Motorola 2N3439 high-voltage NPN silicon epitaxial planar transistor (silver lead)

The 2N3439 is a high-voltage NPN silicon epitaxial planar transistor designed for demanding industrial and consumer applications. With a maximum collector-emitter voltage of 350V and collector current up to 1A, it excels as a driver in high-voltage inverters, switching circuits, and series regulators. Housed in a robust JEDEC TO-39 metal case, it supports power dissipation up to 10W at 25°C, ensuring reliable performance in thermally controlled environments. This transistor offers a precise balance of voltage handling and power capacity for expert-level circuit design.