Diotec Semiconductor Single Bipolar Transistors MMBTA42-AQ

The MMBTA42-AQ is a surface-mount NPN bipolar transistor in a SOT-23 package, designed for high-voltage switching and amplification applications. It has a collector-emitter voltage rating of 300 V, a continuous collector current of 500 mA, and a maximum power dissipation of 250 mW when mounted on a PCB with 3 mm² copper pad per terminal. The junction temperature range is from -55°C to +150°C. The device is AEC-Q101 qualified, compliant with RoHS and REACH, and features a typical DC current gain (hFE) of 80 to 200 at 10 mA collector current. The thermal resistance from junction to ambient is 420 K/W. The transistor is supplied taped and reeled in 3000-unit packages.