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Contents

README

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2SC3904

Slkor(SLKORMICRO Elec.) · Bipolar (BJT) · SOT-89

2SC3904 from Slkor(SLKORMICRO Elec.), 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 Base input Base of the NPN transistor; VEBO max 6 V and base-emitter saturation voltage max 0.85 V at IC=10 mA, IB=1 mA.
2 Collector passive Collector of the NPN transistor; VCBO 60 V, VCEO 40 V, IC max 200 mA.
3 Emitter passive Emitter of the NPN transistor; reference terminal for VCEO 40 V and VEBO 6 V ratings.

Key specifications

Parameter Value
Manufacturer Slkor(SLKORMICRO Elec.)
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 Voltage VCBO 60 V 1
Collector Emitter Voltage VCEO 40 V 1
Emitter Base Voltage VEBO 6 V 1
Collector Current IC 200 mA 1
Maximum Power Dissipation PD 500 mW 1
Junction Temperature TJ 150 ℃ 1
Storage Temperature Range TSTG -55 150 ℃ 1
DC Current Gain HFE 40 VCE = 1 V, IC = 0.1 mA 2
DC Current Gain HFE 70 VCE = 1 V, IC = 1 mA 2
DC Current Gain HFE 100 300 VCE = 1 V, IC = 10 mA 2
DC Current Gain HFE 60 VCE = 1 V, IC = 50 mA 2
DC Current Gain HFE 30 VCE = 1 V, IC = 100 mA 2
Collector Base Cutoff Current ICBO 50 nA VCB = 30V 2
Emitter Base Cutoff Current IEBO 50 nA VEB = 6 V 2
Collector Base Breakdown Voltage V(BR)CBO 60 V IC = 10 μA 2
Collector Emitter Breakdown Voltage V(BR)CEO 40 V IC = 1 mA 2
Emitter Base Breakdown Voltage V(BR)EBO 6 V IE = 10 μA 2
Collector Emitter Saturation Voltage VCE(sat) 0.2 V IC = 10 mA, IB = 1 mA 2
Collector Emitter Saturation Voltage VCE(sat) 0.3 V IC = 50 mA, IB = 5 mA 2
Base Emitter Saturation Voltage VBE(sat) 0.85 V IC = 10 mA, IB = 1 mA 2
Base Emitter Saturation Voltage VBE(sat) 0.95 V IC = 50 mA, IB = 5 mA 2
Transition Frequency FT 300 MHz VCE = 20 V, IC = 10 mA, f = 100 MHz 2
Output Capacitance Cob 4 pF VCB = 5 V, f = 1 KHz 2

CAD (KiCad official)

  • Symbol: 2SC3904
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: 2sc3904-etched.step / 2sc3904-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sc3904.step / 2sc3904.glb are the bare package body.

Provenance

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

  • Datasheet: Slkor(SLKORMICRO Elec.) datasheet (5 pp, sha256 ca9e77525500f86f, 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