Pre-biased NPN — what the integrated resistors buy you
The Infineon BCR142WH6327 is an NPN pre-biased transistor (also called a bias-resistor transistor, BRT) in a SC-70 / SOT-323 package. It integrates a 22 kΩ base resistor (R1) and a 47 kΩ base-emitter resistor (R2) directly on-chip, eliminating two external passives from the BOM. This makes it a clean fit for digital switching interfaces where you need to drive a load from a microcontroller output or logic gate without adding a resistor network.
50 V, 100 mA — where the rating matters
Collector-emitter breakdown is rated at 50 V, with a continuous collector current of 100 mA and a power dissipation ceiling of 250 mW.
Saturation and gain — what to expect at 5 V drive
With a base drive of 500 µA and collector current of 10 mA, Vce(sat) is typically 300 mV — low enough to keep dissipation minimal in a saturated switch. Minimum DC current gain is 70 at 5 mA, 5 V, so a 5 V logic output with a series resistor can reliably saturate the transistor for loads up to about 50 mA. The 100 nA collector cutoff current ensures negligible leakage at high temperature.
Package and storage
Housed in a PG-SOT323-3-1 (SC-70) surface-mount package, the BCR142WH6327 is a small three-pin device suited for dense PCB layouts. The supplier device package is PG-SOT323-3-1. The listing shows the shipping medium as Bulk, so expect loose parts in a bag or tube rather than a reel — verify the packaging format with your order if you need Tape & Reel for automated placement.