{"id":10410,"date":"2026-07-19T13:08:08","date_gmt":"2026-07-19T13:08:08","guid":{"rendered":"https:\/\/ic-vendor.com\/1275-9043\/"},"modified":"2026-07-19T13:08:08","modified_gmt":"2026-07-19T13:08:08","slug":"1275-9043","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/1275-9043\/","title":{"rendered":"1275.9043"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The Schurter 1275.9043 is a surface mount fuse from the UMT-W series, featuring a super-time-lag (TT) characteristic with a 5.3 x 16mm ceramic body. Rated at 125VAC\/125VDC, it offers a breaking capacity of up to 1000A. The impermeable ceramic construction makes it suitable for intrinsically safe applications per ATEX and IECEx requirements. The device features precisely defined melting times and a very high melting integral, operating over the ambient temperature range of -55\u00b0C to +125\u00b0C.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Series<\/td>\nUMT-W<\/td>\n<\/tr>\n
Rated Voltage<\/td>\n125 VAC \/ 125 VDC<\/td>\n<\/tr>\n
Characteristic<\/td>\nSuper-Time-Lag (TT)<\/td>\n<\/tr>\n
Package Size<\/td>\n5.3 x 16 mm (SMD)<\/td>\n<\/tr>\n
Breaking Capacity<\/td>\nUp to 1000A<\/td>\n<\/tr>\n
Tube Material<\/td>\nCeramic<\/td>\n<\/tr>\n
Ambient Temperature<\/td>\n-55\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
Climatic Category<\/td>\n55\/125\/21<\/td>\n<\/tr>\n
Mounting<\/td>\nSMD (surface mount)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Super-time-lag (TT) characteristic for high inrush current tolerance<\/li>\n
  • Ceramic body impermeable to potting compound for ATEX\/IECEx<\/li>\n
  • Very high melting integral (I2t) for pulse-withstanding applications<\/li>\n
  • Precisely defined melting times (min\/max) for predictable protection<\/li>\n
  • UL 248-14 and IEC 60127-7 approved<\/li>\n
  • Surface mount package for automated PCB assembly<\/li>\n
  • AEC-Q200 compliant for automotive applications<\/li>\n
  • Wide ambient temperature range: -55\u00b0C to +125\u00b0C<\/li>\n
  • Fail-safe device suitable for intrinsic safety<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Intrinsically safe equipment (ATEX\/IECEx)<\/li>\n
    • \u5de5\u4e1a\u63a7\u5236\u548c\u81ea\u52a8\u5316<\/li>\n
    • Automotive electronics<\/li>\n
    • Power supply protection with high inrush currents<\/li>\n
    • Mission-critical safety systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Schurter 1275.9043 is a surface mount fuse from the UMT-W series, featuring a super-time-lag (TT) characteristic with a 5.3 x 16mm ceramic body. Rated at 125VAC\/125VDC, it offers a breaking capacity of up to 1000A. The impermeable ceramic construction makes it suitable for intrinsically safe applications per ATEX and IECEx requirements. The […]<\/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":[1709],"chip_brand":[975],"class_list":["post-10410","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-1275-9043","chip_brand-schurter"],"acf":{"brief_explanation":"SMD super-time-lag (TT) fuse, 125VAC\/125VDC, 5.3x16mm ceramic","date_code":"","package_case":"5.3 x 16 mm SMD ceramic","in_stock":6847,"datasheet":"https:\/\/www.schurter.com\/en\/datasheet\/typ_UMT-W.pdf","price":"","product_introduction":"The Schurter 1275.9043 is a surface mount fuse from the UMT-W series featuring a super-time-lag (TT) characteristic and ceramic body construction. The impermeable ceramic design makes it suitable for use as a fail-safe device in intrinsically safe applications according to ATEX and IECEx requirements. With a very high melting integral and precisely defined melting times, the UMT-W provides reliable overcurrent protection in applications with significant inrush currents. The surface mount package enables automated PCB assembly in compact industrial and automotive designs.","working_principle":"The 1275.9043 operates as a super-time-lag overcurrent protective device. 1) Fuse Element Subsystem: A specially engineered element within the ceramic body has a super-time-lag (TT) characteristic, tolerating very high inrush currents and pulse loads without nuisance tripping. The element design provides a very high melting integral (I2t). 2) Arc Suppression Subsystem: The ceramic body with internal filling provides superior arc quenching compared to glass tube designs, enabling higher breaking capacity. 3) Sealed Construction Subsystem: The impermeable ceramic body prevents potting compound ingress, making it suitable for intrinsic safety applications where the device must maintain its protective function even when encapsulated. 4) SMD Termination Subsystem: Nickel\/tin-plated terminals enable reliable reflow soldering for automated assembly.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Terminal A<\/td>Terminal<\/td>First SMD solder termination (Ni\/Sn-plated)<\/td><\/tr>
      2<\/td>Terminal B<\/td>Terminal<\/td>Second SMD solder termination (Ni\/Sn-plated)<\/td><\/tr><\/table>","application_scenarios":"
      • Intrinsic Safety: ATEX\/IECEx approved fail-safe device for hazardous environments<\/li>
      • Industrial Control: Protection in PLCs and automation equipment with high inrush<\/li>
      • Automotive: AEC-Q200 compliant for vehicle electronic modules<\/li>
      • Power Supplies: Primary protection in supplies with capacitive inrush currents<\/li>
      • Safety Systems: Mission-critical protection in medical and railway equipment<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Schurter<\/td>1275.9041<\/td>5.3x16mm<\/td>Same series, different current rating<\/td><\/tr>
        Schurter<\/td>0034.5710<\/td>5x20mm<\/td>Time-lag SMD fuse, different series<\/td><\/tr>
        Littelfuse<\/td>0155030.DR<\/td>0603<\/td>SMD fuse, smaller format<\/td><\/tr>
        Bussmann<\/td>SDA-5-R<\/td>5x16mm<\/td>SMD time-lag fuse<\/td><\/tr>
        Schurter<\/td>USF 1105<\/td>0603<\/td>Ultra-small SMD fuse variant<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10410","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=10410"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10410\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10410"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10410"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10410"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}