BC327

The BC327 is a PNP silicon bipolar junction transistor designed for general purpose amplification and switching applications. Manufactured by ON Semiconductor, this transistor offers a collector-emitter breakdown voltage of -45 V and a continuous collector current rating of -800 mA. It is housed in a TO-92 through-hole package, making it suitable for a wide range of electronic circuits.

Key electrical characteristics include a DC current gain (hFE) ranging from 100 to 630 at -100 mA collector current, ensuring consistent performance in amplifier stages. The transistor features a transition frequency (fT) of 260 MHz, enabling use in low to medium frequency applications. The saturation voltage (VCE(sat)) is typically -0.7 V at -500 mA, contributing to efficient switching operation.

The BC327 is capable of dissipating up to 625 mW at ambient temperature and 1.5 W at case temperature, with a junction-to-ambient thermal resistance of 200 °C/W. It operates over a junction temperature range of -55°C to 150°C, providing reliability in demanding environments. The device is also available in hFE-sorted variants (BC327-16, BC327-25, BC327-40) for tighter gain requirements.

This transistor is commonly used in audio amplifier driver stages, signal processing circuits, and output stages of low-power systems. Its Pb-free packaging aligns with environmental compliance standards, though RoHS status should be verified with the manufacturer for specific requirements.