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2SB1188

Public Made by Adom

by adom

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

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2SB1188

Changjing · Bipolar (BJT) · SOT-89-3L

2SB1188 from Changjing, in a SOT-89-3L. 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; the datasheet gives no pin-specific limit, so it is bounded by the absolute maximum emitter-base voltage VEBO of -5 V.
2 COLLECTOR passive Collector terminal, rated for VCBO -40 V, VCEO -32 V, continuous collector current IC -2 A and collector power dissipation PC 500 mW.
3 EMITTER passive Emitter terminal, rated for emitter-base voltage VEBO -5 V, with the device operating up to a junction temperature TJ of 150 ℃.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-89-3L
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) -0.8 V IC=-2A, IB=-0.2A; pulse measurement 1
DC current gain hFE 82 390 VCE=-3V, IC=-0.5A; pulse measurement 1
Collector-base breakdown voltage V(BR)CBO -40 V IC=-50μA, IE=0 1
Collector-emitter breakdown voltage V(BR)CEO -32 V IC=-1mA, IB=0 1
Emitter-base breakdown voltage V(BR)EBO -5 V IE=-50μA, IC=0 1
Collector cut-off current ICBO -1 μA VCB=-20V, IE=0 1
Emitter cut-off current IEBO -1 μA VEB=-4V, IC=0 1
Transition frequency fT 100 MHz VCE=-5V, IC=-0.5A, f=30MHz 1
Output capacitance Cob 50 pF VCB=-10V, IE=0, f=1MHz 1
Collector-base voltage VCBO -40 V Ta=25℃ 1
Collector-emitter voltage VCEO -32 V Ta=25℃ 1
Emitter-base voltage VEBO -5 V Ta=25℃ 1
Collector current (continuous) IC -2 A Ta=25℃ 1
Collector power dissipation PC 500 mW Ta=25℃ 1
Junction temperature TJ 150 ℃ 1
Storage temperature Tstg -55 150 ℃ 1

CAD (KiCad official)

  • Symbol: 2SB1188
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3L (KiCad packages3D, STEP)
  • 3D model files: 2sb1188-etched.step / 2sb1188-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sb1188.step / 2sb1188.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (2 pp, sha256 4ad68746daa31e6e, 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