component

2SC2873U

Public Made by Adom

by adom

CBI Bipolar (BJT), SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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2SC2873U

CBI · Bipolar (BJT) · SOT-89

2SC2873U from CBI, in a SOT-89. 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; emitter-base breakdown voltage V(BR)EBO is 5 V min and absolute maximum VEBO is 5 V.
2 C passive Collector (also the tab); VCEO is 50 V, VCBO is 50 V, and collector current IC is 2 A maximum.
3 E passive Emitter; main current return terminal of the NPN transistor, with total power dissipation PC of 500 mW.

Key specifications

Parameter Value
Manufacturer CBI
Package SOT-89
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
Collector-base breakdown voltage V(BR)CBO 50 V IC=100µA,IE=0 1
Collector-emitter breakdown voltage V(BR)CEO 50 V IC=1mA,IB=0 1
Emitter-base breakdown voltage V(BR)EBO 5 V IE=100µA,IC=0 1
Collector cut-off current ICBO 0.1 µA VCB=50V,IE=0 1
Emitter cut-off current IEBO 0.1 µA VEB=5V,IC=0 1
DC current gain hFE(1) 70 240 VCE=2V, IC=0.5A 1
DC current gain hFE(2) 20 VCE=2V, IC=2A 1
Collector-emitter saturation voltage VCE(sat) 0.5 V IC=1A,IB=50mA 1
Base-emitter saturation voltage VBE(sat) 1.2 V IC=1A,IB=50mA 1
Transition frequency fT 120 MHz VCE=2V,IC=0.5A 1
Collector output capacitance Cob 30 pF VCB=10V, IE=0, f=1MHz 1
Collector-Base Voltage VCBO 50 V Ta=25℃ 1
Collector-Emitter Voltage VCEO 50 V Ta=25℃ 1
Emitter-Base Voltage VEBO 5 V Ta=25℃ 1
Collector Current IC 2 A Ta=25℃ 1
Collector Power Dissipation PC 500 mW Ta=25℃ 1
Junction Temperature Tj 150 ℃ 1
Storage Temperature Tstg -55 150 ℃ 1
Thermal Resistance From Junction To Ambient RθJA 250 ℃/W 1

CAD (KiCad official)

  • Symbol: 2SC2873U
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: 2sc2873u-etched.step / 2sc2873u-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sc2873u.step / 2sc2873u.glb are the bare package body.

Provenance

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

  • Datasheet: CBI datasheet (3 pp, sha256 cbefd354fccb3e90, 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