onsemi Single Bipolar Transistors BD442

The BD442 is a silicon PNP bipolar transistor designed for amplifier and switching applications. It is packaged in a TO-225 case with dimensions of 10.60 to 11.10 mm in length, 7.40 to 7.80 mm in width, and 14.50 to 16.63 mm in height. It has a collector-emitter voltage rating of 80 V, a collector current rating of 4.0 A, and a total device dissipation of 36 W at 25°C, with a derating of 288 W/°C above 25°C. The thermal resistance from junction to case is 3.5 °C/W. The device operates over a temperature range of -55°C to +150°C. The base-emitter on voltage is up to 1.5 V at 2.0 A collector current, and the collector saturation voltage is up to 0.8 V. The current-gain-bandwidth product is 3.0 MHz. The product is RoHS compliant and Pb-free. Complementary NPN types are BD441. The BD442 is not recommended for new designs.