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BC817-25-QR

Public Made by Adom

by adom

Nexperia Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BC817-25-QR

Nexperia · Bipolar (BJT) · SOT-23

BC817-25-QR from Nexperia, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 B input Base of the NPN transistor; VEBO limit is 5 V and peak base current IBM is 200 mA (single pulse, tp ≤ 1 ms).
2 E passive Emitter of the NPN transistor; emitter-base breakdown voltage V(BR)EBO is 5 V minimum.
3 C passive Collector of the NPN transistor; VCEO is 45 V, VCBO is 50 V, and IC is 500 mA continuous (1 A peak).

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOT-23
Category Transistors/Thyristors
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
DC current gain hFE 160 400 BC817-25-Q; VCE = 1 V; IC = 100 mA; Tamb = 25 °C; pulsed; tp ≤ 300 µs; δ ≤ 0.02 5
DC current gain hFE 40 VCE = 1 V; IC = 500 mA; Tamb = 25 °C; pulsed; tp ≤ 300 µs; δ ≤ 0.02 5
Collector-base voltage VCBO 50 V open emitter; Tamb = 25 °C 3
Collector-emitter voltage VCEO 45 V open base; Tamb = 25 °C 3
Emitter-base voltage VEBO 5 V open collector; Tamb = 25 °C 3
Collector current IC 500 mA Tamb = 25 °C 3
Peak collector current ICM 1 A single pulse; tp ≤ 1 ms; Tamb = 25 °C 3
Peak base current IBM 200 mA single pulse; tp ≤ 1 ms; Tamb = 25 °C 3
Total power dissipation Ptot 250 mW Tamb ≤ 25 °C; FR4 PCB, single-sided copper, standard footprint 3
Total power dissipation Ptot 345 mW FR4 PCB, single-sided copper, mounting pad for collector 1 cm2 3
Junction temperature Tj 150 °C 3
Ambient temperature Tamb -65 150 °C 3
Storage temperature Tstg -65 150 °C 3
Thermal resistance junction to ambient Rth(j-a) 500 K/W in free air; FR4 PCB, single-sided copper, tin-plated, standard footprint 4
Thermal resistance junction to ambient Rth(j-a) 362 K/W FR4 PCB, single-sided copper, tin-plated, mounting pad for collector 1 cm2 4
Collector-base breakdown voltage V(BR)CBO 50 V IC = 100 µA; IE = 0 A; Tamb = 25 °C 5
Collector-emitter breakdown voltage V(BR)CEO 45 V IC = 10 mA; IE = 0 A; Tamb = 25 °C 5
Emitter-base breakdown voltage V(BR)EBO 5 V IE = 100 µA; IC = 0 A; Tamb = 25 °C 5
Collector-base cut-off current ICBO 100 nA VCB = 20 V; IE = 0 A; Tamb = 25 °C 5
Collector-base cut-off current ICBO 5 µA VCB = 20 V; IE = 0 A; Tj = 150 °C 5
Emitter-base cut-off current IEBO 100 nA VEB = 5 V; IC = 0 A; Tamb = 25 °C 5
Collector-emitter saturation voltage VCEsat 700 mV IC = 500 mA; IB = 50 mA; Tamb = 25 °C; pulsed; tp ≤ 300 µs; δ ≤ 0.02 5
Base-emitter voltage VBE 1.2 V VCE = 1 V; IC = 500 mA; Tamb = 25 °C; pulsed; tp ≤ 300 µs; δ ≤ 0.02 5
Transition frequency fT 100 MHz VCE = 5 V; IC = 10 mA; f = 100 MHz; Tamb = 25 °C 5

CAD (KiCad official)

  • Symbol: BC817-25-QR
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bc817-25-qr-etched.step / bc817-25-qr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc817-25-qr.step / bc817-25-qr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Nexperia datasheet (13 pp, sha256 38853c63a5ce63b1, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF