component

BC856W

Public Made by Adom

by adom

Nexperia Bipolar Transistors - BJT, SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttransistorsbc856wfactory-2.0.0extractor-text

Verified BC856W

by Ray · last 4 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

4 Nov 2026RayPublished by the parts factory: tier mfr, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: BC856W · SOT-323 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 13-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: SOT-323_SC-70
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-adev63lm/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.9)
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ bc856w.kicad_sym✓ bc856w.kicad_mod✓ bc856w.step
Spot something wrong? Report it as an issue Propose a fix Records are signed by members of adom.
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 20h ago
viewers bc856w: viewers · Ray 20h ago
bc856w-etched.glb Publish 0.1.0 · Ray 20h ago
bc856w-etched.step bc856w: factory component page (tier=mfr) · Ray 20h ago
bc856w-hero.glb bc856w: hero GLB from the etched model (keeps the MPN mark) · Ray 20h ago
bc856w-hero.overlay.json Publish 0.1.0 · Ray 20h ago
bc856w.glb Publish 0.1.0 · Ray 20h ago
bc856w.kicad_mod Publish 0.1.0 · Ray 20h ago
bc856w.kicad_sym Publish 0.1.0 · Ray 20h ago
bc856w.lbr Publish 0.1.0 · Ray 20h ago
bc856w.step Publish 0.1.0 · Ray 20h ago
package.json Publish 0.1.0 · Ray 20h ago
page.json Set visibility: public · Ray 20h ago
README.md Publish 0.1.0 · Ray 20h ago
verification.json Verified: Published by the parts factory: tier mfr, 3 pins · Ray 20h ago

BC856W

Nexperia · Bipolar Transistors - BJT · SOT-323

BC856W from Nexperia, in a SOT-323. 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 terminal of the PNP transistor (Table 3 pinning, graphic symbol B); the datasheet gives no separate electrical limit for this pin, so the Table 6 limiting values apply to the device.
2 E passive Emitter terminal of the PNP transistor (Table 3 pinning, graphic symbol E); the datasheet gives no separate electrical limit for this pin, so the Table 6 limiting values apply to the device.
3 C passive Collector terminal of the PNP transistor (Table 3 pinning, graphic symbol C); the datasheet gives no separate electrical limit for this pin, so the Table 6 limiting values apply to the device.

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOT-323
Category Transistors
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
collector-base voltage VCBO -80 V open emitter 3
collector-emitter voltage VCEO -65 V open base 3
emitter-base voltage VEBO -5 V open collector 3
collector current IC -100 mA 3
peak collector current ICM -200 mA 3
peak base current IBM -200 mA 3
total power dissipation Ptot 200 mW Tamb ≤ 25 °C [1] 3
junction temperature Tj 150 °C 3
ambient temperature Tamb -65 150 °C 3
storage temperature Tstg -65 150 °C 3
thermal resistance from junction to ambient Rth(j-a) 625 K/W in free air [1] 4
collector-base breakdown voltage V(BR)CBO -80 V IC = -100 µA; IE = 0 A 5
collector-emitter breakdown voltage V(BR)CEO -65 V IC = -2 mA; IB = 0 A 5
emitter-base breakdown voltage V(BR)EBO -5 V IC = 0 A; IE = -100 µA 5
collector-base cut-off current ICBO -1 -15 nA VCB = -30 V; IE = 0 A 5
collector-base cut-off current ICBO -4 µA VCB = -30 V; IE = 0 A; Tj = 150 °C 5
emitter-base cut-off current IEBO -100 nA VEB = -5 V; IC = 0 A 5
DC current gain hFE 125 475 VCE = -5 V; IC = -2 mA 5
collector-emitter saturation voltage VCEsat -75 -300 mV IC = -10 mA; IB = -0.5 mA 5
collector-emitter saturation voltage VCEsat -250 -600 mV IC = -100 mA; IB = -5 mA [1] 5
base-emitter voltage VBE -600 -650 -750 mV VCE = -5 V; IC = -2 mA 5
base-emitter voltage VBE -820 mV VCE = -5 V; IC = -10 mA 5
transition frequency fT 100 MHz VCE = -5 V; IC = -10 mA; f = 100 MHz 5
noise figure NF 2 10 dB IC = -200 µA; VCE = -5 V; RS = 2 kΩ; f = 1 kHz; B = 200Hz 5

CAD (KiCad official)

  • Symbol: BC856W
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323 (KiCad packages3D, STEP)
  • 3D model files: bc856w-etched.step / bc856w-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc856w.step / bc856w.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (13 pp, sha256 6ecc839c70f13953, retrieved 2026-11-04, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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