component
KST9012
Public Made by Adomby adom
KEXIN Bipolar (BJT), SOT-23. 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
markdownKST9012
KEXIN · Bipolar (BJT) · SOT-23
KST9012 from KEXIN, in a SOT-23. 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 VEBO of -5 V and VBE(sat) of -1.2 V at IC = -500 mA, IB = -50 mA. |
| 2 | Emitter | passive | Emitter terminal of the PNP transistor; the emitter-base breakdown voltage is -5 V minimum at IE = -100 uA, and the absolute maximum VEBO is -5 V. |
| 3 | Collector | passive | Collector terminal of the PNP transistor; absolute maximum ratings are VCBO -40 V, VCEO -25 V, continuous IC -500 mA, and collector power dissipation PC 300 mW. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | KEXIN |
| Package | SOT-23 |
| 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 | VCBO | -40 | V | Ic= -100u A, I E=0 | 1 | ||
| Collector - emitter breakdown voltage | VCEO | -25 | V | IC= -1 mA , IB=0 | 1 | ||
| Emitter - base breakdown voltage | VEBO | -5 | V | IE= -100uA, I C=0 | 1 | ||
| Collector cut - off current | ICBO | -0.1 | A | VCB=- 40V, IE=0 | 1 | ||
| Emitter cut - off current | IEBO | -0.1 | A | VEB=- 5V, IC=0 | 1 | ||
| DC current gain | hFE | 120 | 400 | VCE=-1V, IC= -50mA | 1 | ||
| Collector - emitter saturation voltage | VCE(sat) | -0.6 | V | IC= -500 mA, IB= -50mA | 1 | ||
| Base - emitter voltage | VBE(sat) | -1.2 | V | IC= -500 mA, IB=- 50mA | 1 | ||
| Collector output capacitance | Cob | 5 | pF | VCB=-10V,IE=0,f=1MHz | 1 | ||
| Transition frequency | fT | 150 | MHz | VCE=-6V, IC=-20mA,f=30MHz | 1 | ||
| Collector - Base Voltage | VCBO | -40 | V | Ta = 25 | 1 | ||
| Collector - Emitter Voltage | VCEO | -25 | V | Ta = 25 | 1 | ||
| Emitter - Base Voltage | VEBO | -5 | V | Ta = 25 | 1 | ||
| Collector Current to Continuous | IC | -500 | mA | Ta = 25 | 1 | ||
| Collector Power Dissipation | PC | 300 | mW | Ta = 25 | 1 | ||
| Junction Temperature | Tj | 150 | 1 | ||||
| Storage Temperature | Tstg | -55 | 150 | 1 |
CAD (KiCad official)
- Symbol:
KST9012 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
kst9012-etched.step/kst9012-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);kst9012.step/kst9012.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KEXIN datasheet (2 pp, sha256
fe2fe1b155b01c26, retrieved 2026-10-18, 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).