multicomp PRO Bipolar (Bjt) Single Transistor, Darlington, Npn, 60 V, 40 W, 4 A, 750 Rohs Compliant Multicomp Pro BD677

The BD677 is an NPN power Darlington transistor in a TO-126 package, designed for high-current switching applications. It has a collector-emitter voltage rating of 60 V, a continuous collector current of 4 A, and a total power dissipation of 40 W at 25°C with a derating of 0.32 W/°C. The junction temperature range is -55°C to +150°C, with a thermal resistance from junction to case of 3.13°C/W and junction to ambient of 100°C/W. The transistor features a minimum DC current gain of 750 at 1.5 A collector current and has a collector-emitter saturation voltage of 2.5 V under test conditions. The package dimensions are between 7.4-7.8 mm in length, 10.5-10.8 mm in width, and 2.4-2.7 mm in thickness. It is RoHS compliant.