{"product_id":"s9018-transistor-j8-npn-18v-50ma-200mw-to-92-general-purpose-amplifier-switch","title":"S9018 Transistor J8 NPN 18V 50mA 200mW TO-92 – General Purpose Amplifier \u0026 Switch","description":"\u003ch2\u003eS9018 Transistor J8 NPN 18V 50mA 200mW TO-92\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eS9018\u003c\/strong\u003e is a general-purpose NPN bipolar junction transistor designed for low-power amplification and switching circuits. With a maximum collector current of 50mA and power dissipation up to 200mW, it is ideal for audio frequency signal amplification, RF signal processing, oscillators, timers, and small load control in DIY electronics and consumer projects. Packaged in a compact \u003cstrong\u003eTO-92\u003c\/strong\u003e through-hole case, it fits standard breadboards and PCBs.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications \/ Datasheet\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eRating\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransistor Type\u003c\/td\u003e\n\u003ctd\u003eNPN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector-Base Voltage (VCBO)\u003c\/td\u003e\n\u003ctd\u003e30V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector-Emitter Voltage (VCEO)\u003c\/td\u003e\n\u003ctd\u003e18V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmitter-Base Voltage (VEBO)\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector Current (IC)\u003c\/td\u003e\n\u003ctd\u003e50mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation (Ptot)\u003c\/td\u003e\n\u003ctd\u003e200mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Current Gain (hFE)\u003c\/td\u003e\n\u003ctd\u003e100–300 (at IC = 1mA, VCE = 6V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransition Frequency (fT)\u003c\/td\u003e\n\u003ctd\u003e150MHz (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Type\u003c\/td\u003e\n\u003ctd\u003eTO-92\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLead Configuration\u003c\/td\u003e\n\u003ctd\u003eEmitter–Base–Collector (E-B-C from left, flat side facing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Style\u003c\/td\u003e\n\u003ctd\u003eThrough-hole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGeneral-purpose NPN transistor for low-power amplification and switching\u003c\/li\u003e\n\u003cli\u003eCompact TO-92 package, perfect for breadboard and PCB prototyping\u003c\/li\u003e\n\u003cli\u003eModerate DC current gain (hFE) typically 100–300\u003c\/li\u003e\n\u003cli\u003eFast switching speed for signal processing circuits\u003c\/li\u003e\n\u003cli\u003eLow saturation voltage for efficient switching\u003c\/li\u003e\n\u003cli\u003eReliable performance in audio preamplifiers and RF circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSignal amplification in preamplifiers and audio stages\u003c\/li\u003e\n\u003cli\u003eSmall load switching and relay control\u003c\/li\u003e\n\u003cli\u003eOscillators, timers, and low-frequency generators\u003c\/li\u003e\n\u003cli\u003eRF signal processing and high-frequency circuits\u003c\/li\u003e\n\u003cli\u003eDIY electronics, student projects, and hobbyist circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePinout \u0026amp; Wiring\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePin Configuration (flat side facing you, pins down):\u003c\/strong\u003e Emitter (left), Base (center), Collector (right).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBasic wiring:\u003c\/strong\u003e connect the base through a current-limiting resistor, the collector to the load, and the emitter to ground.\u003c\/p\u003e\n\u003ch3\u003eEquivalent \/ Alternative Models\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2N3904 – widely used NPN transistor with similar ratings\u003c\/li\u003e\n\u003cli\u003eBC547 – general-purpose NPN alternative for low-current applications\u003c\/li\u003e\n\u003cli\u003e2SC945 – Japanese equivalent with comparable specs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x S9018 Transistor J8 NPN 18V 50mA 200mW TO-92\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":51571864797462,"sku":null,"price":15.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0744\/0764\/1366\/files\/s9018-transistor-j8-npn-18v-50ma-200mw-to-92.jpg?v=1784275394","url":"https:\/\/digilog.pk\/products\/s9018-transistor-j8-npn-18v-50ma-200mw-to-92-general-purpose-amplifier-switch","provider":"digilog.pk","version":"1.0","type":"link"}