{"id":11162,"date":"2026-07-24T14:41:02","date_gmt":"2026-07-24T14:41:02","guid":{"rendered":"https:\/\/ic-vendor.com\/nud4700snt1g\/"},"modified":"2026-07-24T14:41:02","modified_gmt":"2026-07-24T14:41:02","slug":"nud4700snt1g","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/nud4700snt1g\/","title":{"rendered":"NUD4700SNT1G"},"content":{"rendered":"

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

The onsemi NUD4700SNT1G is an LED shunt protector that provides automatic current bypass when an LED in a series string fails open-circuit. Designed for 1W LEDs (350mA @ 3V), it features a breakdown voltage of 5.5V-7.5V, 1V on-state voltage, and AEC-Q101 qualification in a POWERMITE package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Breakdown Voltage<\/td>\n5.5V min, 7.5V max<\/td>\n<\/tr>\n
On-State Voltage<\/td>\n1.0V typ @ 350mA<\/td>\n<\/tr>\n
Off-State Current<\/td>\n100\u00b5A typ, 250\u00b5A max<\/td>\n<\/tr>\n
Holding Current<\/td>\n6mA typ<\/td>\n<\/tr>\n
Latching Current<\/td>\n35mA typ<\/td>\n<\/tr>\n
Average On-State Current<\/td>\n1.3A (on 1sq pad)<\/td>\n<\/tr>\n
Peak Off-State Voltage<\/td>\n-0.3V to 10V<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +150\u00b0C (TJ)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nPOWERMITE (DO-216AA, 2.05×2.18×1.15mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Simple two-terminal device<\/li>\n
  • Automatic reset if LED self-heals or is replaced<\/li>\n
  • Low 1V on-state voltage<\/li>\n
  • Off-state current < 250\u00b5A<\/li>\n
  • AEC-Q101 qualified (SZ prefix variant)<\/li>\n
  • Pb-free, halogen-free, RoHS compliant<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • LED headlight open-circuit protection<\/li>\n
    • High-reliability LED string protection<\/li>\n
    • Lighthouse, bridge, aircraft LED lighting<\/li>\n
    • Crowbar protection for open-circuit conditions<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The onsemi NUD4700SNT1G is an LED shunt protector that provides automatic current bypass when an LED in a series string fails open-circuit. Designed for 1W LEDs (350mA @ 3V), it features a breakdown voltage of 5.5V-7.5V, 1V on-state voltage, and AEC-Q101 qualification in a POWERMITE package. Key Specifications Breakdown Voltage 5.5V min, 7.5V […]<\/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":[13,56],"tags":[2434],"chip_brand":[182],"class_list":["post-11162","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-mosfets","tag-nud4700snt1g","chip_brand-onsemi"],"acf":{"brief_explanation":"LED shunt protector, 5.5-7.5V breakdown, 1V on-state, 350mA rated, AEC-Q101, POWERMITE","date_code":"","package_case":"POWERMITE (DO-216AA, 2.05x2.18x1.15mm)","in_stock":9456,"datasheet":"https:\/\/www.onsemi.com\/download\/data-sheet\/pdf\/nud4700-d.pdf","price":"$0.25 @ 1ku","product_introduction":"The NUD4700SNT1G from onsemi is an electronic shunt protector designed to provide a current bypass path when a single LED in a series string goes open-circuit. Placed in parallel with each LED, it remains in a high-impedance off-state under normal operation (breakdown voltage 5.5-7.5V exceeds LED forward voltage). When the LED fails open, the voltage across the shunt rises until it breaks down, conducting current with only 1V on-state voltage and maintaining string continuity. The device automatically resets if the LED heals. AEC-Q101 qualified for automotive applications.","working_principle":"The NUD4700 is a two-terminal thyristor-based shunt device. In normal operation, the LED forward voltage (typically 3V) is below the shunt breakdown voltage (5.5-7.5V), so the shunt draws minimal off-state current (less than 250\u00b5A). When the LED fails open, the full string current forces the voltage across the parallel shunt to rise. Once the breakdown voltage is reached, the shunt triggers and latches on, providing a low-impedance bypass path with approximately 1V drop. The holding current (6mA) and latching current (35mA) ensure stable on-state operation at typical LED drive currents.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>Anode<\/td>Power<\/td>Positive terminal<\/td><\/tr>
      2<\/td>Cathode<\/td>Power<\/td>Negative terminal<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive LED headlight string protection<\/li>
      • High-reliability infrastructure lighting (bridges, lighthouses)<\/li>
      • Aircraft runway LED lighting<\/li>
      • Any series LED string requiring fault tolerance<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        SZNUD4700SNT1G<\/td>onsemi<\/td>AEC-Q101 automotive prefix variant<\/td><\/tr>
        NUD4010SNT1G<\/td>onsemi<\/td>10V breakdown variant<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11162","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=11162"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11162\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=11162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=11162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=11162"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=11162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}