The Infineon BCR 569 E6327 is a PNP pre-biased transistor — a digital transistor with a built-in 4.7 kOhm base resistor (R1), designed for simple switched-load applications where a microcontroller GPIO directly drives the base. It handles up to 500 mA collector current and a 50 V collector-emitter breakdown, so it suits medium-power loads like relays, solenoids, small DC motors, and indicator LEDs in industrial controls, automotive body modules, and white goods. The 150 MHz transition frequency is adequate for PWM switching up to tens of kilohertz.
The BCR 569 E6327 carries an Obsolete product status. For new designs, select a current PNP pre-biased transistor in the same SOT-23 footprint.
The 500 mA collector current rating sets the maximum continuous load this transistor can switch — enough for a small relay or a string of LEDs, but not for a motor drive or power supply. The 50 V Vce breakdown gives headroom on a 12 V or 24 V supply rail. The 330 mW power dissipation limit in the PG-SOT23 package means derating is needed at elevated ambient temperatures; at 85 °C ambient the allowable dissipation drops to roughly 200 mW.
