{"id":2579,"date":"2022-11-08T13:13:24","date_gmt":"2022-11-08T13:13:24","guid":{"rendered":"https:\/\/ibex.tech\/resources\/?p=2579"},"modified":"2022-11-08T13:47:19","modified_gmt":"2022-11-08T13:47:19","slug":"dc-power-input-surge-protection","status":"publish","type":"post","link":"https:\/\/ibex.tech\/resources\/geek-area\/electronics\/surge-protection\/dc-power-input-surge-protection","title":{"rendered":"DC power input surge protection"},"content":{"rendered":"\n<p>For low voltage power inputs, e.g. when using an external AC adapter or say a vehicle low DC voltage supply, electrical threats include lightning surges, ESD and external equipment switching spikes.<br><\/p>\n\n\n\n<p>A fuse or resettable PTC can be used for short circuit and overload current conditions.<\/p>\n\n\n\n<p>For surge and ESD protection, an MOV or TVS diode can be used.<\/p>\n\n\n\n<p>The magnitude of the surge transient needs to be understood. If more severe surges are expected then C-III or UltraMOV varistors or higher-rated diodes (e.g. 600W, 1,500W) need to be selected. If the only threat is expected to be ESD, then multilayer chip varistors can be selected.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Good resources<\/h4>\n\n\n\n<p><a href=\"https:\/\/www.littelfuse.com\/media?resourcetype=application-guides&amp;itemid=1ce81d7f-0999-4d92-9938-926ae74c8db0&amp;filename=littelfuse-product-selection-guide.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.littelfuse.com\/media?resourcetype=application-guides&amp;itemid=1ce81d7f-0999-4d92-9938-926ae74c8db0&amp;filename=littelfuse-product-selection-guide.pdf<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>For low voltage power inputs, e.g. when using an external AC adapter or say a vehicle low DC voltage supply, electrical threats include lightning surges, ESD and external equipment switching spikes. A fuse or resettable PTC can be used for short circuit and overload current conditions. For surge and ESD protection, an MOV or TVS [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[],"class_list":["post-2579","post","type-post","status-publish","format-standard","hentry","category-surge-protection"],"_links":{"self":[{"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/posts\/2579","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/comments?post=2579"}],"version-history":[{"count":2,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/posts\/2579\/revisions"}],"predecessor-version":[{"id":2582,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/posts\/2579\/revisions\/2582"}],"wp:attachment":[{"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/media?parent=2579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/categories?post=2579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/tags?post=2579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}