The MPSA13 is a transistor-NPN silicon Darlington manufactured by NTE. It has a low noise gain of 21. This device is designed to provide up to 800 volts of voltage breakdown, making it ideal for use in high voltage applications. It has a maximum power dissipation at 25 degrees Celsius of one watt and a 1.5 ampere continuous collector current rating. The features of this part also include a 30-volt forward rated collector-emitter voltage, 50 microampere of base-emitter leakage, and a 400 microampere of collector-base leakage. It is suitable for applications including power switching, amplifier stages, and AF amplifiers.