{"id":6629,"date":"2026-06-18T15:45:49","date_gmt":"2026-06-18T15:45:49","guid":{"rendered":"https:\/\/materialparts.com\/s8050-2\/"},"modified":"2026-06-18T15:45:49","modified_gmt":"2026-06-18T15:45:49","slug":"s8050-2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/s8050-2\/","title":{"rendered":"S8050"},"content":{"rendered":"

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

The S8050 is an NPN general-purpose bipolar junction transistor in a TO-92 through-hole package. With 25V VCEO, 1.5A IC, and high current gain (hFE 85-300), it is the complementary NPN to the S8550 PNP. Widely used for relay driving, motor control, LED driving, and push-pull audio amplifier output stages in consumer electronics and hobby projects.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\nNPN Bipolar Junction Transistor<\/td>\n<\/tr>\n
VCEO (Collector-Emitter)<\/td>\n25V<\/td>\n<\/tr>\n
VCBO (Collector-Base)<\/td>\n40V<\/td>\n<\/tr>\n
VEBO (Emitter-Base)<\/td>\n6V<\/td>\n<\/tr>\n
IC (Continuous Collector Current)<\/td>\n1.5A<\/td>\n<\/tr>\n
hFE\uff08\u76f4\u6d41\u7535\u6d41\u589e\u76ca\uff09<\/td>\n85-300 (classified by grade C\/D\/E)<\/td>\n<\/tr>\n
VCE(sat)<\/td>\n0.5V max @ 500 mA, 50 mA<\/td>\n<\/tr>\n
fT (Transition Frequency)<\/td>\n200 MHz<\/td>\n<\/tr>\n
\u529f\u7387\u8017\u6563<\/td>\n1W (at TC=25\u00b0C)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55\u00b0C to +150\u00b0C (junction)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nTO-92 (through-hole)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • High current: 1.5A continuous collector current<\/li>\n
  • Three gain grades: C (85-160), D (120-200), E (160-300)<\/li>\n
  • Complementary PNP: S8550<\/li>\n
  • Low saturation voltage for efficient switching<\/li>\n
  • 200 MHz transition frequency for moderate-speed applications<\/li>\n
  • TO-92 package, extremely low cost, universally available<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • NPN high-side switch for relay and solenoid driving<\/li>\n
    • DC motor drive and speed control<\/li>\n
    • LED and indicator driver<\/li>\n
    • Push-pull audio amplifier with S8550<\/li>\n
    • General-purpose switching and amplification<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The S8050 is an NPN general-purpose bipolar junction transistor in a TO-92 through-hole package. With 25V VCEO, 1.5A IC, and high current gain (hFE 85-300), it is the complementary NPN to the S8550 PNP. Widely used for relay driving, motor control, LED driving, and push-pull audio amplifier output stages in consumer electronics and […]<\/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":[13,15],"tags":[],"chip_brand":[299],"class_list":["post-6629","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-logic-chips","chip_brand-jcet"],"acf":{"brief_explanation":"NPN transistor, 25V, 1.5A, hFE 85-300, TO-92","date_code":"","package_case":"TO-92 (5.2\u00d75.2 mm body, 2.54mm pitch, through-hole)","in_stock":22000,"datasheet":"https:\/\/www.makerstore.com.au\/wp-content\/uploads\/2019\/03\/S8050.pdf","price":"$0.01 @ 1ku","product_introduction":"The S8050 is an NPN general-purpose bipolar junction transistor rated at 25V\/1.5A in a TO-92 through-hole package. With hFE from 85 to 300 (three gain grades) and complementary PNP S8550, it is one of the most widely used low-cost transistors for relay driving, motor control, LED switching, and push-pull amplifier output stages in consumer electronics and educational projects.","working_principle":"The S8050 is an NPN silicon epitaxial planar transistor. Current flows from collector to emitter when the base-emitter junction is forward biased (VBE > 0.65V). The base current is amplified by hFE (85-300) to produce a larger collector current. In switching applications, driving the base with sufficient current saturates the transistor (VCE < 0.5V), minimizing power dissipation. The 1.5A rating and low saturation voltage make it suitable for driving moderate loads like relays, motors, and LEDs directly from MCU GPIO with a base resistor. The complementary PNP S8550 enables push-pull amplifier and H-bridge motor drive configurations.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>Emitter<\/td>Power<\/td>Transistor emitter (connects to ground in NPN)<\/td><\/tr>\n
      2<\/td>Base<\/td>Input<\/td>Transistor base (control terminal)<\/td><\/tr>\n
      3<\/td>Collector<\/td>Output<\/td>Transistor collector (connects to load)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • NPN switch for relay, solenoid, and buzzer driving from MCU GPIO<\/li>\n
      • DC motor drive and PWM speed control<\/li>\n
      • LED and indicator lamp driver circuits<\/li>\n
      • Push-pull audio amplifier paired with S8550 PNP<\/li>\n
      • General-purpose switching and low-power amplification<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        Various<\/td>S8050<\/td>TO-92<\/td>Multiple manufacturers produce equivalents<\/td><\/tr>\n
        Various<\/td>S8550<\/td>TO-92<\/td>Complementary PNP type<\/td><\/tr>\n
        ON Semiconductor<\/td>2N3904<\/td>TO-92<\/td>Lower current (200mA), higher voltage (40V)<\/td><\/tr>\n
        ON Semiconductor<\/td>2N2222A<\/td>TO-92<\/td>40V, 600mA, higher voltage NPN<\/td><\/tr>\n
        STMicroelectronics<\/td>BD135<\/td>SOT-32<\/td>1.5A, 45V, higher power NPN<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6629","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=6629"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6629\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6629"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6629"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6629"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6629"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}