{"id":9759,"date":"2026-07-05T12:48:46","date_gmt":"2026-07-05T12:48:46","guid":{"rendered":"https:\/\/materialparts.com\/ssa-2-250a\/"},"modified":"2026-07-05T12:48:46","modified_gmt":"2026-07-05T12:48:46","slug":"ssa-2-250a","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/ssa-2-250a\/","title":{"rendered":"SSA-2-250A"},"content":{"rendered":"<h2>\u4ea7\u54c1\u6982\u89c8<\/h2>\n<p>The SSA-2-250A from Bel Fuse is a surface-mount fast-acting fuse in a 1206 (3216 metric) package. Rated at 2A and 250VAC with 100A breaking capacity, it provides overcurrent protection for power supplies, adapters, and electronic equipment.<\/p>\n<h2>\u4e3b\u8981\u89c4\u683c<\/h2>\n<ul>\n<li>Type: Surface Mount Fast-Acting Fuse<\/li>\n<li>Manufacturer: Bel Fuse<\/li>\n<li>Current Rating: 2A<\/li>\n<li>Voltage Rating: 250VAC<\/li>\n<li>Breaking Capacity: 100A @ 250VAC<\/li>\n<li>Response Time: Fast Acting<\/li>\n<li>Package: 1206 (3216 Metric)<\/li>\n<li>Cold Resistance: 0.045 Ohm<\/li>\n<li>I2t Melting: 0.8 A2s<\/li>\n<li>Operating Temp: -55C to +125C<\/li>\n<li>RoHS: Compliant<\/li>\n<\/ul>\n<h2>\u7279\u70b9<\/h2>\n<ul>\n<li>Compact 1206 SMD footprint for high-density PCBs<\/li>\n<li>Fast-acting response for sensitive component protection<\/li>\n<li>100A high breaking capacity<\/li>\n<li>Low 0.045 Ohm cold resistance for minimal voltage drop<\/li>\n<li>Wide -55C to +125C operating temperature<\/li>\n<li>RoHS compliant<\/li>\n<\/ul>\n<h2>\u5e94\u7528<\/h2>\n<ul>\n<li>Power supply overcurrent protection<\/li>\n<li>AC\/DC adapter output protection<\/li>\n<li>Battery charger circuit protection<\/li>\n<li>Consumer electronics input protection<\/li>\n<li>Industrial equipment secondary side protection<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Product Overview The SSA-2-250A from Bel Fuse is a surface-mount fast-acting fuse in a 1206 (3216 metric) package. Rated at 2A and 250VAC with 100A breaking capacity, it provides overcurrent protection for power supplies, adapters, and electronic equipment. Key Specifications Type: Surface Mount Fast-Acting Fuse Manufacturer: Bel Fuse Current Rating: 2A Voltage Rating: 250VAC Breaking [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13],"tags":[1030],"chip_brand":[927],"class_list":["post-9759","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-ssa-2-250a","chip_brand-bel-fuse"],"acf":{"brief_explanation":"1206 SMD fuse, 2A, 250VAC, fast-acting, 100A breaking, 0.045 Ohm, -55~125C, Bel Fuse","date_code":"","package_case":"1206 (3216 Metric \/ 3.2 x 1.6 x 0.9mm)","in_stock":6902,"datasheet":"https:\/\/www.belfuse.com\/product\/ssa-2-250a","price":"$0.15 @ 1ku","product_introduction":"The SSA-2-250A from Bel Fuse is a 1206 surface-mount fast-acting fuse rated at 2A\/250VAC with 100A breaking capacity and 0.045 Ohm cold resistance for power supply and adapter overcurrent protection.","working_principle":"The fuse element is a precisely dimensioned metallic conductor within a ceramic body. When current exceeds the 2A rating, resistive heating causes the element to melt and interrupt the circuit. The fast-acting characteristic means the fuse opens quickly on overcurrent, protecting downstream sensitive components. The I2t value of 0.8 A2s quantifies the thermal energy required to melt the element.","pin_description":"<table><tr><th>Pin<\/th><th>Name<\/th><th>Function<\/th><\/tr><tr><td>1<\/td><td>Terminal 1<\/td><td>Circuit side (solder pad)<\/td><\/tr><tr><td>2<\/td><td>Terminal 2<\/td><td>Load side (solder pad)<\/td><\/tr><\/table>","application_scenarios":"<ul><li>Power supply overcurrent protection<\/li><li>AC\/DC adapter output protection<\/li><li>Battery charger circuit protection<\/li><li>Consumer electronics input protection<\/li><\/ul>","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>Spec1<\/th><th>Spec2<\/th><\/tr><tr><td>0ZCJ0020FF2E<\/td><td>Bel Fuse<\/td><td>2A 125VDC<\/td><td>Similar series<\/td><\/tr><tr><td>0437002NR<\/td><td>Littelfuse<\/td><td>2A 125V<\/td><td>1206 fast<\/td><\/tr><tr><td>MFU1206FF02000P100<\/td><td>Vishay<\/td><td>2A fast<\/td><td>1206 package<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9759","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=9759"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9759\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9759"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}