{"id":3048,"date":"2014-08-06T08:24:00","date_gmt":"2014-08-06T00:24:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=3048"},"modified":"2024-04-16T16:02:49","modified_gmt":"2024-04-16T08:02:49","slug":"step-up-stencil-side","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2014\/08\/step-up-stencil-side\/","title":{"rendered":"\u968e\u68af\u5f0f\u92fc\u677f\u7684\u968e\u68af\u61c9\u8a72\u958b\u5728\u522e\u5200\u9762\uff1f\u9084\u662fPCB\u9762\uff1f"},"content":{"rendered":"

<\/font><\/p>\n

\u5230\u5e95<\/font>\u968e\u68af\u5f0f\u92fc\u677f(step stencil or 3D stencil)<\/font><\/strong>\u7684\u968e\u68af\u61c9\u8a72\u8a2d\u8a08\u5728\u522e\u5200\u9762\uff1f\u9084\u662f\u958b\u5728PCB\u9762\uff1f\u662f\u5f88\u591aSMT\u5de5\u7a0b\u5e2b\u722d\u8ad6\u4e0d\u4f11\u7684\u4e00\u9805\u8b70\u984c\uff0c\u5176\u5be6\u9019\u5169\u7a2e\u968e\u68af\u5f0f\u92fc\u677f\u5404\u6709\u5176\u512a\u7f3a\u9ede\uff0c\u7aef\u770b\u81ea\u5df1\u7684\u9700\u6c42\u4f86\u6c7a\u5b9a\u3002<\/font><\/p>\n

\u73fe\u5728\u7684\u96fb\u5b50\u7d44\u88dd\u5ee0\u4f7f\u7528\u3010<\/font>\u968e\u68af\u5f0f\u92fc\u677f\uff08step-up\/step-down stencil\uff09<\/a><\/font><\/strong>\u3011\u4f86\u8abf\u6574SMT\u4f5c\u696d\u7684\u932b\u818f\u91cf\u6709\u8d8a\u4f86\u8d8a\u666e\u904d\u7684\u8da8\u52e2\uff0c\u9019\u5927\u6982\u8207\u88ab\u52d5\u5143\u4ef6\u9ad4\u7a4d\u5feb\u901f\u7e2e\u5c0f\uff0c\u4f46\u4eba\u6a5f\u4ecb\u9762\u7684\u96f6\u4ef6\u5247\u7919\u65bc\u4eba\u985e\u624b\u6307\u64cd\u4f5c\u7684\u9650\u5236\u800c\u672a\u80fd\u8ddf\u8457\u7e2e\u5c0f\u6709\u95dc\uff0c\u65bc\u662f\u540c\u4e00\u7247\u5370\u5237\u96fb\u8def\u677f\u4e0a\u7684\u5927\u5c0f\u96f6\u4ef6\u9593\u5c31\u7522\u751f\u4e86\u932b\u818f\u5370\u5237\u91cf\u591a\u5be1\u7684\u722d\u57f7\u6230\u3002<\/font><\/p>\n

<\/p>\n

\u56e0\u70ba\u5728\u540c\u4e00\u7247\u5370\u5237\u96fb\u8def\u677f(PCB)\u4e0a\u6709\u5c0f\u96f6\u4ef6\uff08\u7d30\u9593\u8173\uff09\u7684\u5730\u65b9\u6703\u6c42<\/font>\u8584<\/strong><\/font>\u4e00\u9ede\u7684\u932b\u818f\u539a\u5ea6\uff0c\u76ee\u7684\u662f\u70ba\u4e86\u907f\u514d\u77ed\u8def(soldering short)\uff0c\u4f46\u6709\u5927\u96f6\u4ef6\u53ca\u710a\u8173\u5171\u9762\u5ea6(co-planarity)\u8f03\u5dee\u96f6\u4ef6\u7684\u5730\u65b9\u537b\u53c8\u8981\u6c42\u8981\u6709<\/font>\u539a<\/strong><\/font>\u4e00\u9ede\u7684\u932b\u818f\uff0c\u76ee\u7684\u662f\u70ba\u4e86\u591a\u5370\u932b\u818f\u4ee5\u907f\u514d\u7a7a\u710a(solder skip or solder empty<\/a>)\u6216\u932b\u5c11(insufficient solder)\u73fe\u8c61\u3002<\/font><\/p>\n

