component
2SB1188-R
Public Made by Adomby adom
ALJ Bipolar (BJT), SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown2SB1188-R
ALJ · Bipolar (BJT) · SOT-89
2SB1188-R 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 | passive | Base terminal of the PNP transistor; emitter-base breakdown voltage V(BR)EBO is -5 V minimum at IE = -50µA, and VEBO is rated -5 V. |
| 2 | Collector | passive | Collector terminal; rated for a collector-base voltage VCBO of -40 V, a collector-emitter voltage VCEO of -32 V, and a collector current IC of -2 A, with 500 mW collector power dissipation. |
| 3 | Emitter | passive | Emitter terminal; the emitter-base voltage rating VEBO is -5 V and the emitter cut-off current IEBO is limited to -1 µA at VEB = -4 V. |
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-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 | ||
| DC current gain | hFE(2) | 180 | 390 | VCE = -3V, IC = -500mA | 1 | ||
| Collector-emitter saturation voltage | VCE(sat) | -0.8 | V | IC = -2A, IB = -0.2A | 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 | 1 | |||
| Collector-emitter voltage | VCEO | -32 | V | 1 | |||
| Emitter-base voltage | VEBO | -5 | V | 1 | |||
| Collector current | IC | -2 | A | 1 | |||
| Collector power dissipation | PC | 500 | mW | 1 | |||
| Junction temperature | Tj | 150 | °C | 1 | |||
| Storage temperature | Tstg | -55 | 150 | °C | 1 | ||
| Thermal resistance, junction to ambient | RθJA | 250 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
2SB1188-R - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
2sb1188-r-etched.step/2sb1188-r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);2sb1188-r.step/2sb1188-r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ALJ datasheet (2 pp, sha256
d323a4ae52529b07, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).