The 1N748A is a Zener diode from CENTRAL SEMICONDUCTOR, available at Supreme Components International, an authorised distributor. This diode, housed in a DO-35 package, is designed for voltage regulation and protection in a wide range of electronic applications. With a Zener voltage of 3.9V and a power dissipation of 400mW, the 1N748A provides a stable and reliable reference voltage. Its compact size and robust construction make it suitable for both through-hole and breadboard prototyping. This Zener diode is commonly used in power supplies, voltage clamping circuits, and overvoltage protection circuits. Trust Supreme Components International for genuine CENTRAL SEMICONDUCTOR components and expert support.