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2SB1189

Public Made by Adom

by adom

ALJ Bipolar (BJT), SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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2SB1189

ALJ · Bipolar (BJT) · SOT-89

2SB1189 from ALJ, 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 terminal of the PNP transistor, with emitter-base breakdown voltage V(BR)EBO of -5 V and emitter-base voltage VEBO limited to -5 V.
2 Collector passive Collector terminal, rated for a collector-base voltage VCBO of -80 V, collector-emitter voltage VCEO of -80 V, and collector current IC of -0.7 A.
3 Emitter passive Emitter terminal of the PNP transistor, with the emitter-base limits of VEBO -5 V given in the maximum ratings.

Key specifications

Parameter Value
Manufacturer ALJ
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-emitter breakdown voltage V(BR)CEO -80 V IC = -2mA, IB = 0 1
Collector-base breakdown voltage V(BR)CBO -80 V IC = -50µA, IE = 0 1
Emitter-base breakdown voltage V(BR)EBO -5 V IE = -50µA, IC = 0 1
Collector cut-off current ICBO -0.5 µA VCB = -50V, IE = 0 1
Emitter cut-off current IEBO -0.5 µA VEB = -4V, IC = 0 1
DC current gain hFE(1) hFE(1) 82 VCE = -5V, IC = -1mA 1
DC current gain hFE(2) hFE(2) 82 390 VCE = -3V, IC = -100mA 1
Collector-emitter saturation voltage VCE(sat) -0.4 V IC = -500mA, IB = -50mA 1
Transition frequency fT 100 MHz VCE = -10V, IC = -50mA, f = 100MHz 1
Output capacitance Cob 20 pF VCB = -10V, IE = 0, f = 1MHz 1
Collector base voltage VCBO -80 V 1
Collector emitter voltage VCEO -80 V 1
Emitter base voltage VEBO -5 V 1
Collector current IC -0.7 A 1
Collector power dissipation PC 0.5 mW 1
Junction temperature Tj 150 °C 1
Storage temperature Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: 2SB1189
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: 2sb1189-etched.step / 2sb1189-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sb1189.step / 2sb1189.glb are the bare package body.

Provenance

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

  • Datasheet: ALJ datasheet (2 pp, sha256 465a42bae06fcc9d, 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