{"id":1470,"date":"2026-03-21T08:21:29","date_gmt":"2026-03-21T00:21:29","guid":{"rendered":"https:\/\/www.jingpengpcb.com\/?p=1470"},"modified":"2026-10-02T19:37:25","modified_gmt":"2026-10-02T11:37:25","slug":"pcb-emi-design-specification-control-principles","status":"publish","type":"post","link":"https:\/\/www.jingpengpcb.com\/en\/blog\/pcb-emi-design-specification-control-principles\/","title":{"rendered":"EMI Design Specifications and Control Principles for PCBs"},"content":{"rendered":"

PCB\u7535\u8def\u677f\u4e0a\u7684EMI\uff08\u7535\u78c1\u5e72\u6270\uff09\u76f4\u63a5\u5f71\u54cd\u7535\u5b50\u8bbe\u5907\u7684\u7a33\u5b9a\u6027\u548c\u6027\u80fd\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8PCB\u7535\u8def\u677fEMI\u8bbe\u8ba1\u89c4\u8303\u7684\u6838\u5fc3\u539f\u5219\uff0c\u5305\u62ecIC\u4f9b\u7535\u5904\u7406\u3001\u65f6\u949f\u7ebf\u5904\u7406\u548cI\/O\u53e3\u5904\u7406\u7b49\u5173\u952e\u73af\u8282\u3002<\/p>\n

\u4e00\u3001IC\u7684\u4f9b\u7535\u5904\u7406<\/h2>\n

1.1 \u786e\u4fdd\u6bcf\u4e2aIC\u7684\u7535\u6e90PIN\u90fd\u6709\u4e00\u4e2a0.1UF\u7684\u53bb\u8026\u7535\u5bb9<\/h3>\n

\u5bf9\u4e8e\u6bcf\u4e2aIC\u7684\u7535\u6e90\u5f15\u811a\uff0c\u90fd\u8981\u914d\u5907\u4e00\u4e2a0.1UF\u7684\u53bb\u8026\u7535\u5bb9\u3002\u5bf9\u4e8eBGA\u82af\u7247\uff08Ball Grid Array\uff0c\u7403\u6805\u9635\u5217\uff09\uff0c\u9700\u8981\u5728BGA\u7684\u56db\u4e2a\u89d2\u4e0a\u5206\u522b\u6dfb\u52a08\u98970.1UF\u548c0.01UF\u7684\u7535\u5bb9\u3002\u5728PCB\u7684\u4f9b\u7535\u8d70\u7ebf\u4e2d\uff0c\u7279\u522b\u8981\u6ce8\u610f\u52a0\u5165\u6ee4\u6ce2\u7535\u5bb9\uff0c\u5982VTT\uff08Termination Voltage\uff09\u3002\u8fd9\u4e0d\u4ec5\u6709\u52a9\u4e8e\u7535\u8def\u7684\u7a33\u5b9a\u6027\uff0c\u8fd8\u53ef\u4ee5\u51cf\u5c11EMI\u3002<\/p>\n

\u4e8c\u3001\u65f6\u949f\u7ebf\u5904\u7406<\/h2>\n

2.1 \u5efa\u8bae\u4f18\u5148\u5904\u7406\u65f6\u949f\u7ebf<\/h3>\n

\u5bf9\u4e8e\u9891\u7387\u5927\u4e8e\u7b49\u4e8e66MHz\u7684\u65f6\u949f\u7ebf\uff0c\u6bcf\u6761\u7ebf\u7684\u8fc7\u5b54\u6570\u4e0d\u8d85\u8fc72\u4e2a\uff0c\u5e73\u5747\u4e0d\u8d85\u8fc71.5\u4e2a\u3002\u9891\u7387\u5c0f\u4e8e66MHz\u7684\u65f6\u949f\u7ebf\uff0c\u6bcf\u6761\u7ebf\u7684\u8fc7\u5b54\u6570\u4e0d\u8d85\u8fc73\u4e2a\uff0c\u5e73\u5747\u4e0d\u8d85\u8fc72.5\u4e2a\u3002\u957f\u5ea6\u5927\u4e8e12\u82f1\u5bf8\u7684\u65f6\u949f\u7ebf\uff0c\u5982\u679c\u9891\u7387\u5927\u4e8e20MHz\uff0c\u8fc7\u5b54\u6570\u4e0d\u8d85\u8fc72\u4e2a\u3002<\/p>\n

