{"id":5149,"date":"2026-06-09T09:04:24","date_gmt":"2026-06-09T09:04:24","guid":{"rendered":"https:\/\/materialparts.com\/fjv1845fmtf\/"},"modified":"2026-06-09T09:04:24","modified_gmt":"2026-06-09T09:04:24","slug":"fjv1845fmtf","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/fjv1845fmtf\/","title":{"rendered":"FJV1845FMTF"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The FJV1845FMTF from onsemi is an NPN epitaxial silicon transistor in SOT-23 package, designed for audio frequency low-noise amplifier applications with 120V VCEO and high hFE.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629<\/td>\n\u0623\u0648\u0646\u0633\u0645\u064a<\/td>\n<\/tr>\n
\u0627\u0644\u0646\u0648\u0639<\/td>\nNPN Bipolar Junction Transistor<\/td>\n<\/tr>\n
VCEO<\/td>\n120V<\/td>\n<\/tr>\n
VCBO<\/td>\n120V<\/td>\n<\/tr>\n
VEBO<\/td>\n5V<\/td>\n<\/tr>\n
\u0622\u064a \u0633\u064a<\/td>\n50 mA max<\/td>\n<\/tr>\n
PC<\/td>\n300 mW<\/td>\n<\/tr>\n
hFE (min)<\/td>\n300 @ IC=1mA, VCE=6V<\/td>\n<\/tr>\n
hFE range<\/td>\n200-1200<\/td>\n<\/tr>\n
VCE(sat)<\/td>\n0.3V max @ IC=10mA<\/td>\n<\/tr>\n
fT<\/td>\n110 MHz typical<\/td>\n<\/tr>\n
ICBO<\/td>\n50 nA max<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-23 (TO-236-3)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-55 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +150 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • High voltage: 120V VCEO<\/li>\n
  • High hFE: 300 min @ 1mA<\/li>\n
  • Low noise audio amplifier<\/li>\n
  • Complement to FJV992 (PNP)<\/li>\n
  • Low VCE(sat): 0.07V typical<\/li>\n
  • Pb-free, halogen-free, RoHS compliant<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Audio frequency low-noise amplifiers<\/li>\n
    • Complementary push-pull amplifier stages<\/li>\n
    • General-purpose low-signal amplification<\/li>\n
    • High-voltage small-signal switching<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The FJV1845FMTF from onsemi is an NPN epitaxial silicon transistor in SOT-23 package, designed for audio frequency low-noise amplifier applications with 120V VCEO and high hFE. Key Specifications Manufacturer onsemi Type NPN Bipolar Junction Transistor VCEO 120V VCBO 120V VEBO 5V IC 50 mA max PC 300 mW hFE (min) 300 @ IC=1mA, […]<\/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-5149","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 audio transistor, 120V, 50mA, hFE 300-1200, 110MHz, SOT-23","date_code":"","package_case":"SOT-23 (2.9 x 1.3 x 1.04 mm)","in_stock":8242,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/FJV1845-D.PDF","price":"$0.14 @ 3ku","product_introduction":"The FJV1845FMTF from onsemi is an NPN epitaxial silicon transistor optimized for audio frequency low-noise amplifier applications. With 120V VCEO, 50mA IC, and high hFE (300-1200), it is the complementary PNP pair to the FJV992. The SOT-23 package and 110MHz fT make it ideal for compact, high-fidelity audio circuits requiring low noise and high gain.","working_principle":"As an NPN BJT, the FJV1845 conducts collector current when the base-emitter junction is forward biased. The epitaxial construction provides high breakdown voltage with low collector saturation voltage. High hFE ensures sufficient gain with minimal base drive current. The low-noise characteristics make it suitable for audio preamplifier input stages.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>Base<\/td>Base input<\/td><\/tr>
      2<\/td>Emitter<\/td>Emitter<\/td><\/tr>
      3<\/td>Collector<\/td>Collector<\/td><\/tr><\/table>","application_scenarios":"
      • Audio preamplifier input stages<\/li>
      • Complementary push-pull output drivers<\/li>
      • Low-noise microphone amplifiers<\/li>
      • High-voltage small-signal switching<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Notes<\/th><\/tr>
        onsemi<\/td>FJV992FMTF<\/td>PNP complement<\/td><\/tr>
        onsemi<\/td>2N3904<\/td>Lower voltage alternative<\/td><\/tr>
        Nexperia<\/td>BC847C<\/td>General-purpose NPN<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5149","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=5149"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5149\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=5149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=5149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=5149"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=5149"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}