{"id":9802,"date":"2026-07-06T10:51:21","date_gmt":"2026-07-06T10:51:21","guid":{"rendered":"https:\/\/materialparts.com\/rxef110-2\/"},"modified":"2026-07-06T10:51:21","modified_gmt":"2026-07-06T10:51:21","slug":"rxef110-2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/rxef110-2\/","title":{"rendered":"RXEF110-2"},"content":{"rendered":"<h2>\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n<p>The RXEF110-2 from TE Connectivity \/ Littelfuse (formerly Raychem) is a PolySwitch radial-leaded PTC resettable fuse with 1.1A hold current, 2.2A trip current, and 72V maximum voltage rating. The -2 suffix indicates the lead form variant.<\/p>\n<h2>\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n<ul>\n<li>Type: Radial PTC Resettable Fuse (PolySwitch)<\/li>\n<li>Manufacturer: TE Connectivity \/ Littelfuse<\/li>\n<li>Hold Current: 1.1A<\/li>\n<li>Trip Current: 2.2A<\/li>\n<li>Max Voltage: 72VAC \/ 72VDC<\/li>\n<li>Max Fault Current: 40A<\/li>\n<li>Initial Resistance: 0.15-0.25 Ohm<\/li>\n<li>Post-Trip Resistance: 0.38 Ohm max<\/li>\n<li>Typical Power Dissipation: 1.5W<\/li>\n<li>Trip Time: 8.2s max @ 5.5A<\/li>\n<li>Package: Radial (12.8 x 17.5 x 5.8mm)<\/li>\n<li>Operating Temp: -40C to +85C<\/li>\n<li>Approvals: UL, CSA, TUV, CQC<\/li>\n<li>RoHS: Compliant<\/li>\n<\/ul>\n<h2>\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n<ul>\n<li>1.1A hold current with 2.2A trip &#8211; 2:1 ratio for reliable protection<\/li>\n<li>72V rating suitable for telecom and industrial applications<\/li>\n<li>Resettable &#8211; no replacement needed after trip<\/li>\n<li>UL, CSA, TUV, CQC safety approvals<\/li>\n<li>Radial leaded for through-hole mounting<\/li>\n<\/ul>\n<h2>\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n<ul>\n<li>Satellite video receivers<\/li>\n<li>Industrial controls<\/li>\n<li>Transformer protection<\/li>\n<li>Computer motherboards<\/li>\n<li>USB hubs and peripherals<\/li>\n<li>Battery packs<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Product Overview The RXEF110-2 from TE Connectivity \/ Littelfuse (formerly Raychem) is a PolySwitch radial-leaded PTC resettable fuse with 1.1A hold current, 2.2A trip current, and 72V maximum voltage rating. The -2 suffix indicates the lead form variant. Key Specifications Type: Radial PTC Resettable Fuse (PolySwitch) Manufacturer: TE Connectivity \/ Littelfuse Hold Current: 1.1A Trip [&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":[13,55],"tags":[1079],"chip_brand":[234],"class_list":["post-9802","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-transistors","tag-rxef110-2","chip_brand-te-connectivity"],"acf":{"brief_explanation":"1.1A hold \/ 2.2A trip PTC resettable fuse, 72V, radial, TE Connectivity","date_code":"","package_case":"Radial Leaded (12.8 x 17.5 x 5.8mm)","in_stock":10089,"datasheet":"https:\/\/www.littelfuse.com\/products\/fuses\/polyswitch-resettable-pptc-devices\/radial-leaded\/rxef","price":"$0.45 @ 1ku","product_introduction":"The RXEF110-2 from TE Connectivity\/Littelfuse is a radial-leaded PTC resettable fuse with 1.1A hold, 2.2A trip, 72V rating, and UL\/CSA\/TUV\/CQC approvals for overcurrent protection.","working_principle":"The PolySwitch PTC device uses a conductive polymer composite that maintains low resistance under normal operating current. When an overcurrent condition occurs, the resulting Joule heating raises the polymer temperature above its glass transition point, causing thermal expansion that separates the conductive carbon black pathways. This increases resistance by several orders of magnitude, limiting the fault current to a safe level. When the fault is removed and the device cools, the conductive paths reform and the device resets to its low-resistance state.","pin_description":"<table><tr><th>Pin<\/th><th>Name<\/th><th>Function<\/th><\/tr><tr><td>1<\/td><td>Lead 1<\/td><td>One terminal of PTC element<\/td><\/tr><tr><td>2<\/td><td>Lead 2<\/td><td>Other terminal of PTC element (5.8mm spacing)<\/td><\/tr><\/table>","application_scenarios":"<ul><li>Satellite video receivers<\/li><li>Industrial controls<\/li><li>Computer motherboards<\/li><li>USB hubs and peripherals<\/li><li>Battery packs<\/li><\/ul>","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>Key Spec<\/th><th>Package<\/th><\/tr><tr><td>RXEF110<\/td><td>TE\/Littelfuse<\/td><td>1.1A 72V radial<\/td><td>Different lead form<\/td><\/tr><tr><td>RUEF110<\/td><td>TE\/Littelfuse<\/td><td>1.1A 30V radial<\/td><td>Smaller package<\/td><\/tr><tr><td>MF-R110<\/td><td>Bourns<\/td><td>1.1A 30V radial<\/td><td>Radial leaded<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9802","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=9802"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9802\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=9802"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=9802"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=9802"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=9802"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}