component

2SB1188SQ-Q

Public Made by Adom

by adom

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

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2SB1188SQ-Q

PJSEMI · Bipolar (BJT) · SOT-89

2SB1188SQ-Q from PJSEMI, 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; the Q current-gain group is specified as hFE 120 to 270 at -VCE = 3 V, -IC = 500 mA.
2 Collector passive Collector terminal; ratings are -VCBO 40 V, -VCEO 32 V, -IC 2 A, and collector power dissipation PC 0.5 W.
3 Emitter passive Emitter terminal; the emitter-base rating is -VEBO 5 V, and the junction temperature limit is Tj 150 ℃.

Key specifications

Parameter Value
Manufacturer PJSEMI
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 Saturation Voltage -VCE(sat) 0.8 V at -IC = 2 A, -IB = 200 mA 1
DC Current Gain (Current Gain Group P) hFE 82 180 at -VCE = 3 V, -IC = 500 mA 1
DC Current Gain (Current Gain Group Q) hFE 120 270 at -VCE = 3 V, -IC = 500 mA 1
DC Current Gain (Current Gain Group R) hFE 180 390 at -VCE = 3 V, -IC = 500 mA 1
Collector Base Breakdown Voltage -V(BR)CBO 40 V at -IC = 50 µA 1
Collector Emitter Breakdown Voltage -V(BR)CEO 32 V at -IC = 1 mA 1
Emitter Base Breakdown Voltage -V(BR)EBO 5 V at -IE = 50 µA 1
Collector Base Cutoff Current -ICBO 1 μA at -VCB = 20 V 1
Emitter Base Cutoff Current -IEBO 1 μA at -VEB = 4 V 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 -IC 2 A Ta = 25℃ 1
Collector Power Dissipation PC 0.5 W Ta = 25℃ 1
Junction Temperature Tj 150 ℃ Ta = 25℃ 1
Storage Temperature Range Tstg -55 150 ℃ 1

CAD (KiCad official)

  • Symbol: 2SB1188SQ-Q
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: 2sb1188sq-q-etched.step / 2sb1188sq-q-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sb1188sq-q.step / 2sb1188sq-q.glb are the bare package body.

Provenance

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

  • Datasheet: PJSEMI datasheet (3 pp, sha256 014b4f0b08042a6f, 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