{"product_id":"2n3904-npn-bjt-transistor-to92-package","title":"2N3904 40V 200mA NPN General Purpose BJT Transistor - TO-92 Package 10\/25\/50\/100 Pieces","description":"\u003cp class=\"overflow-wrap-anywhere mb-4 break-words text-base font-normal leading-7 last:mb-0 [li_\u0026amp;]:mb-0\"\u003eThe 2N3904 is a versatile 40V, 0.2A (200mA) NPN bipolar junction transistor (BJT) designed for general-purpose switching and amplification applications. This industry-standard transistor has been a staple in electronics for decades, trusted by hobbyists, students, and professional engineers alike.\u003c\/p\u003e\n\u003ch3 class=\"mb-1 mt-4 break-words text-lg font-semibold\"\u003eKey Features\u003c\/h3\u003e\n\u003cul class=\"ml-4 list-outside list-disc\"\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eHigh Current Gain\u003c\/span\u003e: Typical hFE of 100-300, ensuring efficient amplification\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eFast Switching Speed\u003c\/span\u003e: Ideal for digital circuits and signal processing\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eWide Operating Range\u003c\/span\u003e: Collector-emitter voltage up to 40V\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eMaximum Collector Current\u003c\/span\u003e: 200mA continuous\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eLow Saturation Voltage\u003c\/span\u003e: Excellent for switching applications\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eTO-92 Package\u003c\/span\u003e: Easy to use in breadboards and PCB designs\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eTemperature Range\u003c\/span\u003e: -55°C to +150°C junction temperature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"mb-1 mt-4 break-words text-lg font-semibold\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul class=\"ml-4 list-outside list-disc\"\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eTransistor Type\u003c\/span\u003e: NPN Bipolar Junction Transistor\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003ePackage\u003c\/span\u003e: TO-92 (3-pin through-hole)\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eCollector-Emitter Voltage (VCEO)\u003c\/span\u003e: 40V\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eCollector-Base Voltage (VCBO)\u003c\/span\u003e: 60V\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eEmitter-Base Voltage (VEBO)\u003c\/span\u003e: 6V\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eCollector Current (IC)\u003c\/span\u003e: 200mA max continuous\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003ePower Dissipation\u003c\/span\u003e: 625mW at 25°C\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eDC Current Gain (hFE)\u003c\/span\u003e: 100-300 (typical at IC = 10mA)\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eTransition Frequency\u003c\/span\u003e: 300 MHz (typical)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"mb-1 mt-4 break-words text-lg font-semibold\"\u003eCommon Applications\u003c\/h3\u003e\n\u003cul class=\"ml-4 list-outside list-disc\"\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eAmplifier Circuits\u003c\/span\u003e: Audio preamplifiers, signal amplification\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eSwitching Circuits\u003c\/span\u003e: LED drivers, relay drivers, logic level conversion\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eOscillators\u003c\/span\u003e: RC and LC oscillator designs\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eSensor Interfaces\u003c\/span\u003e: Temperature sensors, light sensors\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eArduino \u0026amp; Raspberry Pi Projects\u003c\/span\u003e: GPIO expansion, motor control\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eEducational Projects\u003c\/span\u003e: Learning electronics fundamentals\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003ePrototyping\u003c\/span\u003e: General-purpose development and testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"mb-1 mt-4 break-words text-lg font-semibold\"\u003eWhat's Included\u003c\/h3\u003e\n\u003cul class=\"ml-4 list-outside list-disc\"\u003e\n\u003cli class=\"py-0.5\"\u003e10x, 25X, 50X or 100X 2N3904 NPN Transistors in TO-92 package \u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"mb-1 mt-4 break-words text-lg font-semibold\"\u003ePin Configuration (TO-92)\u003c\/h3\u003e\n\u003cp class=\"overflow-wrap-anywhere mb-4 break-words text-base font-normal leading-7 last:mb-0 [li_\u0026amp;]:mb-0\"\u003eLooking at the flat face with leads pointing down:\u003c\/p\u003e\n\u003col class=\"ml-8 list-outside list-decimal\"\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eEmitter\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e(E) - Left pin\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eBase\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e(B) - Center pin\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e\n\u003cspan class=\"font-semibold\"\u003eCollector\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e(C) - Right pin\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1641\/0911\/files\/2N3904-Pinout-2_240x240.jpg?v=1769657413\"\u003e\u003c\/div\u003e\n\u003ch3 class=\"mb-1 mt-4 break-words text-lg font-semibold\"\u003eWhy Choose the 2N3904?\u003c\/h3\u003e\n\u003cp class=\"overflow-wrap-anywhere mb-4 break-words text-base font-normal leading-7 last:mb-0 [li_\u0026amp;]:mb-0\"\u003eThe 2N3904 is one of the most popular and widely available transistors in the world. Its reliability, low cost, and versatile performance make it perfect for:\u003c\/p\u003e\n\u003cul class=\"ml-4 list-outside list-disc\"\u003e\n\u003cli class=\"py-0.5\"\u003eStudents learning electronics\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003eMakers and hobbyists building projects\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003eEngineers prototyping new designs\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003eRepair and replacement applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"mb-1 mt-4 break-words text-lg font-semibold\"\u003eCompatibility\u003c\/h3\u003e\n\u003cp class=\"overflow-wrap-anywhere mb-4 break-words text-base font-normal leading-7 last:mb-0 [li_\u0026amp;]:mb-0\"\u003eWorks seamlessly with:\u003c\/p\u003e\n\u003cul class=\"ml-4 list-outside list-disc\"\u003e\n\u003cli class=\"py-0.5\"\u003eArduino, Raspberry Pi, and other microcontrollers\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003eStandard breadboards and perfboards\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003ePCB designs with through-hole components\u003c\/li\u003e\n\u003cli class=\"py-0.5\"\u003e5V and 3.3V logic systems (with appropriate resistors)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon Equivalents\u003c\/h3\u003e\n\u003cp\u003eThe 2N3904 is a direct or near-direct replacement for the BC547, BC548, 2N2222A, and 2N4401. \u003c\/p\u003e\n\u003ch3 class=\"mb-1 mt-4 break-words text-lg font-semibold\"\u003eQuality Assurance\u003c\/h3\u003e\n\u003cp class=\"overflow-wrap-anywhere mb-4 break-words text-base font-normal leading-7 last:mb-0 [li_\u0026amp;]:mb-0\"\u003eAll transistors are sourced from reputable manufacturers and tested to meet or exceed original specifications. RoHS compliant and lead-free.\u003c\/p\u003e","brand":"Envistia Mall","offers":[{"title":"10 Pieces","offer_id":47393294450937,"sku":"EM-ECOMP-0152-10X","price":2.39,"currency_code":"USD","in_stock":true},{"title":"25 Pieces","offer_id":47393294483705,"sku":"EM-ECOMP-0152-25X","price":3.59,"currency_code":"USD","in_stock":true},{"title":"50 Pieces","offer_id":47393294516473,"sku":"EM-ECOMP-0152-50X","price":6.49,"currency_code":"USD","in_stock":true},{"title":"100 Pieces","offer_id":47393294549241,"sku":"EM-ECOMP-0152-100X","price":11.89,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1641\/0911\/files\/2n3904-40v-200ma-npn-general-purpose-bjt-transistor-to-92-package-102550100-pieces-7401788.jpg?v=1770292149","url":"https:\/\/envistiamall.com\/products\/2n3904-npn-bjt-transistor-to92-package","provider":"Envistia Mall","version":"1.0","type":"link"}