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Contents

README

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2SB1690KT146

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

2SB1690KT146 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 lead; the datasheet's absolute maximum ratings are VEBO −6 V and IC −2 A continuous (−4 A pulsed, single pulse Pw=1ms) for the device.
2 Base passive Base lead; the datasheet gives VCE(sat) ≤ −180 mV at IC = −1 A / IB = −50 mA and DC current gain hFE of 270 to 680 at VCE = −2 V, IC = −200 mA.
3 C passive Collector lead; the datasheet's absolute maximum ratings are VCBO −15 V, VCEO −12 V, IC −2 A continuous (−4 A pulsed), and PC 200 mW.

Key specifications

Parameter Value
Manufacturer ROHM Semicon
Package TO-236-3(SOT-23-3)
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-emitter saturation voltage VCE(sat) -120 -180 mV IC= -1A, IB= -50mA 1
DC current transfer ratio hFE 270 680 VCE= -2V, IC= -200mA 1
Collector-base breakdown voltage BVCBO -15 V IC= -10µA 1
Collector-emitter breakdown voltage BVCEO -12 V IC= -1mA 1
Emitter-base breakdown voltage BVEBO -6 V IE= -10µA 1
Collector cutoff current ICBO -100 nA VCB= -15V 1
Emitter cutoff current IEBO -100 nA VEB= -6V 1
Collector-base voltage VCBO -15 V 1
Collector-emitter voltage VCEO -12 V 1
Emitter-base voltage VEBO -6 V 1
Collector current (DC) IC -2 A 1
Collector current (pulsed) IC -4 A Single pulse Pw=1ms 1
Collector power dissipation PC 200 mW 1
Junction temperature Tj 150 °C 1
Storage temperature Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: 2SB1690KT146
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: TO-236-3(SOT-23-3) (KiCad packages3D, STEP)
  • 3D model files: 2sb1690kt146-etched.step / 2sb1690kt146-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sb1690kt146.step / 2sb1690kt146.glb are the bare package body.

Provenance

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

  • Datasheet: ROHM Semicon datasheet (3 pp, sha256 28481c8736d6b42d, retrieved 2026-10-17, 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