2.2 \u8fc7\u5b54\u65c1\u8def\u7535\u5bb9\u5904\u7406<\/h3>\n

\u5982\u679c\u65f6\u949f\u7ebf\u4e0a\u5b58\u5728\u8fc7\u5b54\uff0c\u5728\u8fc7\u5b54\u76f8\u90bb\u4f4d\u7f6e\u7684\u7b2c\u4e8c\u5c42\u548c\u7b2c\u4e09\u5c42\u4e4b\u95f4\u52a0\u5165\u65c1\u8def\u7535\u5bb9\uff0c\u4ee5\u786e\u4fdd\u53c2\u8003\u5c42\u7684\u9ad8\u9891\u7535\u6d41\u73af\u8def\u5728\u65f6\u949f\u7ebf\u6539\u53d8\u540e\u4ecd\u7136\u8fde\u7eed\u3002\u65c1\u8def\u7535\u5bb9\u5668\u5e94\u9760\u8fd1\u8fc7\u5b54\uff0c\u6700\u5927\u8ddd\u79bb\u4e0d\u8d85\u8fc7300 MIL\u3002<\/p>\n

2.3 \u65f6\u949f\u7ebf\u5e03\u5c40\u539f\u5219<\/h3>\n

\u6240\u6709\u65f6\u949f\u7ebf\u8def\u539f\u5219\u4e0a\u4e0d\u5f97\u8de8\u8d8a\u5c9b\u5c7f\u3002\u5f53\u65f6\u949f\u7ebf\u4e0a\u6709\u4e24\u4e2a\u8fc7\u5b54\u548c\u4e00\u4e2a\u5c9b\u5c7f\u65f6\uff0c\u5e94\u9009\u62e9\u4e00\u4e2a\u5c9b\u5c7f\u7a7f\u8d8a\u3002\u65f6\u949f\u7ebf\u8ddd\u79bbI\/O\u4fa7\u677f\u8fb9\u7f18500MIL\u4ee5\u4e0a\uff0c\u4e0d\u5f97\u4e0eI\/O\u7ebf\u8d70\u7ebf\u3002\u5982\u679c\u65e0\u6cd5\u907f\u514d\uff0c\u65f6\u949f\u7ebf\u548cI\/O\u7aef\u53e3\u7ebf\u4e4b\u95f4\u7684\u8ddd\u79bb\u5e94\u5927\u4e8e50 MIL\u3002<\/p>\n

2.4 \u65f6\u949f\u7ebf\u53c2\u8003\u5c42\u8bbe\u7f6e<\/h3>\n

\u5f53\u65f6\u949f\u7ebf\u8d70\u5728\u7b2c\u56db\u5c42\u65f6\uff0c\u65f6\u949f\u7ebf\u7684\u53c2\u8003\u5c42\uff08\u7535\u6e90\u5e73\u9762\uff09\u5e94\u5c3d\u91cf\u5728\u7ed9\u65f6\u949f\u4f9b\u7535\u7684\u7535\u6e90\u5e73\u9762\u4e0a\u3002\u65f6\u949f\u7ebf\u5e94\u5c3d\u91cf\u5c11\u5730\u5f15\u7528\u5176\u4ed6\u7535\u6e90\u5e73\u9762\u3002\u9891\u7387\u5927\u4e8e\u6216\u7b49\u4e8e66MHz\u7684\u65f6\u949f\u7ebf\u7684\u53c2\u8003\u7535\u6e90\u5e73\u9762\u5fc5\u987b\u662f3.3V\u7535\u6e90\u5e73\u9762\u3002<\/p>\n

