{"id":6362,"date":"2023-08-01T01:57:06","date_gmt":"2023-08-01T01:57:06","guid":{"rendered":"https:\/\/www.besterpcba.com\/?p=6362"},"modified":"2023-08-01T01:57:06","modified_gmt":"2023-08-01T01:57:06","slug":"what-is-coefficient-of-expansion","status":"publish","type":"post","link":"https:\/\/www.besterpcba.com\/zh_hk\/%e4%bb%80%e9%ba%bc%e6%98%af%e8%86%a8%e8%84%b9%e4%bf%82%e6%95%b8\/","title":{"rendered":"\u4ec0\u4e48\u662f\u81a8\u80c0\u7cfb\u6570"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"what-is-coefficient-of-expansion\">\u4ec0\u4e48\u662f\u81a8\u80c0\u7cfb\u6570<\/h2>\n\n\n<p>\u81a8\u80c0\u7cfb\u6570\u53c8\u79f0\u70ed\u81a8\u80c0\u7cfb\u6570\uff08CTE\uff09\uff0c\u662f\u6307\u6750\u6599\u5728\u6e29\u5ea6\u53d8\u5316\u65f6\u81a8\u80c0\u6216\u6536\u7f29\u7684\u901f\u7387\u3002\u5728\u5370\u5237\u7535\u8def\u677f\u884c\u4e1a\u4e2d\uff0c\u5b83\u5177\u4f53\u6d89\u53ca\u5230\u5370\u5237\u7535\u8def\u677f\u6750\u6599\u53d7\u70ed\u65f6\u7684\u81a8\u80c0\u3002<\/p>\n\n\n\n<p>CTE \u901a\u5e38\u4ee5\u6750\u6599\u6bcf\u52a0\u70ed\u6444\u6c0f\u5ea6\u800c\u6269\u5927\u7684\u767e\u4e07\u5206\u7387 (ppm) \u8868\u793a\u3002\u8fd9\u662f\u8bbe\u8ba1\u548c\u5236\u9020\u5370\u5237\u7535\u8def\u677f\u65f6\u9700\u8981\u8003\u8651\u7684\u4e00\u4e2a\u91cd\u8981\u5c5e\u6027\uff0c\u56e0\u4e3a\u5b83\u4f1a\u5f71\u54cd\u7535\u8def\u677f\u7684\u53ef\u9760\u6027\u548c\u6027\u80fd\u3002\u5370\u5237\u7535\u8def\u677f\u57fa\u6750\u7684 CTE \u901a\u5e38\u9ad8\u4e8e\u94dc\u7684 CTE\u3002\u57fa\u677f\u548c\u94dc\u4e4b\u95f4\u7684 CTE \u5dee\u5f02\u4f1a\u5728 PCB \u53d7\u70ed\u65f6\u5bfc\u81f4\u4e92\u8fde\u95ee\u9898\u3002\u56e0\u6b64\uff0c\u4e86\u89e3\u548c\u7ba1\u7406\u5370\u5237\u7535\u8def\u677f\u5236\u9020\u6240\u7528\u6750\u6599\u7684 CTE \u81f3\u5173\u91cd\u8981\u3002<\/p>\n\n\n\n<p>PCB \u6750\u6599\u7684 CTE \u53d7\u591a\u79cd\u56e0\u7d20\u5f71\u54cd\uff0c\u5305\u62ec\u6750\u6599\u7684\u6210\u5206\u548c\u7ed3\u6784\u3002\u6cbf X \u8f74\u548c Y \u8f74\uff08\u6c34\u5e73\u65b9\u5411\uff09\u7684 CTE \u503c\u4e00\u822c\u8f83\u4f4e\uff0c\u901a\u5e38\u7ea6\u4e3a\u6bcf\u6444\u6c0f\u5ea6 10 \u81f3 20 ppm\uff0c\u8fd9\u662f\u7531\u4e8e\u5b58\u5728\u73bb\u7483\u7f16\u7ec7\u7269\uff0c\u4f7f\u6750\u6599\u5728\u8fd9\u4e9b\u65b9\u5411\u53d7\u5230\u9650\u5236\u3002\u7136\u800c\uff0c\u5728 Z \u8f74\u65b9\u5411\uff08\u5782\u76f4\u65b9\u5411\uff09\uff0c\u6750\u6599\u5fc5\u987b\u80fd\u591f\u81a8\u80c0\u4ee5\u9002\u5e94\u70ed\u81a8\u80c0\uff0c\u56e0\u6b64\u6cbf Z \u8f74\u65b9\u5411\u7684 CTE \u503c\u8f83\u4f4e\u662f\u7406\u60f3\u7684\u3002\u5efa\u8bae\u6cbf Z \u8f74\u6bcf\u6444\u6c0f\u5ea6\u7684 CTE \u503c\u5c0f\u4e8e 70 ppm\u3002<\/p>\n\n\n\n<p>\u73bb\u7483\u5316\u8f6c\u53d8\u6e29\u5ea6 (Tg) \u662f CTE \u66f2\u7ebf\u4e0a\u7684\u4e00\u4e2a\u4e34\u754c\u70b9\u3002\u5b83\u662f\u6750\u6599\u884c\u4e3a\u53d1\u751f\u53d8\u5316\u7684\u6e29\u5ea6\uff0c\u5982\u679c\u6e29\u5ea6\u8d85\u8fc7 Tg\uff0c\u57fa\u677f\u5c31\u4f1a\u53d8\u8f6f\uff0c\u4e0d\u518d\u81a8\u80c0\u3002\u8003\u8651 PCB \u6750\u6599\u7684 Tg \u4e0e CTE \u7684\u5173\u7cfb\u975e\u5e38\u91cd\u8981\u3002<\/p>\n\n\n\n<div class=\"wp-block-group glossary_faqs\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h2 