component

BCP55-MS

Public Made by Adom

by adom

MSKSEMI Bipolar Transistors - BJT, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttriode-mos tube-transistorbcp55-msfactory-2.0.0extractor-text

Verified BCP55-MS

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier lcsc, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: BCP55-MS · SOT-223 · 3 pins
  • ✓copper: 4 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 5-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: SOT-223-3_TabPin2
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-sb7gkr50/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.4)
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ bcp55-ms.kicad_sym✓ bcp55-ms.kicad_mod✓ bcp55-ms.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 13h ago
viewers bcp55-ms: viewers · Ray 13h ago
bcp55-ms-etched.glb Publish 0.1.0 · Ray 13h ago
bcp55-ms-etched.step bcp55-ms: factory component page (tier=lcsc) · Ray 13h ago
bcp55-ms-hero.glb bcp55-ms: hero GLB from the etched model (keeps the MPN mark) · Ray 13h ago
bcp55-ms-hero.overlay.json Publish 0.1.0 · Ray 13h ago
bcp55-ms.glb Publish 0.1.0 · Ray 13h ago
bcp55-ms.kicad_mod Publish 0.1.0 · Ray 13h ago
bcp55-ms.kicad_sym Publish 0.1.0 · Ray 13h ago
bcp55-ms.lbr Publish 0.1.0 · Ray 13h ago
bcp55-ms.step Publish 0.1.0 · Ray 13h ago
package.json Publish 0.1.0 · Ray 13h ago
page.json Set visibility: public · Ray 13h ago
README.md Publish 0.1.0 · Ray 13h ago
verification.json Verified: Published by the parts factory: tier lcsc, 3 pins · Ray 13h ago

BCP55-MS

MSKSEMI · Bipolar Transistors - BJT · SOT-223

BCP55-MS from MSKSEMI, in a SOT-223. 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 BASE input Base terminal of the NPN transistor, with emitter-base voltage VEBO rated at 5 V.
2 COLLECTOR passive Collector terminal of the NPN transistor, rated up to 1 A continuous collector current and 45 to 100 V collector-base voltage depending on variant.
3 EMITTER passive Emitter terminal of the NPN transistor, referenced to the 5 V emitter-base rating (VEBO).

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package SOT-223
Category Triode/MOS Tube/Transistor
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 breakdown voltage (BCP55-MS) V(BR)CBO 60 V IC= 0.1mA,IE=0 2
Collector-emitter breakdown voltage (BCP55-MS) V(BR)CEO 60 V IC= 10mA,IB=0 2
Base-emitter breakdown voltage V(BR)EBO 5 V IE= 10μA,IC=0 2
Collector cut-off current ICBO 100 nA VCB= 30 V, IE=0 2
DC current gain hFE(1) 25 VCE= 2V, IC=5mA 2
DC current gain hFE(2) 63 250 VCE= 2V, IC=150mA 2
Collector-emitter saturation voltage VCE(sat) 0.5 V IC=500mA,IB=50mA 2
Base-emitter voltage VBE 1 V VCE=2V, IC=500mA 2
Transition frequency fT 100 MHz VCE=10V,IC=50mA,f=100MHz 2
Collector-base voltage (BCP55-MS) VCBO 60 V Ta=25℃ 2
Collector-emitter voltage (BCP55-MS) VCEO 60 V Ta=25℃ 2
Emitter-base voltage VEBO 5 V Ta=25℃ 2
Collector current, continuous IC 1 A Ta=25℃ 2
Collector power dissipation PC 1.5 W Ta=25℃ 2
Storage temperature range Tstg -65 150 ℃ 2
Thermal resistance, junction to ambient RθJA 83.3 ℃/W 2

CAD (KiCad official)

  • Symbol: BCP55-MS
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: bcp55-ms-etched.step / bcp55-ms-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bcp55-ms.step / bcp55-ms.glb are the bare package body.

Provenance

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

  • Datasheet: MSKSEMI datasheet (5 pp, sha256 c085b41541a26003, retrieved 2026-11-05, tier: lcsc)
  • 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