The JANTX2N2219A is a hermetically sealed NPN silicon transistor designed for switching applications. It features a collector-emitter voltage rating of 50 Vdc and a continuous collector current of 800 mA. This device offers a DC current gain (hFE) between 100 and 300 at a collector current of 150 mA. With a total power dissipation of 3.0 W at a case temperature of 25°C and a wide operating junction temperature range from -55°C to +200°C, it ensures robust performance. Its military-grade qualification makes it suitable for demanding applications in aerospace, defense, and other high-reliability systems.