2.5 \u65f6\u949f\u7ebf\u95f4\u8ddd\u4e0e\u8d70\u7ebf<\/h3>\n

\u65f6\u949f\u7ebf\u4e4b\u95f4\u7684\u8ddd\u79bb\u5e94\u5927\u4e8e25 MIL\u3002\u65f6\u949f\u7ebf\u7684\u8fdb\u7ebf\u548c\u51fa\u7ebf\u8981\u5c3d\u91cf\u9065\u8fdc\uff0c\u907f\u514d\u4f7f\u7528\u76f8\u4f3c\u7684\u7ebf\u7a0b\u65b9\u6cd5\u3002\u5f53\u65f6\u949f\u7ebf\u8fde\u63a5\u5230BGA\u7b49\u5668\u4ef6\u65f6\uff0c\u5982\u679c\u9700\u8981\u66f4\u6362\u5c42\u6b21\uff0c\u6700\u597d\u907f\u514d\u4f7f\u7528PCB\u8d70\u7ebf\u5f62\u5f0f\u3002BGA\u4e0b\u9762\u4e0d\u8981\u8bbe\u7f6e\u8fc7\u5b54\uff0c\u6700\u597d\u4f7f\u7528H\u578b\u7684PCB\u8d70\u7ebf\u5f62\u5f0f\u3002<\/p>\n

2.6 \u65f6\u949f\u4fe1\u53f7\u6ce8\u610f\u4e8b\u9879<\/h3>\n

\u6ce8\u610f\u6240\u6709\u65f6\u949f\u4fe1\u53f7\uff0c\u4e0d\u8981\u5ffd\u7565\u4efb\u4f55\u65f6\u949f\uff0c\u5305\u62ecAUDIO CODEC\u7684AC_\u7279\u522b\u6ce8\u610fFS3-FS0\u3002\u867d\u7136\u5b83\u7684\u540d\u5b57\u4e0d\u662f\u65f6\u949f\uff0c\u4f46\u5b9e\u9645\u4e0a\u4e5f\u662f\u4e00\u4e2a\u65f6\u949f\u3002\u65f6\u949f\u82af\u7247\u7684\u4e0a\u62c9\u548c\u4e0b\u62c9\u7535\u963b\u5e94\u5c3d\u91cf\u9760\u8fd1\u65f6\u949f\u82af\u7247\u3002<\/p>\n

\u4e09\u3001I\/O\u53e3\u5904\u7406<\/h2>\n

3.1 I\/O\u53e3\u63a5\u5730\u5904\u7406<\/h3>\n

\u6bcf\u4e2aI\/O\u53e3\uff0c\u5305\u62ecPS\/2\u3001USB\u3001LPT\u3001COM\u3001SPEAK OUT\u548cGAME\uff0c\u90fd\u5206\u6210\u4e00\u5757\u5730\uff0c\u6700\u5de6\u8fb9\u548c\u6700\u53f3\u8fb9\u63a5\u6570\u5b57\u5730\uff0c\u5bbd\u5ea6\u4e0d\u5c0f\u4e8e200MIL\u6216\u8005\u4e09\u4e2a\u8fc7\u5b54\uff0c\u5176\u4ed6\u5730\u65b9\u4e0d\u63a5\u6570\u5b57\u5730\u3002\u5982\u679cCOM2\u53e3\u662fpin\u578b\u7684\uff0c\u5c3d\u91cf\u9760\u8fd1I\/O\u5730\u3002<\/p>\n

3.2 EMI\u8bbe\u5907\u5e03\u5c40<\/h3>\n

I\/O\u7535\u8defEMI\u8bbe\u5907\u5e94\u5c3d\u53ef\u80fd\u9760\u8fd1I\/O SHIELD\u3002\u4f9b\u7535\u5c42\u548cI\/O\u53e3\u5904\u7684\u5730\u5c42\u9694\u79bb\u6210\u5b64\u5c9b\uff0cBottom\u548cTOP\u5c42\u94fa\u597d\uff0c\u4fe1\u53f7\u4e0d\u8de8\u8d8a\u5c9b\u5c7f\uff08\u4fe1\u53f7\u7ebf\u76f4\u63a5\u4ecePORT\u5f15\u51fa\uff0c\u4e0d\u5141\u8bb8\u5728I\/O PORT\u8fdb\u884c\u957f\u8ddd\u79bbPCB\u8d70\u7ebf\uff09\u3002<\/p>\n

