{"id":9771,"date":"2026-07-06T10:10:23","date_gmt":"2026-07-06T10:10:23","guid":{"rendered":"https:\/\/materialparts.com\/sr4w035\/"},"modified":"2026-07-06T10:10:23","modified_gmt":"2026-07-06T10:10:23","slug":"sr4w035","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/sr4w035\/","title":{"rendered":"SR4W035"},"content":{"rendered":"<h2>Productos<\/h2>\n<p>The SR4W035 is a surface-mount fuse from Schurter, likely from the USL 0603 series. Based on the part number convention, it is a 35mA super-quick-acting (FF) fuse rated at 63VDC in a 0603 (1.6&#215;0.8mm) package. Designed for intrinsically safe electronics and DC secondary protection applications requiring very low current and fast interruption.<\/p>\n<h2>Especificaciones<\/h2>\n<ul>\n<li>Type: Surface Mount Super-Quick-Acting Fuse (FF)<\/li>\n<li>Manufacturer: Schurter<\/li>\n<li>Current Rating: 35mA<\/li>\n<li>Voltage Rating: 63 VDC<\/li>\n<li>Breaking Capacity: 50A @ 63VDC<\/li>\n<li>Characteristic: Super-Quick-Acting FF<\/li>\n<li>Package: 0603 (1.6 x 0.8mm)<\/li>\n<li>Voltage Drop: 310mV max @ 1.0 x In<\/li>\n<li>Cold Resistance: 7.3 Ohm typical<\/li>\n<li>Melting I2t: 0.18 A2s typical @ 10 x In<\/li>\n<li>Operating Temp: -50C to +125C<\/li>\n<li>MSL: 1 (Unlimited)<\/li>\n<li>Approvals: UL UR (File E41599), CSA<\/li>\n<li>RoHS: Compliant<\/li>\n<li>Housing: Glass<\/li>\n<li>Terminals: Copper, Ni\/Au-plated<\/li>\n<\/ul>\n<h2>Caracter\u00edsticas<\/h2>\n<ul>\n<li>Ultra-low 35mA current rating for sensitive circuit protection<\/li>\n<li>Super-quick-acting FF characteristic for fastest response<\/li>\n<li>Hermetically sealed glass body &#8211; impermeable to potting compound<\/li>\n<li>0603 ultra-compact footprint for high-density PCBs<\/li>\n<li>Ni\/Au-plated terminals for reliable solder joints<\/li>\n<li>UL and CSA approved for safety compliance<\/li>\n<\/ul>\n<h2>Aplicaciones<\/h2>\n<ul>\n<li>Intrinsically safe electronics (ATEX\/IECEx)<\/li>\n<li>Control electronics protection<\/li>\n<li>DC secondary protection<\/li>\n<li>Low current solid state circuit protection<\/li>\n<li>Battery-powered device protection<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Product Overview The SR4W035 is a surface-mount fuse from Schurter, likely from the USL 0603 series. Based on the part number convention, it is a 35mA super-quick-acting (FF) fuse rated at 63VDC in a 0603 (1.6&#215;0.8mm) package. Designed for intrinsically safe electronics and DC secondary protection applications requiring very low current and fast interruption. Key [&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":[1042],"chip_brand":[975],"class_list":["post-9771","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-sr4w035","chip_brand-schurter"],"acf":{"brief_explanation":"35mA SMD fuse, 63VDC, FF super-quick, 0603, glass body, Schurter USL series","date_code":"","package_case":"0603 (1.6 x 0.8 x 0.53mm)","in_stock":13709,"datasheet":"https:\/\/at.schurter.com\/en\/datasheet\/typ_USL_0603.pdf","price":"$0.45 @ 1ku","product_introduction":"The SR4W035 from Schurter is a 35mA super-quick-acting surface-mount fuse rated at 63VDC in a 0603 glass package, designed for intrinsically safe electronics and DC secondary protection.","working_principle":"The fuse element is a precisely dimensioned metallic conductor within a hermetically sealed glass body. When current exceeds the 35mA rating, resistive heating causes the element to melt and interrupt the circuit within microseconds. The super-quick-acting (FF) characteristic ensures the fastest possible interruption, critical for protecting sensitive semiconductor components. The hermetic glass seal prevents potting compound ingress, essential for ATEX\/IECEx intrinsically safe applications.","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>Intrinsically safe electronics (ATEX\/IECEx)<\/li><li>Control electronics protection<\/li><li>DC secondary protection<\/li><li>Low current solid state circuit protection<\/li><\/ul>","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>Spec1<\/th><th>Spec2<\/th><\/tr><tr><td>0603FS035-1A<\/td><td>Bel Fuse<\/td><td>35mA 32VDC<\/td><td>0603 fast<\/td><\/tr><tr><td>0603FS050-1A<\/td><td>Bel Fuse<\/td><td>50mA 32VDC<\/td><td>0603 fast<\/td><\/tr><tr><td>SR4W050<\/td><td>Schurter<\/td><td>50mA 63VDC<\/td><td>Same series<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/9771","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=9771"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/9771\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=9771"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=9771"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=9771"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=9771"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}