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2SC3906KT146R

Public Made by Adom

by adom

ROHM Semicon Bipolar Transistors - BJT, TO-236-3(SOT-23-3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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2SC3906KT146R

ROHM Semicon · Bipolar Transistors - BJT · TO-236-3(SOT-23-3)

2SC3906KT146R from ROHM Semicon, in a TO-236-3(SOT-23-3). 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 terminal of the NPN transistor; VEBO max 5 V and BVEBO min 5 V at IE = 50µA.
2 Base passive Base terminal of the NPN transistor; IEBO max 500 nA at VEB = 4V.
3 Collector passive Collector terminal; VCEO 120 V, VCBO 120 V, IC max 50 mA.

Key specifications

Parameter Value
Manufacturer ROHM Semicon
Package TO-236-3(SOT-23-3)
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 120 V Ta = 25°C 2
Collector-emitter voltage VCEO 120 V Ta = 25°C 2
Emitter-base voltage VEBO 5 V Ta = 25°C 2
Collector current IC 50 mA Ta = 25°C 2
Power dissipation PD 200 mW Each terminal mounted on a reference land; Ta = 25°C 2
Junction temperature Tj 150 ℃ Ta = 25°C 2
Range of storage temperature Tstg -55 150 ℃ Ta = 25°C 2
Collector-base breakdown voltage BVCBO 120 V IC = 50μA 2
Collector-emitter breakdown voltage BVCEO 120 V IC = 1mA 2
Emitter-base breakdown voltage BVEBO 5 V IE = 50μA 2
Collector cut-off current ICBO 500 nA VCB = 100V 2
Emitter cut-off current IEBO 500 nA VEB = 4V 2
Collector-emitter saturation voltage VCE(sat) 500 mV IC = 10mA, IB = 1mA 2
DC current gain hFE 180 560 VCE = 6V, IC = 2mA 2
Transition frequency fT 140 MHz VCE = 12V, IE = -2mA, f = 100MHz 2
Output capacitance Cob 2.5 pF VCB = 12V, IE = 0A, f = 1MHz 2

CAD (KiCad official)

  • Symbol: 2SC3906KT146R
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: TO-236-3(SOT-23-3) (KiCad packages3D, STEP)
  • 3D model files: 2sc3906kt146r-etched.step / 2sc3906kt146r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sc3906kt146r.step / 2sc3906kt146r.glb are the bare package body.

Provenance

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

  • Datasheet: ROHM Semicon datasheet (10 pp, sha256 3f390bc890d60cbb, retrieved 2026-10-22, tier: manufacturer)
  • 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