{"id":10349,"date":"2026-07-19T12:25:38","date_gmt":"2026-07-19T12:25:38","guid":{"rendered":"https:\/\/ic-vendor.com\/0154004-drt\/"},"modified":"2026-07-19T12:25:38","modified_gmt":"2026-07-19T12:25:38","slug":"0154004-drt","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/0154004-drt\/","title":{"rendered":"0154004.DRT"},"content":{"rendered":"

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

The 0154004.DRT is an OMNI-BLOK fuse and holder assembly from Littelfuse’s 154 Series. It combines a NANO\u00b2 Slo-Blo\u00ae (time-delay) surface mount fuse with a holder in a single package, enabling easy one-step PCB installation and subsequent fuse replacement without soldering.<\/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\n
Fuse Current Rating<\/td>\n4A<\/td>\n<\/tr>\n
Voltage Rating AC<\/td>\n125VAC<\/td>\n<\/tr>\n
Voltage Rating DC<\/td>\n125VDC<\/td>\n<\/tr>\n
Fuse Characteristic<\/td>\nSlow Blow (Time Delay \/ Slo-Blo)<\/td>\n<\/tr>\n
Breaking Capacity<\/td>\n50A (AC & DC)<\/td>\n<\/tr>\n
Typical Melting I\u00b2t<\/td>\n53.72 A\u00b2s<\/td>\n<\/tr>\n
Fuse Size \/ Group<\/td>\nNANO\u00b2 (within 154 holder)<\/td>\n<\/tr>\n
Package Dimensions<\/td>\n9.73 \u00d7 5.03 \u00d7 3.81mm<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-55 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +125 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n
Agency Approvals<\/td>\nCSA, PSE, UL<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • One-step PCB installation \u2014 fuse and holder combined<\/li>\n
  • Easy fuse replacement without soldering<\/li>\n
  • Slow-blow characteristic for inrush current tolerance<\/li>\n
  • Wide operating temperature range (-55 to 125\u00b0C)<\/li>\n
  • 260\u00b0C reflow capable fuseholder<\/li>\n
  • UL94 V-0 heat-resistant holder<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Power supply overcurrent protection<\/li>\n
    • Industrial electronics<\/li>\n
    • Telecom equipment<\/li>\n
    • Computer and server boards<\/li>\n
    • Audio\/visual equipment<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The 0154004.DRT is an OMNI-BLOK fuse and holder assembly from Littelfuse’s 154 Series. It combines a NANO\u00b2 Slo-Blo\u00ae (time-delay) surface mount fuse with a holder in a single package, enabling easy one-step PCB installation and subsequent fuse replacement without soldering. Key Specifications Fuse Current Rating 4A Voltage Rating AC 125VAC Voltage Rating DC […]<\/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":[60],"tags":[1623,1624,1625],"chip_brand":[200],"class_list":["post-10349","post","type-post","status-publish","format-standard","hentry","category-passive-components","tag-0154004-drt","tag-fuse","tag-omni-blok","chip_brand-littelfuse"],"acf":{"brief_explanation":"OMNI-BLOK Fuse+Holder 4A Slow-Blow 125V NANO\u00b2, -55~125\u00b0C","date_code":"","package_case":"9.73 \u00d7 5.03 \u00d7 3.81mm, SMD","in_stock":5600,"datasheet":"https:\/\/www.littelfuse.com\/media?res=700087&download=1","price":"","product_introduction":"The 0154004.DRT is an OMNI-BLOK fuse and holder assembly from Littelfuse's 154 Series, combining a 4A slow-blow NANO\u00b2 surface mount fuse with a holder in a single 9.73 \u00d7 5.03 \u00d7 3.81mm package. This innovative design allows the fuse and holder to be installed on a PCB in a single soldering step, while enabling easy fuse replacement afterwards without exposing the PCB to the detrimental effects of solder heat. The slow-blow characteristic accommodates inrush currents without nuisance opening.","working_principle":"The OMNI-BLOK assembly integrates a NANO\u00b2 slow-blow fuse within a surface-mount holder. The slow-blow fuse element is designed with a thermal mass that absorbs short-duration inrush currents (such as power-on surges) without opening, while still providing reliable overcurrent protection for sustained fault conditions. When a sustained overcurrent exceeds 4A, the fuse element heats up and eventually melts, interrupting the circuit. The holder allows the spent fuse to be removed and replaced with a new NANO\u00b2 fuse without desoldering.","pin_description":"
      Terminal<\/th>Function<\/th><\/tr>
      1<\/td>Input terminal (fuse holder contact)<\/td><\/tr>
      2<\/td>Output terminal (fuse holder contact)<\/td><\/tr><\/table>","application_scenarios":"
      • AC\/DC power supply output overcurrent protection<\/li>
      • Industrial control panel circuit protection<\/li>
      • Telecom rack equipment fuse protection<\/li>
      • Computer motherboard and server board protection<\/li>
      • Audio\/visual equipment power supply protection<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Rating<\/th>Characteristic<\/th>Notes<\/th><\/tr>
        Littelfuse<\/td>0154002.DR<\/td>2A<\/td>Very Fast-Acting<\/td>Same holder, different fuse<\/td><\/tr>
        Littelfuse<\/td>0154007.DRT<\/td>7A<\/td>Slow Blow<\/td>Same holder, higher current<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10349","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=10349"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10349\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=10349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=10349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=10349"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10349"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}