ddd\u710a\u76e4\u9593\u7684\u963b\u710a\u5291\u9023\u63a5\u3002\u7269\u7406\u4e0d\u5728\u4e4e\u4f60\u7684\u6e32\u67d3\u6548\u679c\u3002\u5982\u679c\u64cb\u677f\u7f3a\u5931\uff0c\u710a\u6599\u5c31\u6703\u6a4b\u63a5\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"why-the-fab-house-wants-to-ruin-your-assembly\">\u70ba\u4ec0\u9ebc Fab House \u60f3\u8981\u6bc0\u6389\u4f60\u7684\u7d44\u88dd<\/h2>\n\n\n<p>\u4f60\u7684\u88f8\u677f\u88fd\u9020\u5546\u548c\u7d44\u88dd\u5546\u6709\u6839\u672c\u7684\u5229\u76ca\u885d\u7a81\u3002\u88fd\u9020\u5ee0\u5bb3\u6015\u300c\u4fb5\u5165\u300d\u3002\u5982\u679c\u4ed6\u5011\u5370\u5237\u7da0\u8272\u963b\u710a\u5c64\u7a0d\u5fae\u504f\u96e2\u76ee\u6a19\uff08\u6fd5\u819c\u5de5\u85dd\u5fc5\u7136\u6703\u767c\u751f\uff09\uff0c\u4e14\u8a72\u963b\u710a\u5291\u8986\u84cb\u5728\u9285\u710a\u76e4\u4e0a\uff0c\u4f60\u6703\u56e0\u710a\u63a5\u6027\u5dee\u800c\u62d2\u6536\u96fb\u8def\u677f\u3002\u70ba\u4e86\u907f\u514d\u5831\u5ee2\u6210\u672c\uff0c\u4ed6\u5011\u8981\u6c42\u5b89\u5168\u7de9\u885d\u3002\u4ed6\u5011\u5e0c\u671b\u4f60\u64f4\u5927\u963b\u710a\u5291\u958b\u53e3\uff0c\u5373\u4f7f\u5c0d\u4f4d\u504f\u79fb 2 \u6216 3 mil\uff0c\u958b\u53e3\u4ecd\u80fd\u907f\u958b\u710a\u76e4\u3002<\/p>\n\n\n\n<p>\u9019\u500b\u5b89\u5168\u908a\u969b\u70ba\u4ed6\u5011\u7701\u9322\uff0c\u4f46\u537b\u72a7\u7272\u4e86\u4f60\u7684\u53ef\u9760\u6027\u3002\u7576\u4f60\u5c0d 0.5mm \u9593\u8ddd\u5143\u4ef6\u61c9\u7528\u5168\u5c40\u64f4\u5f35\u898f\u5247\u2014\u2014\u6bd4\u5982\u696d\u754c\u6a19\u6e96\u7684 4 mil\uff080.1mm\uff09\u2014\u2014\u4f60\u6578\u5b78\u4e0a\u6d88\u9664\u4e86\u710a\u76e4\u9593\u7684\u6a4b\u63a5\u3002\u4f60\u7528\u6f5b\u5728\u7684\u5916\u89c0\u7f3a\u9677\uff08\u963b\u710a\u5291\u8986\u84cb\u710a\u76e4\uff09\u63db\u53d6\u4e86\u5fc5\u7136\u7684\u529f\u80fd\u7f3a\u9677\uff08\u710a\u6a4b\uff09\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u4f7f\u7528\u9810\u7b97\u88fd\u9020\u5ee0\uff0c\u4f60\u7d93\u5e38\u6703\u6536\u5230\u53ef\u6015\u7684\u300c\u5de5\u7a0b\u67e5\u8a62\u300d\u6216\u300c\u66ab\u505c\u300d\u90f5\u4ef6\u3002\u4ed6\u5011\u6703\u6a19\u8a18\u4f60\u7684\u7d30\u9593\u8ddd\u5c01\u88dd\uff0c\u8072\u7a31\u710a\u76e4\u9593\u7684\u963b\u710a\u5291\u300c\u7d30\u689d\u300d\u592a\u8584\uff0c\u7121\u6cd5\u53ef\u9760\u5370\u5237\u3002\u4ed6\u5011\u6c92\u8aaa\u8b0a\uff1b\u4ed6\u5011\u7684\u5de5\u85dd\u53ef\u80fd\u7121\u6cd5\u4fdd\u6301 