{"product_id":"l7908-8v-negative-voltage-regulator-ic-to-220","title":"L7908 -8V Negative Voltage Regulator IC | TO-220","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe \u003cstrong\u003eL7908 -8V Negative Voltage Regulator IC\u003c\/strong\u003e is a highly reliable three-terminal power management component designed to provide a fixed negative 8-volt DC output. Housed in a standard TO-220 through-hole package, this regulator is an essential building block for hardware engineers and hobbyists who need to design stable \"split\" or dual-rail power supplies (e.g., +8V, GND, -8V).\u003c\/p\u003e\n\u003cp\u003eAvailable at Tomson Electronics, the L7908 is capable of delivering up to 1.5A of output current when properly mounted to a heatsink. It is engineered with robust built-in safety features, including internal thermal overload protection, short-circuit current limiting, and output transistor safe-area compensation. This makes it nearly indestructible under standard prototyping conditions and highly favored for powering sensitive analog audio circuits and operational amplifiers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePeople also search for:\u003c\/strong\u003e l7908 ic, 7908 negative regulator, -8v voltage regulator, to-220 negative regulator, split power supply ic.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e L7908 (7908 series)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e -8V DC (Fixed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Output Current:\u003c\/strong\u003e 1.5A (with adequate heatsinking)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Input Voltage:\u003c\/strong\u003e -35V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e TO-220 (Through-hole)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin Configuration:\u003c\/strong\u003e Pin 1 (Ground), Pin 2 (Input), Pin 3 (Output)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in Protections:\u003c\/strong\u003e Thermal shutdown, short-circuit current limiting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eDatasheet\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2132\/9029\/files\/7908.pdf?v=1784893619\" target=\"_blank\" rel=\"noopener\"\u003eDownload L7908 Datasheet PDF\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eApplications\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Rail Power Supplies:\u003c\/strong\u003e Paired with an L7808 (positive +8V regulator) to create a symmetrical split power supply from a center-tapped transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudio Amplifiers:\u003c\/strong\u003e Providing clean, stable negative voltage rails required by high-fidelity pre-amps, synthesizers, and operational amplifiers (Op-Amps).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Instrumentation:\u003c\/strong\u003e Regulating power for sensitive analog measurement sensors that require a stable negative reference voltage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsumer Electronics Repair:\u003c\/strong\u003e Serving as a direct replacement part for faulty negative regulators in older audio-visual equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eFrequently Asked Questions (FAQ)\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are the pins on the 7908 the same as the 7808?\u003c\/strong\u003e\u003cbr\u003eA: \u003cstrong\u003eNo!\u003c\/strong\u003e This is a very common mistake. The positive 7808 series uses Pin 1 (Input), Pin 2 (Ground), Pin 3 (Output). The negative 7908 series uses Pin 1 (Ground), Pin 2 (Input), Pin 3 (Output). Wiring a 7908 using the 7808 pinout will destroy the IC immediately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the minimum input voltage required for a stable -8V output?\u003c\/strong\u003e\u003cbr\u003eA: Like most linear regulators, the L7908 has a \"dropout voltage\" of roughly 2V. This means you must feed it an input voltage of at least -10V (ideally -10V to -15V) to ensure a stable -8V output.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to use a heatsink with this IC?\u003c\/strong\u003e\u003cbr\u003eA: It depends on your power dissipation. If you are drawing more than a few hundred milliamps, or if there is a large difference between your input voltage and the -8V output (e.g., dropping -24V down to -8V), the IC will generate significant heat. In these cases, bolting a TO-220 aluminum heatsink to the metal tab is highly recommended.\u003c\/p\u003e\n\u003ch5\u003ePackage Includes\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e1 × L7908 -8V Negative Voltage Regulator IC – TO-220\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMPORTED","offers":[{"title":"Default Title","offer_id":48382880481518,"sku":"INC-01594","price":20.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2132\/9029\/files\/REGICL7908SEC.jpg?v=1784893916","url":"https:\/\/www.tomsonelectronics.com\/products\/l7908-8v-negative-voltage-regulator-ic-to-220","provider":"Tomson Electronics ","version":"1.0","type":"link"}