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Infineon Technologies BCR129WH6327 — Discrete Semiconductors

BCR129WH6327 NPN Pre-Biased Transistor, 50 V, 100 mA, SC-70

MPNBCR129WH6327
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Infineon BCR129WH6327 NPN pre-biased transistor, 50 V VCEO, 100 mA Ic, 150 MHz transition frequency, 10 kΩ base resistor, SC-70 SOT-323 package, surface mount.

$0.0400Ref. price · indicative, final on quote
Infineon Technologies BCR129WH6327 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BCR129WH6327 specifications
ParameterValue
MountingSurface Mount
FET typeNPN - Pre-Biased
Voltage - collector emitter breakdown50 V
Current - collector (Ic)100 mA
Current - collector cutoff100nA (ICBO)
DC current gain (hFE) (Min) @ ic, vce120 @ 5mA, 5V
Power - max250 mW
Frequency - transition150 MHz
PackageBulk
CaseSC-70, SOT-323
Resistor - base (R1)10 kOhms
Vce saturation (Max) @ ib, ic300mV @ 500µA, 10mA

Product details

Pre-biased NPN in a tiny SC-70

The Infineon BCR129WH6327 is an NPN pre-biased transistor that integrates a 10 kΩ base resistor (R1) into the same SC-70 SOT-323 package. This eliminates one external resistor per switching node, which simplifies the BOM and shrinks the layout for high-density boards.

Saturation and drive margin

VCE(sat) is specified at 300 mV maximum with a base current of 500 µA and collector current of 10 mA. Collector cutoff current is 100 nA maximum, which keeps leakage negligible in battery-powered or high-impedance circuits.

Package and power handling

Housed in a PG-SOT323-3-1 package (SC-70 equivalent), this is a three-lead surface-mount device. Maximum power dissipation is 250 mW, so it suits low-power switching and signal conditioning rather than continuous high-current loads. The small footprint makes it a candidate for space-constrained designs like sensor modules, I/O blocks, and portable equipment.

Frequently asked questions

What is the closest pin-compatible alternative to BCR129WH6327?

Several Infineon pre-biased NPN transistors in the same SOT323 package share the same pinout and similar ratings. The key difference is the base resistor value; the BCR129WH6327 uses a 10 kΩ R1. Parts with different R1 values (e.g., 2.2 kΩ or 47 kΩ) are not drop-in replacements without adjusting the drive circuit.