{"product_id":"mj15003-npn-power-transistor-140v-20a-to3","title":"MJ15003 NPN Power Transistor – 140V 20A TO-3","description":"\u003cp\u003eThe MJ15003 is an NPN silicon power transistor in a metal TO-3 (TO-204AA) package. It is designed for compatible high-power audio amplifiers and other linear power applications. Choose a replacement using the complete circuit requirements and the datasheet for the actual manufacturer supplied.\u003c\/p\u003e\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDevice:\u003c\/strong\u003e MJ15003 NPN bipolar power transistor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e TO-3 \/ TO-204AA metal case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector-emitter voltage:\u003c\/strong\u003e 140 V maximum in the onsemi reference datasheet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector current:\u003c\/strong\u003e 20 A continuous maximum rating, subject to safe operating area and thermal limits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower dissipation:\u003c\/strong\u003e 250 W maximum with the case held at 25°C; heatsinking and temperature derating are required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplementary device:\u003c\/strong\u003e MJ15004 PNP in the reference datasheet; not included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e One transistor per unit ordered\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSelection and Installation\u003c\/h2\u003e\u003cp\u003eMaximum voltage, current and dissipation figures are separate limits and must not be assumed simultaneously. Check safe operating area, base drive, gain, circuit stability and cooling before replacement. Verify the pinout using the correct package-view drawing. The metal case is the collector in the reference TO-3 configuration; use appropriate insulating hardware where heatsink isolation is required. Confirm the current batch marking when a particular brand or origin is essential.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs MJ15003 NPN or PNP?\u003c\/h3\u003e\u003cp\u003eMJ15003 is an NPN bipolar transistor.\u003c\/p\u003e\n\u003ch3\u003eWhich package does it use?\u003c\/h3\u003e\u003cp\u003eIt uses the metal TO-3 package, also called TO-204AA.\u003c\/p\u003e\n\u003ch3\u003eCan it operate at 140V and 20A simultaneously?\u003c\/h3\u003e\u003cp\u003eDo not assume that. The safe operating area and thermal design determine the allowed combination.\u003c\/p\u003e\n\u003ch3\u003eDoes the 250W rating require a heatsink?\u003c\/h3\u003e\u003cp\u003eYes. That maximum is specified with the case at 25°C and requires suitable cooling and derating in practice.\u003c\/p\u003e\n\u003ch3\u003eWhat is the complementary PNP transistor?\u003c\/h3\u003e\u003cp\u003eThe reference datasheet pairs MJ15003 with MJ15004.\u003c\/p\u003e\n\u003ch3\u003eCan I substitute it for any TO-3 part?\u003c\/h3\u003e\u003cp\u003eNo. Compare polarity, ratings, gain, pinout, speed, safe operating area and the circuit's requirements.\u003c\/p\u003e\n\u003ch3\u003eWhat is included?\u003c\/h3\u003e\u003cp\u003eOne MJ15003 transistor per unit ordered. Heatsink and mounting hardware are separate unless specified.\u003c\/p\u003e","brand":"Embeded Studio","offers":[{"title":"Default Title","offer_id":62731654660466,"sku":"ES-MJ15003-NPN-TO3","price":400.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/7935\/3202\/files\/MJ15003NPN.webp?v=1793809964","url":"https:\/\/embededstudio.com\/products\/mj15003-npn-power-transistor-140v-20a-to3","provider":"Embeded Studio","version":"1.0","type":"link"}