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Infineon Technologies BCR166E6327HTSA1 — Discrete Semiconductors

Infineon BCR166E6327HTSA1 PNP Pre-Biased Transistor, 50 V

MPNBCR166E6327HTSA1
Last Buy

Infineon BCR166E6327HTSA1 PNP pre-biased transistor, 50 V collector-emitter breakdown, 100 mA collector current, 4.7 kOhms base resistor, 47 kOhms emitter-base resistor, 160 MHz transition frequency, SOT-23-3 package, 200 mW power dissipation.

$0.0474Ref. price · indicative, final on quote
Infineon Technologies BCR166E6327HTSA1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

BCR166E6327HTSA1 specifications
ParameterValue
MountingSurface Mount
FET typePNP - Pre-Biased
Voltage - collector emitter breakdown50 V
Current - collector (Ic)100 mA
Current - collector cutoff100nA (ICBO)
DC current gain (hFE) (Min) @ ic, vce70 @ 5mA, 5V
Power - max200 mW
Frequency - transition160 MHz
PackageTape & Reel (TR); Cut Tape (CT)
CaseTO-236-3, SC-59, SOT-23-3
Resistor - base (R1)4.7 kOhms
Resistor - emitter base (R2)47 kOhms
Vce saturation (Max) @ ib, ic300mV @ 500µA, 10mA

Product details

Pre-biased PNP — what the integrated resistors mean

The base resistor (R1) is 4.7 kOhms and the emitter-base resistor (R2) is 47 kOhms, which sets a fixed input threshold and eliminates two external resistors from the BOM. This is a surface-mount device in the TO-236-3 / SC-59 / SOT-23-3 footprint, supplied as PG-SOT23.

50 V, 100 mA — where it fits

Collector-emitter breakdown is rated at 50 V, with a maximum collector current of 100 mA.

160 MHz transition frequency — switching speed

With a transition frequency of 160 MHz, this transistor handles PWM switching well into the hundreds of kilohertz, making it suitable for switched loads in power management or signal conditioning paths. The 100 nA maximum collector cutoff current (ICBO) keeps leakage negligible at room temperature.

Last Buy — sourcing this part

That means Infineon has scheduled this part for discontinuation, and the final window for placing orders through the factory channel is closing. The base product number is BCR166, so check for any remaining factory inventory or distributor stock before committing a long-run build.

Frequently asked questions

Can I use a standard PNP transistor to replace BCR166E6327HTSA1?

Not as a direct drop-in. A standard PNP transistor lacks the integrated 4.7 kOhms base resistor and 47 kOhms emitter-base resistor, so you would need to add those externally. That changes the footprint and BOM. If board space and component count are flexible, a standard PNP like a BC857 or similar with external resistors could work, but the pre-biased design is the reason this part exists.