{"id":9824,"date":"2026-07-06T11:10:27","date_gmt":"2026-07-06T11:10:27","guid":{"rendered":"https:\/\/materialparts.com\/smcj48a-tr13\/"},"modified":"2026-07-06T11:10:27","modified_gmt":"2026-07-06T11:10:27","slug":"smcj48a-tr13","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/smcj48a-tr13\/","title":{"rendered":"SMCJ48A\/TR13"},"content":{"rendered":"<h2>\u4ea7\u54c1\u6982\u89c8<\/h2>\n<p>The SMCJ48A\/TR13 from Littelfuse is a 1500W unidirectional TVS diode in an SMC (DO-214AB) package with 48V reverse standoff voltage. It provides transient voltage suppression for protecting sensitive electronics from voltage spikes, lightning-induced surges, and switching transients.<\/p>\n<h2>\u4e3b\u8981\u89c4\u683c<\/h2>\n<ul>\n<li>Type: Unidirectional TVS Diode<\/li>\n<li>Manufacturer: Littelfuse<\/li>\n<li>Reverse Standoff Voltage (VR): 48V<\/li>\n<li>Breakdown Voltage (VBR): 53.3V min \/ 58.8V max<\/li>\n<li>Clamping Voltage (VC): 77.4V @ IPP=19.4A<\/li>\n<li>Peak Pulse Power (PPP): 1500W @ 10\/1000us<\/li>\n<li>Peak Pulse Current (IPP): 19.4A<\/li>\n<li>Leakage Current (IR): 1uA max @ VR=48V<\/li>\n<li>Forward Voltage (VF): 3.5V max @ IF=25A<\/li>\n<li>Package: SMC (DO-214AB)<\/li>\n<li>Operating Temp: -65C to +150C<\/li>\n<li>RoHS: Compliant<\/li>\n<\/ul>\n<h2>\u7279\u70b9<\/h2>\n<ul>\n<li>1500W peak pulse power dissipation for robust surge protection<\/li>\n<li>48V standoff voltage suitable for 48V telecom and industrial systems<\/li>\n<li>Low 1uA leakage current minimizes standby power<\/li>\n<li>SMC package provides compact surface-mount solution<\/li>\n<li>-65C to +150C wide operating temperature range<\/li>\n<\/ul>\n<h2>\u5e94\u7528<\/h2>\n<ul>\n<li>48V telecom power supply protection<\/li>\n<li>Industrial control system surge protection<\/li>\n<li>PoE (Power over Ethernet) equipment<\/li>\n<li>Base station surge protection<\/li>\n<li>DC power line transient suppression<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Product Overview The SMCJ48A\/TR13 from Littelfuse is a 1500W unidirectional TVS diode in an SMC (DO-214AB) package with 48V reverse standoff voltage. It provides transient voltage suppression for protecting sensitive electronics from voltage spikes, lightning-induced surges, and switching transients. Key Specifications Type: Unidirectional TVS Diode Manufacturer: Littelfuse Reverse Standoff Voltage (VR): 48V Breakdown Voltage (VBR): [&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":[19,13],"tags":[1110],"chip_brand":[200],"class_list":["post-9824","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","tag-smcj48a-tr13","chip_brand-littelfuse"],"acf":{"brief_explanation":"1500W unidirectional TVS, 48V standoff, 77.4V clamp, SMC DO-214AB, Littelfuse","date_code":"","package_case":"SMC (DO-214AB) (7.11 x 6.22 x 2.42mm)","in_stock":12457,"datasheet":"https:\/\/www.littelfuse.com\/products\/tvs-diodes\/smcj.aspx","price":"$0.45 @ 1ku","product_introduction":"The SMCJ48A\/TR13 from Littelfuse is a 1500W unidirectional TVS diode with 48V reverse standoff, 77.4V clamping voltage at 19.4A, and 1uA leakage in an SMC (DO-214AB) package for 48V system surge protection.","working_principle":"The TVS diode operates in reverse breakdown mode. Under normal operating conditions (voltage below VR=48V), the diode presents high impedance with only 1uA leakage current. When a transient voltage exceeds the breakdown voltage (VBR), the diode avalanches and clamps the voltage to a safe level (VC=77.4V) while shunting the surge current. After the transient passes, the diode returns to its high-impedance state. The unidirectional configuration protects against positive transients only; for bidirectional protection, use the SMCJ48CA variant.","pin_description":"<table><tr><th>Pin<\/th><th>Name<\/th><th>Function<\/th><\/tr><tr><td>1<\/td><td>Cathode<\/td><td>Negative terminal (marked with band)<\/td><\/tr><tr><td>2<\/td><td>Anode<\/td><td>Positive terminal<\/td><\/tr><\/table>","application_scenarios":"<ul><li>48V telecom power supply protection<\/li><li>Industrial control system surge protection<\/li><li>PoE (Power over Ethernet) equipment<\/li><li>DC power line transient suppression<\/li><\/ul>","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>Key Spec<\/th><th>Package<\/th><\/tr><tr><td>SMCJ48CA<\/td><td>Littelfuse<\/td><td>1500W 48V bidirectional TVS<\/td><td>SMC<\/td><\/tr><tr><td>5.0SMCJ48A<\/td><td>Diodes Inc<\/td><td>1500W 48V unidirectional TVS<\/td><td>SMC<\/td><\/tr><tr><td>P6SMB48A<\/td><td>Littelfuse<\/td><td>600W 48V unidirectional TVS<\/td><td>SMB<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9824","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=9824"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9824\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9824"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}