{"id":10408,"date":"2026-07-19T13:08:04","date_gmt":"2026-07-19T13:08:04","guid":{"rendered":"https:\/\/ic-vendor.com\/1801-8731\/"},"modified":"2026-07-19T13:08:04","modified_gmt":"2026-07-19T13:08:04","slug":"1801-8731","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/1801-8731\/","title":{"rendered":"1801.8731"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The Schurter 1801.8731 is a time-lag (T) miniature fuse from the SPT series, rated at 250VAC with a 6.3 x 32mm form factor. Designed for primary protection in equipment per IEC\/UL 62368-1, it features a sand-filled glass tube with nickel-plated copper alloy end caps. The time-lag characteristic provides tolerance to inrush currents while ensuring reliable overcurrent protection. It operates over the ambient temperature range of -40\u00b0C to +85\u00b0C with a climatic category of 40\/085\/21 per IEC 60068-1.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Series<\/td>\nSPT 6.3×32<\/td>\n<\/tr>\n
Rated Voltage<\/td>\n250 VAC<\/td>\n<\/tr>\n
Characteristic<\/td>\nTime-Lag (T)<\/td>\n<\/tr>\n
Tube Size<\/td>\n6.3 x 32 mm<\/td>\n<\/tr>\n
Breaking Capacity<\/td>\nUp to 20 kA (H version)<\/td>\n<\/tr>\n
Tube Material<\/td>\nGlass with sand filling<\/td>\n<\/tr>\n
End Caps<\/td>\nCopper alloy, nickel-plated<\/td>\n<\/tr>\n
Ambient Temperature<\/td>\n-40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +85 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n
Climatic Category<\/td>\n40\/085\/21<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Time-lag characteristic tolerates inrush currents<\/li>\n

Sand-filled glass tube for arc suppression<\/td>\n<\/tr>\n
  • UL 248-14 and CSA 22.2 No. 248.14 approved<\/li>\n
  • Suitable for IEC\/UL 62368-1 applications<\/li>\n
  • Nickel-plated copper alloy end caps for reliable contact<\/li>\n
  • CE and UKCA declaration of conformity<\/li>\n
  • RoHS and REACH compliant<\/li>\n
  • Compact 6.3 x 32mm miniature fuse format<\/li>\n
  • Wide ambient temperature range: -40\u00b0C to +85\u00b0C<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Audio\/video and ICT equipment primary protection<\/li>\n
    • Power supply input protection<\/li>\n
    • Industrial control equipment<\/li>\n
    • Medical equipment (with appropriate approvals)<\/li>\n
    • Consumer electronics overcurrent protection<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Schurter 1801.8731 is a time-lag (T) miniature fuse from the SPT series, rated at 250VAC with a 6.3 x 32mm form factor. Designed for primary protection in equipment per IEC\/UL 62368-1, it features a sand-filled glass tube with nickel-plated copper alloy end caps. The time-lag characteristic provides tolerance to inrush currents while […]<\/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":[1707],"chip_brand":[975],"class_list":["post-10408","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-1801-8731","chip_brand-schurter"],"acf":{"brief_explanation":"Time-lag (T) miniature fuse, 250VAC, 6.3x32mm, SPT series","date_code":"","package_case":"6.3 x 32 mm cartridge (glass tube, sand-filled)","in_stock":5274,"datasheet":"https:\/\/www.schurter.com\/en\/datasheet\/SPT%206.3x32","price":"","product_introduction":"The Schurter 1801.8731 is a time-lag (T) miniature fuse from the SPT 6.3x32 series designed for primary protection in electrical and electronic equipment. The sand-filled glass tube provides arc suppression during fault conditions, while the time-lag characteristic allows for temporary inrush currents without nuisance tripping. Approved to UL 248-14 and CSA 22.2 No. 248.14 standards, the fuse is suitable for applications complying with IEC\/UL 62368-1 safety requirements. The nickel-plated copper alloy end caps ensure reliable electrical contact in fuse holders and clips.","working_principle":"The 1801.8731 operates as an overcurrent protective device. 1) Fuse Element Subsystem: A specially designed wire element within the glass tube has a controlled melting characteristic. The time-lag (T) profile allows sustained currents at 1.1x rated current for over 4 hours, while tripping at higher multiples with defined time-current characteristics. 2) Arc Suppression Subsystem: The sand filling inside the tube quenches the electrical arc that forms when the element melts, preventing continued current flow and potential fire hazard. 3) Thermal Response Subsystem: The element resistance converts overcurrent into heat; when the melting temperature is reached, the element opens and interrupts the circuit. The time-lag construction uses a larger thermal mass, requiring more energy to melt, which provides inrush current tolerance.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>End Cap A<\/td>Terminal<\/td>First electrical contact (nickel-plated copper alloy)<\/td><\/tr>
      2<\/td>End Cap B<\/td>Terminal<\/td>Second electrical contact (nickel-plated copper alloy)<\/td><\/tr><\/table>","application_scenarios":"
      • ICT Equipment: Primary overcurrent protection in audio\/video and IT equipment<\/li>
      • Power Supplies: Input protection for switched-mode and linear power supplies<\/li>
      • Industrial Control: Overcurrent protection in control panels and PLCs<\/li>
      • Consumer Electronics: Equipment protection in home appliances<\/li>
      • Medical Devices: Primary circuit protection (with appropriate certification)<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Schurter<\/td>1801.8730<\/td>6.3x32mm<\/td>Same series, different current rating<\/td><\/tr>
        Littelfuse<\/td>0218003.MXP<\/td>5x20mm<\/td>Time-lag fuse, smaller format<\/td><\/tr>
        Bussmann<\/td>S505-050-R<\/td>5x20mm<\/td>Time-lag fuse, different format<\/td><\/tr>
        Schurter<\/td>0034.5710<\/td>5x20mm<\/td>Time-lag fuse, 5x20mm SMD variant<\/td><\/tr>
        Bel Fuse<\/td>5ST 250<\/td>5x20mm<\/td>Time-lag glass tube fuse<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/comments?post=10408"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10408\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=10408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=10408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=10408"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10408"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}