{"id":11274,"date":"2026-07-26T04:04:14","date_gmt":"2026-07-26T04:04:14","guid":{"rendered":"https:\/\/ic-vendor.com\/sg731jttd330k\/"},"modified":"2026-07-26T04:04:14","modified_gmt":"2026-07-26T04:04:14","slug":"sg731jttd330k","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/sg731jttd330k\/","title":{"rendered":"SG731JTTD330K"},"content":{"rendered":"

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

The YAGEO SG731JTTD330K is an NTC inrush current limiting thermistor with 33 ohm zero-power resistance at 25C. Leaded disc construction for power supply inrush suppression.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n
Resistance @ 25C<\/td>\n33 ohm<\/td>\n<\/tr>\n
Tolerance<\/td>\n+\/-20%<\/td>\n<\/tr>\n
\u7c7b\u578b<\/td>\nNTC Inrush Limiter<\/td>\n<\/tr>\n
B-Constant<\/td>\n~3950K<\/td>\n<\/tr>\n
Operating Temp<\/td>\n-40 to +170C<\/td>\n<\/tr>\n
Approval<\/td>\nUL, TUV<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nRadial Leaded Disc<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • NTC inrush current limiting function<\/li>\n
  • 33 ohm resistance limits turn-on surge<\/li>\n
  • Self-heating reduces resistance at operating current<\/li>\n
  • UL and TUV safety approvals<\/li>\n
  • RoHS and halogen-free compliant<\/li>\n
  • Wide -40 to 170C range<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • SMPS inrush limiter<\/li>\n
    • AC adapter surge protection<\/li>\n
    • Industrial inverter pre-charge<\/li>\n
    • Consumer electronics soft-start<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The YAGEO SG731JTTD330K is an NTC inrush current limiting thermistor with 33 ohm zero-power resistance at 25C. Leaded disc construction for power supply inrush suppression. Key Specifications Resistance @ 25C 33 ohm Tolerance +\/-20% Type NTC Inrush Limiter B-Constant ~3950K Operating Temp -40 to +170C Approval UL, TUV Package Radial Leaded Disc Features […]<\/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":[13,42],"tags":[2550],"chip_brand":[312],"class_list":["post-11274","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-sensors","tag-sg731jttd330k","chip_brand-yageo"],"acf":{"brief_explanation":"NTC inrush thermistor, 33ohm R25, radial leaded, UL\/TUV, -40 to 170C","date_code":"","package_case":"Radial Leaded Disc (8.5mm typ)","in_stock":12889,"datasheet":"https:\/\/www.farnell.com\/datasheets\/3217126.pdf","price":"$0.30 @ 1ku","product_introduction":"The SG731JTTD330K from YAGEO is an NTC inrush current limiting thermistor with 33 ohm zero-power resistance at 25C. At startup the 33 ohm resistance limits inrush current. Self-heating reduces resistance during operation, minimizing steady-state power loss. UL and TUV safety approvals for power supply applications.","working_principle":"Made from sintered metal oxide ceramic whose resistance decreases exponentially with temperature. At 25C resistance is 33 ohm, limiting inrush current. Steady-state current causes I2R self-heating, reducing resistance to 0.5-2 ohm at Imax for minimal power loss. Cools and recovers when power is removed.","pin_description":"
      Terminal<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>L1<\/td>NTC element<\/td><\/tr>
      2<\/td>L2<\/td>NTC element<\/td><\/tr><\/table>","application_scenarios":"
      • SMPS primary inrush limiter<\/li>
      • AC\/DC adapter surge suppressor<\/li>
      • Capacitor bank charging limiter<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        NTD07-033M<\/td>YAGEO<\/td>7mm disc, lower current<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11274","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=11274"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11274\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=11274"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=11274"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=11274"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=11274"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}