multicomp PRO Bipolar (Bjt) Single Transistor, Darlington, Pnp, 60 V, 40 W, 4 A, 750 Rohs Compliant Multicomp Pro BD678

The BD678 is a PNP power Darlington transistor in a TO-126 package, measuring 7.4-7.8 mm in length, 10.5-10.8 mm in width, and 2.4-2.7 mm in thickness. It has a collector-emitter voltage rating of 60 V, a continuous collector current of 4 A, and a power dissipation of 40 W at 25°C, derating at 0.32 W/°C. Thermal resistance is 3.13 °C/W from junction to case and 100 °C/W from junction to ambient. Operating and storage junction temperatures range from -55 to +150 °C. Collector-emitter saturation voltage is 2.5 V at 1.5 A and 2.8 V at 2 A, with a base-emitter on voltage of 2.5 V. Minimum DC current gain is 750 at 1.5 A and 2 A collector current.