\u56db\u3001\u6ce8\u610f\u4e8b\u9879<\/h2>\n

PCB\u8bbe\u8ba1\u5de5\u7a0b\u5e08\u5e94\u4e25\u683c\u9075\u5b88EMI PCB\u8bbe\u8ba1\u89c4\u8303\uff0cEMI\u5de5\u7a0b\u5e08\u6709\u6743\u68c0\u67e5\u3002PCB\u8bbe\u8ba1\u5de5\u7a0b\u5e08\u5e94\u5bf9\u56e0\u8fdd\u53cdEMI PCB\u8bbe\u8ba1\u89c4\u8303\u800c\u5bfc\u81f4\u7684EMI\u6d4b\u8bd5\u5931\u8d25\u8d1f\u8d23\u3002<\/p>\n

EMI\u5de5\u7a0b\u5e08\u8d1f\u8d23PCB\u8bbe\u8ba1\u89c4\u8303\uff0c\u4f46\u5373\u4f7f\u9075\u5b88EMI PCB\u8bbe\u8ba1\u89c4\u8303\u4ecd\u672a\u901a\u8fc7EMI\u6d4b\u8bd5\uff0cEMI\u5de5\u7a0b\u5e08\u8d1f\u8d23\u63d0\u4f9b\u89e3\u51b3\u65b9\u6848\uff0c\u5e76\u5c06\u5176\u7eb3\u5165EMI PCB\u8bbe\u8ba1\u89c4\u8303\u4e2d\u3002EMI\u5de5\u7a0b\u5e08\u8d1f\u8d23\u5bf9\u6bcf\u4e2a\u5916\u8bbe\u7aef\u53e3\u8fdb\u884cEMI\u6d4b\u8bd5\uff0c\u4e0d\u5f97\u9057\u6f0f\u6d4b\u8bd5\u3002<\/p>\n

\u6bcf\u4f4dPCB\u8bbe\u8ba1\u5de5\u7a0b\u5e08\u6709\u6743\u63d0\u51fa\u5173\u4e8ePCB\u8bbe\u8ba1\u89c4\u8303\u7684\u5efa\u8bae\u548c\u7591\u95ee\u3002EMI\u5de5\u7a0b\u5e08\u8d1f\u8d23\u56de\u7b54\u95ee\u9898\uff0c\u5e76\u5728\u5b9e\u9a8c\u786e\u8ba4\u5de5\u7a0b\u5e08\u7684\u5efa\u8bae\u540e\u5c06\u5176\u6dfb\u52a0\u5230PCB\u8bbe\u8ba1\u89c4\u8303\u4e2d\u3002EMI\u5de5\u7a0b\u5e08\u5e94\u52aa\u529b\u964d\u4f4eEMI PCB\u8bbe\u8ba1\u6210\u672c\uff0c\u51cf\u5c11\u78c1\u73e0\u7684\u4f7f\u7528\u6570\u91cf\u3002<\/p>\n

Frequently Asked Questions<\/h2>\n

1. \u4ec0\u4e48\u662fPCB\u7535\u8def\u677f\u7684EMI\uff1f<\/p>\n

PCB\u7535\u8def\u677f\u7684EMI\u662f\u6307\u7535\u78c1\u5e72\u6270\uff0c\u5b83\u53ef\u80fd\u5bf9\u5468\u56f4\u7684\u7535\u5b50\u8bbe\u5907\u6216\u7535\u8def\u4ea7\u751f\u4e0d\u5e0c\u671b\u7684\u5f71\u54cd\u3002EMI\u53ef\u4ee5\u901a\u8fc7\u5408\u9002\u7684\u8bbe\u8ba1\u548c\u5e03\u5c40\u6765\u51cf\u5c11\u3002<\/p>\n

2. \u4e3a\u4ec0\u4e48IC\u7684\u4f9b\u7535\u5904\u7406\u5bf9EMI\u7ba1\u7406\u5f88\u91cd\u8981\uff1f<\/p>\n

IC\u7684\u4f9b\u7535\u5904\u7406\u5bf9EMI\u7ba1\u7406\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a\u4e0d\u6b63\u786e\u7684\u4f9b\u7535\u8bbe\u8ba1\u53ef\u80fd\u5bfc\u81f4\u7535\u6d41\u56de\u8def\u4e0d\u7a33\u5b9a\uff0c\u8fdb\u800c\u589e\u52a0EMI\u7684\u98ce\u9669\u3002<\/p>\n

