{"id":7291,"date":"2026-06-24T03:30:33","date_gmt":"2026-06-24T03:30:33","guid":{"rendered":"https:\/\/materialparts.com\/mmbt2222a\/"},"modified":"2026-06-24T03:30:33","modified_gmt":"2026-06-24T03:30:33","slug":"mmbt2222a","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/mmbt2222a\/","title":{"rendered":"MMBT2222A"},"content":{"rendered":"

Productos<\/h2>\n

The MMBT2222A from onsemi is a general-purpose NPN bipolar junction transistor in a SOT-23-3 surface-mount package. Rated at 40V VCEO and 600mA continuous collector current with 300MHz transition frequency, it is suitable for medium-power amplification and switching applications.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Polarity<\/td>\nNPN<\/td>\n<\/tr>\n
VCEO<\/td>\n40 V<\/td>\n<\/tr>\n
VCBO<\/td>\n75 V<\/td>\n<\/tr>\n
VEBO<\/td>\n6.0 V<\/td>\n<\/tr>\n
IC (continuous)<\/td>\n600 mA<\/td>\n<\/tr>\n
VCE(sat) max<\/td>\n0.3 V @ IC=150mA, IB=15mA<\/td>\n<\/tr>\n
hFE (at 150mA)<\/td>\n100-300<\/td>\n<\/tr>\n
fT<\/td>\n300 MHz<\/td>\n<\/tr>\n
Power Dissipation<\/td>\n350 mW<\/td>\n<\/tr>\n
Paquete<\/td>\nSOT-23-3<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-55\u00b0C to +150\u00b0C<\/td>\n<\/tr>\n
Status<\/td>\nObsolete (use MMBT2222ALT1G)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 40V NPN general-purpose amplifier and switch in SOT-23 package<\/li>\n
  • 300MHz current gain-bandwidth product for high-frequency switching<\/li>\n
  • hFE 100-300 at 150mA for reliable drive capability<\/li>\n
  • Low saturation voltage of 0.3V at 150mA collector current<\/li>\n
  • Process 19 technology with proven reliability<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Medium-power switching and general-purpose amplification<\/li>\n
    • Driver circuits for relays, LEDs, and small loads<\/li>\n
    • General-purpose discrete logic level translation and buffering<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MMBT2222A from onsemi is a general-purpose NPN bipolar junction transistor in a SOT-23-3 surface-mount package. Rated at 40V VCEO and 600mA continuous collector current with 300MHz transition frequency, it is suitable for medium-power amplification and switching applications. Key Specifications Polarity NPN VCEO 40 V VCBO 75 V VEBO 6.0 V IC (continuous) […]<\/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],"tags":[],"chip_brand":[144],"class_list":["post-7291","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-on"],"acf":{"brief_explanation":"NPN 40V 600mA gen-purpose transistor, 300MHz fT, SOT-23-3, hFE 100-300","date_code":"","package_case":"SOT-23-3 (2.92 x 1.30 x 0.93 mm)","in_stock":12400,"datasheet":"https:\/\/www.onsemi.com\/pdf\/datasheet\/pzt2222a-d.pdf","price":"$0.01 @ 3ku","product_introduction":"The MMBT2222A from onsemi (formerly Fairchild) is an NPN general-purpose bipolar junction transistor designed for medium-power amplification and switching requiring collector currents up to 500mA. Sourced from Process 19, the device features a VCEO of 40V, transition frequency of 300MHz, and DC current gain of 100-300 at 150mA. The SOT-23-3 surface-mount package enables compact PCB designs. The device is marked 1P on the package top. Note: The MMBT2222A is listed as obsolete; the recommended replacement is MMBT2222ALT1G or MMBT2222ALT3G with AEC-Q101 qualification.","working_principle":"The MMBT2222A is a standard NPN bipolar junction transistor (BJT). (1) Forward Active: When the base-emitter junction is forward-biased (VBE > 0.6V) and the base-collector junction is reverse-biased, electrons are injected from the emitter into the base region. Most electrons diffuse across the thin base and are collected by the collector, producing a collector current IC that is a multiple (hFE) of the base current IB. (2) Saturation: When both junctions are forward-biased, VCE drops to the saturation voltage VCE(sat), typically 0.3V at IC=150mA. The transistor acts as a closed switch. (3) Cutoff: When IB=0, only a small leakage current ICEO flows, and the transistor acts as an open switch. (4) High-Frequency: The 300MHz fT indicates the frequency at which the common-emitter current gain drops to unity, determining the useful bandwidth for amplifier applications.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>Base<\/td>Base (control input)<\/td><\/tr>
      2<\/td>Emitter<\/td>Emitter<\/td><\/tr>
      3<\/td>Collector<\/td>Collector<\/td><\/tr><\/table>","application_scenarios":"
      • Medium-power switching for relays, solenoids, and LED strings at 40V<\/li>
      • General-purpose signal amplification in audio and control circuits<\/li>
      • Logic-level buffering and driver circuits in SOT-23 footprint<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        onsemi<\/td>MMBT2222ALT1G<\/td>SOT-23-3<\/td>AEC-Q101, recommended replacement<\/td><\/tr>
        Diodes Inc<\/td>MMBT2222A-7-F<\/td>SOT-23-3<\/td>AEC-Q101, active<\/td><\/tr>
        Nexperia<\/td>MMBT2222A,215<\/td>SOT-23-3<\/td>AEC-Q101, active<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7291","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=7291"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7291\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=7291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=7291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=7291"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=7291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}