Last Buy notice — sourcing window closing
The BCR512E6327HTSA1 carries a Last Buy lifecycle status from Infineon, meaning the manufacturer has scheduled its end of production. Buyers should secure final-order quantities and evaluate a replacement before the order cutoff passes.
NPN pre-biased transistor — 50 V, 500 mA, built-in resistors
The BCR512E6327HTSA1 is an NPN pre-biased transistor in a PG-SOT23 surface-mount package. It integrates two 4.7 kΩ resistors — one in series with the base (R1) and one between base and emitter (R2) — eliminating two external passives from the BOM. The collector-emitter breakdown voltage is 50 V, and the continuous collector current rating is 500 mA, making it suitable for low-side switching, relay and solenoid drivers, and logic-level interface circuits in 5 V and 3.3 V systems. The 100 MHz transition frequency supports moderate-speed switching applications up to several megahertz.
Saturation and gain — design margin
VCE(sat) is specified at 300 mV maximum with a 2.5 mA base drive and 50 mA collector current — a typical forced-beta of 20, which keeps the transistor in hard saturation. The minimum DC current gain (hFE) is 60 at 50 mA, 5 V. Collector cutoff current is 100 nA maximum, adequate for battery-operated circuits where off-state leakage matters.
Package and power handling
Supplied in the PG-SOT23 package (equivalent to SOT-23-3), the part dissipates up to 330 mW. Surface-mount assembly with standard reflow profiles; the small footprint suits dense PCB layouts in industrial controls, consumer electronics, and telecom modules.
