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Infineon Technologies BCR 129T E6327 — Discrete Semiconductors
Infineon Technologies

Infineon BCR 129T E6327 NPN Pre-Biased Transistor, 50 V

MPNBCR 129T E6327
End of Life

Infineon BCR 129T E6327 NPN pre-biased transistor, 50 V Vce, 100 mA Ic, 150 MHz ft, 10 kOhm base resistor, SC-75 SMD package.

$0.1900Ref. price · indicative, final on quote
BCR 129T E6327 datasheet
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

BCR 129T E6327 Technical Specifications
ParameterValue
Mounting typeSurface 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
Frequency150 MHz
PackageTape & Reel (TR)
CaseSC-75, SOT-416
Resistor - base (R1)10 kOhms
Vce saturation (Max) @ ib, ic300mV @ 500µA, 10mA

Product details

Pre-biased NPN for space-constrained switching

The Infineon BCR 129T E6327 is an NPN pre-biased transistor in a SC-75 (SOT-416) surface-mount package. It integrates a 10 kOhm base resistor (R1), eliminating the need for an external base resistor in switching applications. Rated for 50 V collector-emitter breakdown and 100 mA continuous collector current, it suits low-power load switching, relay drivers, and logic-level interface circuits where board space is at a premium.

Switching performance and drive margin

With a transition frequency of 150 MHz and a minimum DC current gain of 120 at 5 mA collector current, the BCR 129T E6327 provides clean switching up to moderate frequencies. The 300 mV saturation voltage at 500 µA base drive and 10 mA collector current keeps conduction losses low in saturated switching. The integrated 10 kOhm base resistor sets the drive current for typical logic-level inputs, simplifying the BOM and reducing component count.

Package and thermal considerations

Housed in the SC-75 (SOT-416) package, the BCR 129T E6327 occupies minimal board area. Maximum power dissipation is 250 mW, so thermal derating is necessary when operating near the collector current limit at elevated ambient temperatures.

Frequently asked questions

Is BCR 129T E6327 obsolete?

There is no indication of discontinuation or last-time-buy status.

What is the equivalent of BCR 129T E6327?

The BCR 129T E6327 is a specific variant of the BCR 129 base number. The suffix 'T' and 'E6327' denote the SC-75 package and tape-and-reel packaging, respectively. A direct pin-compatible equivalent would be another Infineon BCR 129 variant in the same package, such as the BCR 129T H6327 (different reel quantity). For a functional equivalent with the same 10 kOhm base resistor and 50 V / 100 mA ratings, consider the DTC114E series from ROHM or the PDTC114E series from Nexperia, but verify the package footprint (SC-75 vs SOT-23) before substitution.

Can BCR 129T E6327 be used in switching circuits?

Yes, the BCR 129T E6327 is designed for switching applications. Its 150 MHz transition frequency and 300 mV saturation voltage at 10 mA collector current make it suitable for low-frequency load switching, relay drivers, and logic-level interface circuits. The integrated base resistor simplifies drive from a microcontroller GPIO.