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Infineon Technologies BC817K25WH6327XTSA1 — Discrete Semiconductors

BC817K25WH6327XTSA1 NPN transistor, 45 V, 500 mA, SC-70

MPNBC817K25WH6327XTSA1
NRND

Infineon BC817K25WH6327XTSA1 NPN general-purpose transistor, 45 V Vce, 500 mA Ic, 170 MHz fT, 250 mW Pd, SC-70/SOT-323 package, Tape & Reel.

$0.0529Ref. price · indicative, final on quote
Infineon Technologies BC817K25WH6327XTSA1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

BC817K25WH6327XTSA1 specifications
ParameterValue
MountingSurface Mount
FET typeNPN
Voltage - collector emitter breakdown45 V
Current - collector (Ic)500 mA
Current - collector cutoff100nA (ICBO)
DC current gain (hFE) (Min) @ ic, vce160 @ 100mA, 1V
Power - max250 mW
Frequency - transition170MHz
Operating temperature150°C(TJ)
PackageTape & Reel (TR)
CaseSC-70, SOT-323
Vce saturation (Max) @ ib, ic700mV @ 50mA, 500mA

Product details

45 V, 500 mA NPN in SC-70 — what the ratings mean

The Infineon BC817K25WH6327XTSA1 is a general-purpose NPN transistor in a SC-70 (SOT-323) surface-mount package. Maximum power dissipation is 250 mW. The device is part of the BC817 family, a widely used 45 V / 500 mA NPN complement to the BC807 PNP series, suited for low-to-medium current switching and driver stages in industrial and consumer electronics.

This part carries a Not Recommended for New Design (NRND) status. For existing BOM lines, Infineon continues to support the BC817 family through the base product number BC817, which covers multiple hFE groupings and package variants. The NRND flag means the specific suffix K25WH6327XTSA1 is not the recommended choice for new board spins. A direct drop-in replacement within the BC817 family should be qualified by hFE bin and package code — the PG-SOT323 footprint is shared across several BC817 variants.

hFE floor and saturation — switching margin

Minimum DC current gain (hFE) is 160 at 100 mA collector current and 1 V Vce. Vce saturation is specified at 700 mV maximum with 50 mA base current and 500 mA collector current — a useful figure for estimating drive losses in saturated switching. Collector cutoff current is 100 nA maximum, which matters for low-leakage applications like bias networks or high-impedance nodes.

Frequently asked questions

Is BC817K25WH6327XTSA1 obsolete?

It is not yet discontinued, but Infineon advises against using it in new designs. For existing production, the BC817 family remains available through distribution, and alternative hFE-suffix variants in the same PG-SOT323 footprint can be qualified as drop-in replacements.

What is the replacement for BC817K25WH6327XTSA1?

The base product BC817 covers multiple hFE groupings and package options. A pin-compatible replacement should be selected from the BC817 family with the same PG-SOT323 package and matching hFE bin (K25 indicates a specific hFE range). Qualify the alternative by testing hFE at the operating current and Vce saturation at the load current.

What are the specifications of BC817K25WH6327XTSA1?

NPN transistor, 45 V Vce breakdown, 500 mA Ic max, 170 MHz fT, 250 mW power dissipation, SC-70/SOT-323 package, surface mount. Minimum hFE of 160 at 100 mA / 1 V, Vce saturation 700 mV max at 50 mA base / 500 mA collector, cutoff current 100 nA max.