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2SC4115S

Changjing · Bipolar (BJT) · TO-92S

2SC4115S from Changjing, in a TO-92S. 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 EMITTER passive Emitter of the NPN transistor; the datasheet rates emitter-base voltage VEBO at 6 V max and gives emitter-base breakdown V(BR)EBO of 6 V at IE=0.05 mA.
2 COLLECTOR passive Collector of the NPN transistor; rated at 40 V VCBO, 20 V VCEO and 3 A collector current IC, with 300 mW collector power dissipation.
3 BASE passive Base of the NPN transistor; the datasheet gives DC current gain hFE of 120 to 560 at VCE=2 V, IC=100 mA, and VCE(sat) of 0.5 V max at IC=2 A, IB=0.1 A.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-92S
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 40 V IC=0.05mA,IE=0 2
Collector-emitter breakdown voltage V(BR)CEO 20 V IC=1mA,IB=0 2
Emitter-base breakdown voltage V(BR)EBO 6 V IE=0.05mA,IC=0 2
Collector cut-off current ICBO 0.1 μA VCB=30V,IE=0 2
Emitter cut-off current IEBO 0.1 μA VEB=5V,IC=0 2
DC current gain hFE 120 560 VCE=2V, IC=100mA 2
Collector-emitter saturation voltage VCE(sat) 0.5 V IC=2A,IB=0.1A; pulse test 2
Collector output capacitance Cob 25 pF VCB=10V,IE=0, f=1MHz 2
Transition frequency fT 290 MHz VCE=2V,IC=0.5A, f=100MHz 2
Collector-Base Voltage VCBO 40 V 1
Collector-Emitter Voltage VCEO 20 V 1
Emitter-Base Voltage VEBO 6 V 1
Collector Current IC 3 A 1
Collector Power Dissipation PC 300 mW 1
Thermal Resistance From Junction To Ambient RθJA 417 ℃/W 1
Operation Junction and Storage Temperature Range TJ,Tstg -55 150 ℃ 1

CAD (KiCad official)

  • Symbol: 2SC4115S
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92S (KiCad packages3D, STEP)
  • 3D model files: 2sc4115s-etched.step / 2sc4115s-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sc4115s.step / 2sc4115s.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (5 pp, sha256 0bd806f81b6380bc, retrieved 2026-10-18, 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