3. \u65f6\u949f\u7ebf\u5904\u7406\u4e2d\u7684\u8fc7\u5b54\u662f\u4ec0\u4e48\uff1f<\/p>\n

\u8fc7\u5b54\u662f\u4e00\u79cd\u5c06\u7535\u8def\u8fde\u63a5\u5230\u4e0d\u540cPCB\u5c42\u7684\u65b9\u6cd5\u3002\u5728\u65f6\u949f\u7ebf\u5904\u7406\u4e2d\uff0c\u9002\u5f53\u7684\u8fc7\u5b54\u8bbe\u8ba1\u53ef\u4ee5\u51cf\u5c11EMI\u3002<\/p>\n

4. \u4e3a\u4ec0\u4e48I\/O\u53e3\u5904\u7406\u5bf9EMI\u6709\u5f71\u54cd\uff1f<\/p>\n

I\/O\u53e3\u901a\u5e38\u6d89\u53ca\u5230\u4e0e\u5916\u90e8\u8bbe\u5907\u7684\u901a\u4fe1\uff0c\u56e0\u6b64\u5b83\u4eec\u7684\u8bbe\u8ba1\u548c\u8fde\u63a5\u4e5f\u4f1a\u5f71\u54cdEMI\u3002\u5408\u7406\u7684I\/O\u53e3\u5904\u7406\u53ef\u4ee5\u964d\u4f4eEMI\u98ce\u9669\u3002<\/p>\n

5. \u4e3a\u4ec0\u4e48PCB\u8bbe\u8ba1\u5de5\u7a0b\u5e08\u9700\u8981\u9075\u5b88EMI PCB\u8bbe\u8ba1\u89c4\u8303\uff1f<\/p>\n

\u9075\u5b88EMI PCB\u8bbe\u8ba1\u89c4\u8303\u53ef\u4ee5\u786e\u4fddPCB\u7535\u8def\u677f\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\uff0c\u5e76\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u7535\u78c1\u5e72\u6270\u3002\u8fd9\u6709\u52a9\u4e8e\u786e\u4fdd\u7535\u5b50\u8bbe\u5907\u7684\u53ef\u9760\u6027\u548c\u5408\u89c4\u6027\u3002<\/p>","protected":false},"excerpt":{"rendered":"

PCB\u7535\u8def\u677f\u4e0a\u7684EMI\uff08\u7535\u78c1\u5e72\u6270\uff09\u76f4\u63a5\u5f71\u54cd\u7535\u5b50\u8bbe\u5907\u7684\u7a33\u5b9a\u6027\u548c\u6027\u80fd\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8PCB\u7535\u8def\u677fEMI\u8bbe\u8ba1\u89c4\u8303\u7684\u6838 […]<\/p>\n","protected":false},"author":1,"featured_media":8868,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"EMI Design Specifications and Control Principles for PCBs","description":"PCB\u7684EMI\u600e\u4e48\u63a7\u5236\uff1f\u6309IC\u4f9b\u7535\u53bb\u8026\u7535\u5bb9\u3001\u65f6\u949f\u7ebf\u5904\u7406\u3001I\/O\u53e3\u9632\u62a4\u5230\u53c2\u8003\u5c42\u8bbe\u7f6e\uff0c\u9010\u6761\u7ed9\u51fa\u53ef\u6267\u884c\u7684\u5e03\u7ebf\u4e0e\u5e03\u5c40\u89c4\u8303\u53ca\u5224\u65ad\u6807\u51c6\u3002"},"_slim_seo_primary_term_category":0,"_slim_seo_primary_term_post_tag":0,"footnotes":""},"categories":[26],"tags":[255],"class_list":["post-1470","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-emi"],"_links":{"self":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts\/1470","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/comments?post=1470"}],"version-history":[{"count":1,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts\/1470\/revisions"}],"predecessor-version":[{"id":13141,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts\/1470\/revisions\/13141"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/media\/8868"}],"wp:attachment":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/media?parent=1470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/categories?post=1470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/tags?post=1470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}