3 mil \u7684\u963b\u710a\u5291\u9023\u63a5\u800c\u4e0d\u525d\u843d\u3002\u4f46\u5982\u679c\u4f60\u8b93\u4ed6\u5011\u300c\u4fee\u6b63\u300d\u800c\u5b8c\u5168\u79fb\u9664\u9023\u63a5\uff0c\u4f60\u5c31\u6388\u6b0a\u4ed6\u5011\u5728\u672c\u61c9\u662f\u7368\u7acb\u5cf6\u72c0\u7684\u5730\u65b9\u88fd\u9020\u4e00\u7247\u88f8\u9732\u9285\u5340\u3002\u4ed6\u5011\u512a\u5148\u8003\u616e\u7684\u662f\u4ed6\u5011\u7684\u826f\u7387\uff0c\u800c\u975e\u4f60\u7684\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-mechanics-of-the-dam\">\u963b\u710a\u5291\u7684\u6a5f\u5236<\/h2>\n\n\n<p>\u963b\u710a\u5291\u7684\u529f\u80fd\u4e0d\u50cf\u6cb9\u6f06\uff0c\u66f4\u50cf\u662f\u6db2\u58d3\u64cb\u677f\u3002\u5b83\u5728\u56de\u6d41\u7210\u4e2d\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u6253\u7834\u7194\u878d\u710a\u6599\u7684\u8868\u9762\u5f35\u529b\u3002\u7576\u710a\u818f\u7194\u5316\u6642\uff0c\u5b83\u6703\u60f3\u8981\u6700\u5c0f\u5316\u8868\u9762\u7a4d\u3002\u5982\u679c\u963b\u710a\u5291\u689d\u5e36\u4f4d\u65bc\u5169\u500b\u710a\u76e4\u4e4b\u9593\uff0c\u710a\u6599\u6703\u5728\u5404\u81ea\u7684\u710a\u76e4\u4e0a\u5f62\u6210\u73e0\u72c0\uff0c\u4e26\u88ab\u963b\u710a\u5291\u7246\u58c1\u9650\u5236\u3002\u9019\u5c31\u662f\u300c\u588a\u5708\u300d\u6548\u61c9\u3002\u963b\u710a\u5291\u70ba\u92fc\u7db2\u63d0\u4f9b\u5782\u76f4\u7684\u652f\u6490\u7246\uff0c\u4e26\u5f62\u6210\u710a\u6599\u7121\u6cd5\u6f64\u6fd5\u7684\u6c34\u5e73\u969c\u7919\u3002<\/p>\n\n\n\n<p>\u7576\u4f60\u79fb\u9664\u8a72\u64cb\u677f\u2014\u2014\u7121\u8ad6\u662f\u900f\u904e\u6fc0\u9032\u7684\u64f4\u5f35\u8a2d\u5b9a\u6216\u88fd\u9020\u5ee0\u9032\u884c\u300c\u7fa4\u7d44\u653e\u5bec\u300d\u2014\u2014\u4f60\u5c31\u5931\u53bb\u4e86\u5c01\u9589\u3002\u710a\u76e4\u9593\u7684\u7a7a\u9699\u8b8a\u6210\u88f8\u9732\u7684 FR4 \u57fa\u677f\u3002\u7194\u878d\u710a\u6599\u5f88\u5bb9\u6613\u6ef2\u900f\u904e\u8a72\u9593\u9699\uff0c\u5c24\u5176\u7576\u92fc\u7db2\u5b54\u5f91\u8a2d\u8a08\u662f\u57fa\u65bc\u588a\u5708\u5bc6\u5c01\u6642\u3002\u6c92\u6709\u963b\u710a\u5291\u9ad8\u5ea6\u963b\u64cb\uff0c\u710a\u6599\u5c31\u6703\u4e0b\u5782\u3002<\/p>\n\n\n\n<p>\u9019\u901a\u5e38\u662f BGA \u5143\u4ef6\u958b\u59cb\u6050\u614c\u7684\u5730\u65b9\u3002\u4f60\u53ef\u80fd\u5728 X \u5149\u4e0b\u770b\u5230\u77ed\u8def\uff0c\u4e26\u4ee5\u70ba\u710a\u818f\u91cf\u592a\u591a\u6216\u56de\u6d41\u66f2\u7dda\u592a\u71b1\u3002\u5148\u770b\u770b\u88f8\u677f\u3002\u5982\u679c BGA \u710a\u76e4\u7684\u963b\u710a\u5291\u958b\u53e3\u592a\u5927\u4ee5\u81f4\u76f8\u4e92\u63a5\u89f8\uff0c\u4f60\u5c31\u70ba\u710a\u7403\u8207\u9130\u8fd1\u710a\u7403\u878d\u5408\u5275\u9020\u4e86\u6700\u5c0f\u963b\u6297\u8def\u5f91\u3002\u975e\u963b\u710a\u5291\u5b9a\u7fa9\uff08NSMD\uff09\u710a\u76e4\u662f BGA \u7684\u6a19\u6e96\u505a\u6cd5\u4ee5\u63d0\u5347\u53ef\u9760\u6027\uff0c\u4f46\u5982\u679c\u64f4\u5f35\u904e\u5ea6\uff0c\u710a\u76e4\u5468\u570d\u7684\u300c\u8b77\u57ce\u6cb3\u300d\u5c31\u6703\u6210\u70ba\u6a4b\u63a5\u901a\u9053\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-gang-relief-trap\">\u5e6b\u6d3e\u6551\u63f4\u9677\u9631<\/h2>\n\n\n<p>\u9019\u500b\u554f\u984c\u6700\u5371\u96aa\u7684\u7248\u672c\u767c\u751f\u5728 QFN \u548c\u7d30\u9593\u8ddd\u9023\u63a5\u5668\u4e0a\u3002\u8a2d\u8a08\u5e2b\u53ad\u5026\u4e86\u8207\u300c\u6700\u5c0f\u963b\u710a\u5291\u7d30\u689d\u300d\u7684 DRC\uff08\u8a2d\u8a08\u898f\u5247\u6aa2\u67e5\uff09\u932f\u8aa4\u6297\u722d\uff0c\u5e38\u8d70\u6700\u7c21\u55ae\u7684\u8def\uff1a\u7fa4\u7d44\u653e\u5bec\u3002\u9019\u6d89\u53ca\u5728\u6574\u6392\u5f15\u8173\u4e0a\u7e6a\u88fd\u4e00\u500b\u5927\u77e9\u5f62\u7684\u963b\u710a\u5291\u958b\u53e3\u3002<\/p>\n\n\n\n<p>\u5728 Gerber \u6aa2\u8996\u5668\u4e2d\u770b\u8d77\u4f86\u5f88\u4e7e\u6de8\u3002\u5b83\u7acb\u5373\u901a\u904e\u88fd\u9020\u5ee0\u7684\u6aa2\u67e5\uff0c\u56e0\u70ba\u6c92\u6709\u7d30\u5c0f\u7684\u963b\u710a\u5291\u7d30\u689d\u9700\u8981\u5370\u5237\u3002\u4f46\u5728\u7d44\u88dd\u7dda\u4e0a\uff0c\u9019\u662f\u707d\u96e3\u3002\u6211\u898b\u904e\u56e0\u70ba\u9019\u500b\u539f\u56e0\u5831\u5ee2\u7684\u6602\u8cb4\u77fd\u6676\u7247\u6258\u76e4\u2014\u2014\u91ab\u7642\u8a2d\u5099\u539f\u578b\u4e0a\u7684 