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BC337

Public Made by Adom

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Changjiang Electronics Tech (CJ) Bipolar Transistors - BJT, TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Datasheet

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Contents

README

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BC337

Changjiang Electronics Tech (CJ) · Bipolar Transistors - BJT · TO-92

BC337 from Changjiang Electronics Tech (CJ), in a TO-92. 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 COLLECTOR passive Collector of the NPN transistor; VCBO 50 V (BC337), VCEO 45 V, continuous collector current 800 mA.
2 BASE passive Base of the NPN transistor; VEBO maximum 5 V.
3 EMITTER passive Emitter of the NPN transistor; reference terminal for the VEBO 5 V rating.

Key specifications

Parameter Value
Manufacturer Changjiang Electronics Tech (CJ)
Package TO-92
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 50 V BC337, Ta=25℃ 1
Collector-Emitter Voltage VCEO 45 V BC337, Ta=25℃ 1
Emitter-Base Voltage VEBO 5 V Ta=25℃ 1
Collector Current - Continuous IC 800 mA Ta=25℃ 1
Total Device Dissipation PD 625 mW Ta=25℃ 1
Junction Temperature Tj 150 ℃ Ta=25℃ 1
Storage Temperature Tstg -55 150 ℃ Ta=25℃ 1
Collector-base breakdown voltage VCBO 50 V IC=100uA, IE=0, BC337 2
Collector-emitter breakdown voltage VCEO 45 V IC=10mA, IB=0, BC337 2
Emitter-base breakdown voltage VEBO 5 V IE=10uA, IC=0 2
Collector cut-off current ICBO 0.1 uA VCB=45V, IE=0, BC337 2
Collector cut-off current ICEO 0.2 uA VCE=40V, IB=0, BC337 2
Emitter cut-off current IEBO 0.1 uA VEB=4 V, IC=0 2
DC current gain hFE(1) 100 630 VCE=1V, IC=100mA, BC337 2
DC current gain hFE(2) 60 VCE=1V, IC=300mA 2
Collector-emitter saturation voltage VCE(sat) 0.7 V IC=500mA, IB=50mA 2
Base-emitter saturation voltage VBE(sat) 1.2 V IC=500mA, IB=50mA 2
Base-emitter voltage VBE 1.2 V VCE=1V, IC=300mA 2
Transition frequency fT 210 MHz VCE=5V, IC=10mA, f=100MHz 2
Collector Output Capacitance Cob 15 pF VCB=10V, IE=0, f=1MHZ 2

CAD (KiCad official)

  • Symbol: BC337
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: bc337-etched.step / bc337-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc337.step / bc337.glb are the bare package body.

Provenance

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

  • Datasheet: Changjiang Electronics Tech (CJ) datasheet (5 pp, sha256 8b4fa2b43eb95d7b, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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