class=\"wp-block-heading\" id=\"frequently-asked-questions\">\u5e38\u89c1\u95ee\u9898<\/h2>\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-the-coefficient-of-expansion\">\u4ec0\u4e48\u662f\u81a8\u80c0\u7cfb\u6570\uff1f<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>\u81a8\u80c0\u7cfb\u6570\u662f\u6307\u5728\u4fdd\u6301\u538b\u529b\u4e0d\u53d8\u7684\u60c5\u51b5\u4e0b\uff0c\u7269\u4f53\u7684\u957f\u5ea6\u3001\u9762\u79ef\u6216\u4f53\u79ef\u5728\u6e29\u5ea6\u6bcf\u5347\u9ad8\u4e00\u5ea6\u65f6\u4e0e\u5176\u5728\u7279\u5b9a\u6e29\u5ea6\uff08\u901a\u5e38\u4e3a 0\u00b0C\uff09\u4e0b\u7684\u539f\u59cb\u957f\u5ea6\u3001\u9762\u79ef\u6216\u4f53\u79ef\u7684\u53d8\u5316\u4e4b\u6bd4\u3002\u5b83\u4e5f\u88ab\u79f0\u4e3a\u81a8\u80c0\u7387\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-the-coefficient-of-thermal-expansion-of-fr4-pcb\">FR4 \u5370\u5237\u7535\u8def\u677f\u7684\u70ed\u81a8\u80c0\u7cfb\u6570\u662f\u591a\u5c11\uff1f<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>FR4 \u5370\u5237\u7535\u8def\u677f\u7684\u70ed\u81a8\u80c0\u7cfb\u6570 (CTE) \u4e3a 17 \u81f3 19ppm\/C\u3002\u8fd9\u79cd CTE \u9002\u5408\u6709\u673a\u5c01\u88c5\u3002\u7136\u800c\uff0c\u968f\u7740\u884c\u4e1a\u7684\u53d1\u5c55\uff0c\u5bf9\u4f4e CTE \u5c01\u88c5\u7684\u9700\u6c42\u65e5\u76ca\u589e\u957f\u3002\u56e0\u6b64\uff0c\u9700\u8981\u4e00\u79cd\u80fd\u8c03\u6574 CTE \u4ee5\u5339\u914d\u9676\u74f7\u5c01\u88c5\u751a\u81f3 DDA\/\u5012\u88c5\u82af\u7247\u5143\u4ef6\u7684\u5370\u5237\u7535\u8def\u677f\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-are-typical-cte-values\">\u4ec0\u4e48\u662f\u5178\u578b\u7684 CTE \u503c<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>\u4e00\u822c\u6765\u8bf4\uff0c\u91d1\u5c5e\u7684\u70ed\u81a8\u80c0\u7cfb\u6570 (CTE) \u503c\u901a\u5e38\u4ecb\u4e8e\u9676\u74f7\uff08\u8f83\u4f4e\u503c\uff09\u548c\u805a\u5408\u7269\uff08\u8f83\u9ad8\u503c\uff09\u4e4b\u95f4\u3002\u91d1\u5c5e\u548c\u5408\u91d1\u7684 CTE \u503c\u901a\u5e38\u5728 10 \u5230 30\u00d710 \u4e4b\u95f4\u3002<sup>-<\/sup><sup>6<\/sup>\/K\uff085.5 \u81f3 16.5\u00d710<sup>-<\/sup><sup>6<\/sup>\/\u00b0F).<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>\u4ec0\u4e48\u662f\u81a8\u80c0\u7cfb\u6570<\/p>\n<p>\u81a8\u80c0\u7cfb\u6570\u53c8\u79f0\u70ed\u81a8\u80c0\u7cfb\u6570\uff08CTE\uff09\uff0c\u662f\u6307\u6750\u6599\u5728\u6e29\u5ea6\u53d8\u5316\u65f6\u81a8\u80c0\u6216\u6536\u7f29\u7684\u901f\u7387\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"article_term":"","article_term_alternate":"","article_term_def":"","article_hook":"","auto_links":"","article_topic":"","article_fact_check":"","mt_social_share":"","mt_content_meta":"","mt_glossary_display":"","glossary_heading":"","glossary":"Coefficient of Expansion","glossary_alter":"","glossary_def":"","article_task":"","footnotes":""},"categories":[15],"tags":[13,14],"class_list":["post-6362","post","type-post","status-publish","format-standard","hentry","category-glossary","tag-glossary","tag-ng"],"_links":{"self":[{"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/posts\/6362","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/comments?post=6362"}],"version-history":[{"count":1,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/posts\/6362\/revisions"}],"predecessor-version":[{"id":7243,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/posts\/6362\/revisions\/7243"}],"wp:attachment":[{"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/media?parent=6362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/categories?post=6362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/tags?post=6362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}