QFP-100\u3002\u7576\u4f60\u5c0d\u4e00\u6392 0.5mm \u9593\u8ddd\u5f15\u8173\u9032\u884c\u7fa4\u7d44\u653e\u5bec\u6642\uff0c\u4f60\u662f\u5728\u8981\u6c42\u710a\u6599\u7684\u8868\u9762\u5f35\u529b\u6210\u70ba\u552f\u4e00\u4fdd\u6301\u63a5\u9ede\u5206\u96e2\u7684\u529b\u91cf\u3002\u9019\u5f88\u5c11\u594f\u6548\u3002\u710a\u6599\u6703\u805a\u96c6\u5728\u4e00\u8d77\uff0c\u6700\u5f8c\u5f62\u6210\u4e00\u689d\u5408\u91d1\u689d\u77ed\u63a5\u5341\u500b\u5f15\u8173\u3002<\/p>\n\n\n\n<p>\u9019\u7a2e\u60c5\u6cc1\u4e0b\u7684\u624b\u5de5\u8fd4\u5de5\u975e\u5e38\u8271\u96e3\u3002\u4f60\u5fc5\u9808\u5438\u8d70\u6240\u6709\u710a\u6599\uff0c\u7528\u9152\u7cbe\u6e05\u6f54\u5340\u57df\uff0c\u4e26\u5617\u8a66\u5728\u6c92\u6709\u963b\u710a\u5291\u64cb\u677f\u5f15\u5c0e\u7684\u60c5\u6cc1\u4e0b\u62d6\u710a\u65b0\u63a5\u9ede\u3002\u9019\u6703\u628a\u4e00\u500b $5 \u96fb\u8def\u677f\u7d44\u88dd\u8b8a\u6210\u4e00\u500b $50 \u7684\u8fd4\u5de5\u9805\u76ee\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-ldi-threshold\">LDI \u95be\u503c<\/h2>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/www.besterpcba.com\/wp-content\/uploads\/2025\/12\/laser-direct-imaging-process.jpg\" alt=\"\u88fd\u9020\u6a5f\u5668\u7684\u7279\u5beb\uff0c\u4f7f\u7528\u7d2b\u8272\u96f7\u5c04\u675f\u6383\u63cf\u7da0\u8272\u5370\u5237\u96fb\u8def\u677f\u4e0a\u7684\u5716\u6848\u3002\" title=\"\u96f7\u5c04\u76f4\u63a5\u6210\u50cf\u88fd\u9020\"\/><figcaption class=\"wp-element-caption\">\u96f7\u5c04\u76f4\u63a5\u6210\u50cf\uff08LDI\uff09\u4ee5\u9ad8\u7cbe\u5ea6\u56fa\u5316\u906e\u7f69\uff0c\u6d88\u9664\u4e86\u5c0d\u5927\u5b89\u5168\u908a\u754c\u7684\u9700\u6c42\u3002<\/figcaption><\/figure>\n<\/div>\n\n\n<p>\u4f60\u4e0d\u80fd\u53ea\u662f\u4e00\u76f4\u7e2e\u5c0f\u7db2\u683c\uff1b\u6700\u7d42\u6750\u6599\u6703\u7269\u7406\u5931\u6548\u3002\u771f\u6b63\u7684\u89e3\u6c7a\u65b9\u6848\u662f\u70ba\u7cbe\u5ea6\u4ed8\u8cbb\u3002\u50b3\u7d71\u7684\u5149\u5f71\u50cf\u5de5\u85dd\u9700\u8981\u90a3\u500b\u8aa4\u5dee\u56e0\u5b50\u3002\u96f7\u5c04\u76f4\u63a5\u6210\u50cf\uff08LDI\uff09\u6539\u8b8a\u4e86\u8a08\u7b97\u65b9\u5f0f\u3002LDI \u4e0d\u4f7f\u7528\u5e95\u7247\uff0c\u800c\u662f\u4f7f\u7528\u96f7\u5c04\u76f4\u63a5\u5728\u96fb\u8def\u677f\u4e0a\u56fa\u5316\u906e\u7f69\uff0c\u4e26\u53c3\u8003\u96fb\u8def\u677f\u672c\u8eab\u7684\u57fa\u6e96\u9ede\u9032\u884c\u5c0d\u4f4d\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528 LDI\uff0c\u4f60\u4e0d\u9700\u8981 3 \u6216 4 \u5bc6\u8033\u7684\u64f4\u5c55\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528 1:1 \u906e\u7f69\uff08\u96f6\u64f4\u5c55\uff09\u6216\u975e\u5e38\u7dca\u5bc6\u7684 1 \u5bc6\u8033\u64f4\u5c55\u3002\u9019\u8b93\u4f60\u5373\u4f7f\u5728 0.4mm \u9593\u8ddd\u7684\u5143\u4ef6\u4e0a\uff0c\u4e5f\u80fd\u4fdd\u6301\u5805\u56fa\u7684 3 \u5bc6\u8033\u963b\u9694\u3002\u662f\u7684\uff0cLDI \u6210\u672c\u8f03\u9ad8\u3002\u9019\u662f\u4e00\u7a2e\u9ad8\u7d1a\u5de5\u85dd\u3002\u4f46\u5c07\u9019\u6210\u672c\u8207\u8fd4\u5de5\u6210\u672c\u76f8\u6bd4\u8f03\u3002\u5982\u679c\u4f60\u662f\u5728\u88fd\u9020\u5e36\u6709 0805 \u88ab\u52d5\u5143\u4ef6\u548c SOIC \u6676\u7247\u7684\u6d88\u8cbb\u6027\u88dd\u7f6e\uff0c\u7701\u9322\u4f7f\u7528\u5bec\u9b06\u5de5\u85dd\u5373\u53ef\u3002\u4f46\u5982\u679c\u4f60\u5728\u653e\u7f6e 0.4mm \u9593\u8ddd\u7684 QFN \u6216 0.5mm BGA\uff0c\u300c\u88f8\u677f\u300d\u4e0a\u7684\u201c\u7bc0\u7701\u201d\u6703\u5728 AOI \u767c\u73fe\u7b2c\u4e00\u500b\u6a4b\u63a5\u6642\u77ac\u9593\u6d88\u5931\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-new-baseline\">\u65b0\u7684\u57fa\u6e96\u7dda<\/h2>\n\n\n<p>\u505c\u6b62\u4fe1\u4efb\u4f60\u7684 EDA \u5de5\u5177\u4e2d\u7684\u9810\u8a2d\u503c\u30024 \u5bc6\u8033\u7684\u5168\u5c40\u64f4\u5c55\u662f\u5143\u4ef6\u5de8\u5927\u6642\u4ee3\u7684\u907a\u7269\u3002<\/p>\n\n\n\n<p>\u5c0d\u65bc\u4efb\u4f55\u9593\u8ddd\u70ba 0.5mm \u6216\u66f4\u5c0f\u7684\u5143\u4ef6\uff0c\u4f60\u5fc5\u9808\u4ecb\u5165\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6aa2\u67e5\u7db2\u683c\uff1a<\/strong> \u78ba\u4fdd\u4f60\u7684\u8a2d\u8a08\u4e2d\u710a\u76e4\u9593\u81f3\u5c11\u6709 3 \u5bc6\u8033\uff080.075mm\uff09\u7684\u906e\u7f69\u3002<\/li>\n\n\n\n<li><strong>\u5be9\u6838\u64f4\u5c55\uff1a<\/strong> \u5982\u679c\u7dad\u6301\u8a72\u7db2\u683c\u9700\u8981\u5c07\u64f4\u5c55\u6e1b\u5c11\u5230 0 \u6216 1 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