{"id":10800,"date":"2026-07-20T13:11:36","date_gmt":"2026-07-20T13:11:36","guid":{"rendered":"https:\/\/ic-vendor.com\/mmbt3904lt1g-2\/"},"modified":"2026-07-20T13:11:36","modified_gmt":"2026-07-20T13:11:36","slug":"mmbt3904lt1g-2","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/mmbt3904lt1g-2\/","title":{"rendered":"MMBT3904LT1G"},"content":{"rendered":"

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

The MMBT3904LT1G from ON Semiconductor is a general-purpose NPN bipolar junction transistor in a SOT-23 (TO-236-3) surface-mount package. Rated at 40 V VCEO and 200 mA IC continuous, it provides a DC current gain (hFE) of 100 to 300 and transition frequency of 300 MHz, making it ideal for switching and amplifier applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\nNPN General Purpose<\/td>\n<\/tr>\n
VCEO<\/td>\n40 V<\/td>\n<\/tr>\n
VCBO<\/td>\n60 V<\/td>\n<\/tr>\n
IC (Continuous)<\/td>\n200 mA<\/td>\n<\/tr>\n
hFE\uff08\u76f4\u6d41\u7535\u6d41\u589e\u76ca\uff09<\/td>\n100 to 300 @ 10 mA<\/td>\n<\/tr>\n
fT (Transition Frequency)<\/td>\n300 MHz<\/td>\n<\/tr>\n
\u529f\u7387\u8017\u6563<\/td>\n0.225 W<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-23 (TO-236-3)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55 to 150 degC<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Industry-standard 2N3904 in SMD package<\/li>\n
  • General-purpose NPN switching and amplification<\/li>\n
  • High current gain range of 100-300<\/li>\n
  • 300 MHz transition frequency<\/li>\n
  • Pb-free, RoHS compliant<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • General-purpose switching circuits<\/li>\n
    • Signal amplification<\/li>\n
    • Digital logic interfacing<\/li>\n
    • LED driver circuits<\/li>\n
    • Sensor signal conditioning<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MMBT3904LT1G from ON Semiconductor is a general-purpose NPN bipolar junction transistor in a SOT-23 (TO-236-3) surface-mount package. Rated at 40 V VCEO and 200 mA IC continuous, it provides a DC current gain (hFE) of 100 to 300 and transition frequency of 300 MHz, making it ideal for switching and amplifier applications. […]<\/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":[57,13],"tags":[2141],"chip_brand":[144],"class_list":["post-10800","post","type-post","status-publish","format-standard","hentry","category-insulated-gate-bipolar-transistors-igbt","category-integrated-circuits-ics","tag-mmbt3904lt1g","chip_brand-on"],"acf":{"brief_explanation":"NPN 40V 200mA general-purpose BJT, SOT-23, hFE 100-300, 300 MHz, switching\/amplifier","date_code":"","package_case":"SOT-23 (TO-236-3) (2.9 x 1.3 x 1.0 mm)","in_stock":11770,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/MMBT3904LT1-D.PDF","price":"$0.02 @ 1ku","product_introduction":"The MMBT3904LT1G from ON Semiconductor is the surface-mount equivalent of the industry-standard 2N3904 NPN general-purpose transistor in a SOT-23 package. With a 40 V VCEO rating, 200 mA continuous collector current, and DC current gain of 100 to 300, it is one of the most widely used small-signal transistors for general switching and amplification. The 300 MHz transition frequency supports moderate-speed switching applications. Pb-free and RoHS compliant, it is suitable for automotive, industrial, and consumer electronics.","working_principle":"The MMBT3904 operates as a current-controlled device where a small base current controls a larger collector current. In the active region, IC = hFE x IB, where hFE ranges from 100 to 300. For switching applications, the transistor is driven between cutoff (no base drive, IC = 0) and saturation (sufficient base drive to fully turn on, VCE(sat) typically 0.2 V at 50 mA). The 300 MHz transition frequency indicates the frequency at which the common-emitter current gain drops to unity, defining the useful bandwidth for amplifier applications.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>B<\/td>Base<\/td>Base control input<\/td><\/tr>
      2<\/td>E<\/td>Emitter<\/td>Emitter terminal<\/td><\/tr>
      3<\/td>C<\/td>Collector<\/td>Collector terminal<\/td><\/tr><\/table>","application_scenarios":"
      • General-purpose digital logic level shifting and interfacing<\/li>
      • Small-signal audio and sensor amplification<\/li>
      • LED and relay driver switching circuits<\/li>
      • Power supply enable and disable control<\/li>
      • Sensor signal conditioning and buffer circuits<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Diodes Inc<\/td>MMBT3904-7-F<\/td>SOT-23<\/td>Direct equivalent<\/td><\/tr>
        Nexperia<\/td>MMBT3904,215<\/td>SOT-23<\/td>Direct equivalent<\/td><\/tr>
        Infineon<\/td>MMBT3904H6327<\/td>SOT-23<\/td>Direct equivalent<\/td><\/tr>
        ROHM<\/td>MMBT3904LT1G<\/td>SOT-23<\/td>Direct equivalent<\/td><\/tr>
        ONsemi<\/td>MMBT3906LT1G<\/td>SOT-23<\/td>PNP complement (3906)<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10800","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=10800"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10800\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10800"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10800"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}