{"id":5155,"date":"2026-06-09T09:04:35","date_gmt":"2026-06-09T09:04:35","guid":{"rendered":"https:\/\/materialparts.com\/mmun2233lt1g\/"},"modified":"2026-06-09T09:04:35","modified_gmt":"2026-06-09T09:04:35","slug":"mmun2233lt1g","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mmun2233lt1g\/","title":{"rendered":"MMUN2233LT1G"},"content":{"rendered":"

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

The MMUN2233LT1G from onsemi is an NPN digital transistor (BRT) with integrated 4.7k\u03a9 base resistor and 4.7k\u03a9 base-emitter resistor in SOT-23, simplifying circuit design.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u5236\u9020\u5546<\/td>\nonsemi<\/td>\n<\/tr>\n
\u7c7b\u578b<\/td>\nNPN \u6570\u5b57\u6676\u4f53\u7ba1\uff08BRT\uff09<\/td>\n<\/tr>\n
VCEO<\/td>\n50V<\/td>\n<\/tr>\n
\u96c6\u6210\u7535\u8def<\/td>\n100 mA<\/td>\n<\/tr>\n
R1 (Base Resistor)<\/td>\n4.7 k\u03a9<\/td>\n<\/tr>\n
R2 (Base-Emitter Resistor)<\/td>\n4.7 k\u03a9<\/td>\n<\/tr>\n
VCE(sat)<\/td>\n0.3V max @ IC=10mA<\/td>\n<\/tr>\n
hFE<\/td>\n35 typ @ IC=10mA (with R1)<\/td>\n<\/tr>\n
\u529f\u7387\u8017\u6563<\/td>\n200 mW<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-23 (TO-236)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55\u00b0C \u81f3 +150\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Built-in 4.7k\u03a9 base resistor (R1)<\/li>\n
  • Built-in 4.7k\u03a9 base-emitter resistor (R2)<\/li>\n
  • Eliminates external bias resistors<\/li>\n
  • Direct logic-level drive<\/li>\n
  • SOT-23 compact package<\/li>\n
  • Pb-free, RoHS compliant<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Digital logic interface<\/li>\n
    • LED driver<\/li>\n
    • Relay driver<\/li>\n
    • Motor control pre-driver<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MMUN2233LT1G from onsemi is an NPN digital transistor (BRT) with integrated 4.7k\u03a9 base resistor and 4.7k\u03a9 base-emitter resistor in SOT-23, simplifying circuit design. Key Specifications Manufacturer onsemi Type NPN Digital Transistor (BRT) VCEO 50V IC 100 mA R1 (Base Resistor) 4.7 k\u03a9 R2 (Base-Emitter Resistor) 4.7 k\u03a9 VCE(sat) 0.3V max @ IC=10mA […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[57,13],"tags":[],"chip_brand":[144],"class_list":["post-5155","post","type-post","status-publish","format-standard","hentry","category-insulated-gate-bipolar-transistors-igbt","category-integrated-circuits-ics","chip_brand-on"],"acf":{"brief_explanation":"NPN digital transistor, 50V, 100mA, R1=4.7k\u03a9, R2=4.7k\u03a9, SOT-23","date_code":"","package_case":"SOT-23 (2.9 x 1.3 x 1.0 mm)","in_stock":13307,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/MMUN2233LT1-D.PDF","price":"$0.03 @ 1ku","product_introduction":"The MMUN2233LT1G from onsemi is a bias resistor transistor (BRT) containing an NPN transistor with integrated 4.7k\u03a9 base series resistor and 4.7k\u03a9 base-emitter shunt resistor in a single SOT-23 package. This digital transistor eliminates external biasing components, enabling direct interface from MCU GPIO to loads such as LEDs, relays, and small motors. The 50V VCEO and 100mA IC ratings cover a wide range of low-power switching applications.","working_principle":"The BRT integrates two resistors with the NPN transistor: R1 (4.7k\u03a9) limits base current from a logic-level input, and R2 (4.7k\u03a9) provides a base-emitter discharge path for faster turn-off and noise immunity. The effective input voltage threshold is set by R1\/R2 divider. A logic HIGH on the input pin forward-biases the base through R1, turning on the transistor. Logic LOW allows R2 to discharge the base-emitter junction, turning off the transistor.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>B<\/td>Base input (through R1)<\/td><\/tr>
      2<\/td>E<\/td>Emitter<\/td><\/tr>
      3<\/td>C<\/td>Collector<\/td><\/tr><\/table>","application_scenarios":"
      • MCU GPIO to LED interface<\/li>
      • Relay and solenoid pre-driver<\/li>
      • Logic-level signal inversion<\/li>
      • I\/O line buffering<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Notes<\/th><\/tr>
        onsemi<\/td>MMUN2211LT1G<\/td>10k\u03a9\/10k\u03a9 resistors<\/td><\/tr>
        Nexperia<\/td>PBSS4140T,215<\/td>Digital transistor<\/td><\/tr>
        Rohm<\/td>DTA114ECA<\/td>PNP equivalent<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5155","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=5155"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5155\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5155"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5155"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}