BCW71

The BCW71 is an NPN general purpose amplifier transistor manufactured by ON Semiconductor (onsemi). It is designed for general purpose amplifier applications at collector currents up to 300 mA, with a maximum continuous collector current rating of 500 mA. The device offers a collector-emitter breakdown voltage (VCEO) of 45 V minimum and a collector-base breakdown voltage (VCBO) of 50 V minimum.

Key electrical characteristics include a DC current gain (hFE) range of 110 to 220 at Ic = 2 mA and Vce = 5 V, a typical gain bandwidth product (fT) of 330 MHz, and a low collector-emitter saturation voltage of 0.25 V maximum at Ib = 500 µA and Ic = 10 mA. The transistor also features a maximum power dissipation of 350 mW at 25°C ambient temperature and an operating junction temperature range of -55°C to +150°C.

The BCW71 is housed in a SOT-23-3 surface mount package with gull wing leads. It is supplied in tape and reel packaging with a standard quantity of 3000 pieces per reel. The device is lead-free (Pb-Free) and halogen-free, and is marked with code K1M.

This transistor is suitable for low-power amplification, switching, and driver stages in audio, signal processing, and general electronic circuits. Its compact SOT-23 package makes it ideal for space-constrained designs.