PNP switching transistor in SC-70 for general-purpose loads
The Infineon BC 807-16W H6327 is a PNP bipolar junction transistor in the compact SC-70 (SOT-323) surface-mount package, designed for general-purpose switching and amplification in low-to-medium current circuits. Typical applications include load switching, signal amplification, and driver stages in consumer, industrial, and telecom equipment where board space is tight.
Infineon no longer manufactures this specific variant, so new production is unavailable through the factory channel.
Key ratings for load and voltage fit
The 45 V collector-emitter breakdown voltage sets the maximum rail the transistor can switch — suitable for 24 V and 36 V industrial supplies with margin. The 500 mA continuous collector current rating covers moderate loads like relays, solenoids, and indicator LEDs. Saturation voltage is specified at 700 mV maximum with 50 mA base drive into 500 mA collector current, which matters for estimating on-state power dissipation in switching applications.
SC-70 footprint — layout and replacement
The SC-70 (SOT-323) package is a three-lead surface-mount footprint common to small-signal transistors. When sourcing a replacement for a board originally built with this part, the SC-70 land pattern is the critical mechanical constraint — any alternate must match this package outline.