<\/font><\/p>\n

\u5c0d\u65bc<\/font>\u5c40\u90e8\u589e\u52a0\u932b\u818f\u91cf\u7684\u65b9\u6cd5<\/font><\/strong>\uff0c\u5de5\u4f5c\u718a\u4e4b\u524d\u66fe\u64b0\u6587\u3010\u56db\u7a2e\u65b9\u6cd5\u5c40\u90e8\u589e\u52a0SMT\u88fd\u7a0b\u7684\u710a\u932b\u91cf<\/a>\u3011\u8a0e\u8ad6\u904e\uff0c\u5176\u4e2d\u9084\u662f\u4ee5\u4f7f\u7528<\/font>\u968e\u68af\u5f0f\u92fc\u677f<\/font><\/strong>\u6700\u70ba\u5be6\u7528\uff0c\u56e0\u70ba\u88fd\u7a0b\u8f03\u70ba\u7a69\u5b9a\u4e14\u4e0d\u5fc5\u589e\u52a0\u4eba\u5de5\u6210\u672c\uff0c\u4e0d\u904e\u9019\u968e\u68af\u5f0f\u92fc\u677f\u7684\u505a\u6cd5\u537b\u6709\u5169\u7a2e\uff0c\u6b63\u5e38\u60c5\u6cc1\u4e0b\u5927\u591a\u662f\u5c07\u968e\u68af\u958b\u5728\u9762\u5411PCB\u9762(\u4e5f\u5c31\u662f<\/font>\u92fc\u7db2\u7684\u5e95\u4e0b<\/font><\/strong>)\uff0c\u53e6\u4e00\u7a2e\u5247\u662f\u5c07\u968e\u68af\u958b\u5728\u522e\u5200\u9762(\u4e5f\u5c31\u662f<\/font>\u92fc\u7db2\u7684\u6b63\u9762<\/font><\/strong>)\uff0c\u7a76\u7adf\u9019\u5169\u7a2e\u505a\u6cd5\u6709\u4f55\u5dee\u7570\u6027\uff1f\u6709\u4f55\u512a\u7f3a\u9ede\u5462\uff1f\u53c8\u6703\u9020\u6210\u4ec0\u9ebc\u7d50\u679c\uff1f<\/font><\/p>\n\n\n\n\n\n\n
 <\/td>\n\u968e\u68af\u5728\u522e\u5200\u9762
(\u92fc\u7db2\u6b63\u9762)<\/font><\/b><\/td>\n		\u968e\u68af\u5728PCB\u9762
(\u92fc\u7db2\u4e0b\u9762)<\/font><\/b><\/td>\n<\/tr>\n
\u512a\u9ede<\/strong><\/font><\/td>\n1. \u5c0d\u65bc\u932b\u818f\u91cf\u7684\u63a7\u7ba1\u6703\u6bd4\u8f03\u7cbe\u6e96\u3002<\/font><\/strong>\u56e0\u70ba\u522e\u5200\u76f4\u63a5\u63a5\u89f8\u5728\u968e\u68af\u9762\uff0c\u522e\u5200\u53ef\u4ee5\u6cbf\u8457\u968e\u68af\u7684\u5f62\u72c0\u4f5c\u4e0a\u4e0b\u79fb\u52d5\uff0c\u9054\u5230\u7cbe\u6e96\u932b\u91cf\u5370\u5237\u7684\u76ee\u7684\u3002\u5370\u5237\u901f\u5ea6\u4e0d\u5efa\u8b70\u592a\u5feb\u3002
2. \u968e\u68af\u7684\u539a\u5ea6\u53ef\u4ee5\u6709\u6bd4\u8f03\u5927\u7684\u5f48\u6027\u3002<\/font><\/strong>\u4e5f\u5c31\u662f\u8aaa\u968e\u68af\u53ef\u4ee5\u8a2d\u8a08\u5f97\u8f03\u539a\uff0c\u56e0\u70ba\u5176\u53ef\u4ee5\u8f03\u70ba\u7cbe\u6e96\u7684\u63a7\u5236\u932b\u818f\u91cf\uff0c\u6240\u4ee5\u53ef\u4ee5\u85c9\u7531\u589e\u539a\u92fc\u677f\u4f46\u7e2e\u5c0f\u958b\u5b54\u5927\u5c0f\u4f86\u63a7\u5236\u932b\u818f\u91cf\u3002
3. \u53ef\u4ee5\u964d\u4f4e\u92fc\u7db2\u5e95\u90e8\u6ea2\u932b\u7684\u6bd4\u7387\u3002<\/font><\/strong><\/td>\n		1.\u4e0d\u5f71\u97ff\u522e\u5200\u7684\u58fd\u547d<\/font><\/strong>\u3002(\u522e\u5200\u58fd\u547d\u8207\u975e\u968e\u68af\u92fc\u677f\u6642\u4e00\u6a23)<\/td>\n<\/tr>\n
\u7f3a\u9ede<\/strong><\/font><\/td>\n1. \u522e\u5200\u7684\u58fd\u547d\u6703\u6e1b\u640d\u7d0420%<\/font><\/strong>\u3002
(\u9019\u662f\u56e0\u70ba\u522e\u5200\u76f4\u63a5\u63a5\u89f8\u9ad8\u4f4e\u4e0d\u5e73\u7684\u92fc\u677f\u8868\u9762\uff0c\u9020\u6210\u5c40\u90e8\u5340\u57df\u7684\u65bd\u529b\u4e0d\u5747\u81f4\u5f15\u8d77\u522e\u5200\u8b8a\u5f62\u6210\u6ce2\u6d6a\u72c0)
2. \u968e\u68af\u9644\u8fd1(3mm\u4ee5\u5167)\u5982\u679c\u67090402\u4ee5\u4e0b\u96f6\u4ef6\u6216\u7d30\u8173\u9593\u8ddd\u96f6\u4ef6(0.2mm\u9593\u9699)\u7684\u710a\u932b\u5bb9\u6613\u9020\u6210\u932b\u591a\u77ed\u8def\u7f3a\u9ede(\u9700\u7279\u5225\u7ba1\u63a7)\u3002<\/td>\n		1. \u968e\u68af\u7684\u539a\u5ea6\u7bc4\u570d\u8f03\u5c0f<\/font><\/strong>\u3002\u5426\u5247\u5c0d\u932b\u818f\u91cf\u63a7\u5236\u6703\u8b8a\u5f97\u4e0d\u7cbe\u6e96\u3002
2. \u968e\u68af\u65c1\u76f8\u9130\u7684\u932b\u818f\u91cf\u8f03\u96e3\u7ba1\u63a7\u3002 3. \u5370\u5237\u6a5f\u81ea\u52d5\u64e6\u62ed\u6e05\u6f54\u92fc\u7db2\u6642\u6613\u7522\u751f\u6b7b\u89d2\u6e05\u4e0d\u4e7e\u6de8\uff0c\u5bb9\u6613\u6709\u6cbe\u932b\u73fe\u8c61<\/font><\/strong>\u9700\u6ce8\u610f\u3002
4.\u968e\u68af\u9644\u8fd1(3mm\u4ee5\u5167)\u5982\u679c\u67090402\u4ee5\u4e0b\u96f6\u4ef6\u6216\u7d30\u8173\u9593\u8ddd\u96f6\u4ef6(0.2mm\u9593\u9699)\u7684\u710a\u932b\u5bb9\u6613\u9020\u6210\u77ed\u8def\u554f\u984c(\u9700\u7279\u5225\u7ba1\u63a7)\u3002<\/td>\n<\/tr>\n
\u5de5\u4f5c\u718a\u500b\u4eba\u4f7f\u7528\u5efa\u8b70<\/font><\/strong><\/td>\n\u5982\u679c\u5c0d\u932b\u818f\u539a\u5ea6\u6709\u8f03\u5927\u5dee\u7570\u9700\u6c42\u6642\u5efa\u8b70\u63a1\u7528\uff0c\u9700\u540c\u6642\u8861\u91cf\u522e\u5200\u7684\u58fd\u547d\u3002<\/td>\n\u5982\u679c\u932b\u818f\u539a\u5ea6\u5dee\u7570\u7684\u8981\u6c42\u53ef\u4ee5\u57280.025mm\u4ee5\u5167\uff08\u9644\u8fd1\u7121\u7d30\u5c0f\u8173\u9593\u8ddd\u96f6\u4ef6\uff09\u6642\u5efa\u8b70\u4f7f\u7528\uff0c\u8f03\u4e0d\u5f71\u97ff\u522e\u5200\u58fd\u547d\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

\u5ef6\u4f38\u95b1\u8b80\uff1a<\/font>
\u8ff4\u6d41\u710a\u7684\u6eab\u5ea6\u66f2\u7dda Reflow Profile<\/font><\/a>
\u5c4f\u853d\u6846(Shielding frame)\u8a2d\u8a08\u8207\u751f\u7522\u6ce8\u610f\u4e8b\u9805<\/font><\/a>
\u4ecb\u7d39\u4f7f\u7528\u5c4f\u853d\u593e\u4f86\u53d6\u4ee3\u5c4f\u853d\u6846(SMT shielding can clip)<\/font><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

\u5230\u5e95\u968e\u68af\u5f0f\u92fc\u677f(step stencil or …<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,4],"tags":[149],"aioseo_notices":[],"views":17365,"_links":{"self":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/3048"}],"collection":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/comments?post=3048"}],"version-history":[{"count":1,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/3048\/revisions"}],"predecessor-version":[{"id":11262,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/3048\/revisions\/11262"}],"wp:attachment":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/media?parent=3048"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/categories?post=3048"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/tags?post=3048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}