component
KMBT3906
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
markdownKMBT3906
KEXIN · Bipolar (BJT) · SOT-23
KMBT3906 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 this PNP transistor; the datasheet gives the emitter-base breakdown limit VEBO as -5 V and the absolute maximum emitter-base voltage as -5 V. |
| 2 | Emitter | passive | Emitter terminal of this PNP transistor; the emitter-base breakdown voltage VEBO is -5 V minimum at IE = -100 µA with IC = 0. |
| 3 | Collector | passive | Collector terminal of this PNP transistor; rated at VCBO -40 V, VCEO -40 V, and continuous collector current IC -0.2 A, with collector dissipation PC of 0.3 W. |
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 Voltage | VCBO | -40 | V | 1 | |||
| Collector-Emitter Voltage | VCEO | -40 | V | 1 | |||
| Emitter-Base Voltage | VEBO | -5 | V | 1 | |||
| Collector Current-Continuous | IC | -0.2 | A | 1 | |||
| Collector Dissipation | PC | 0.3 | W | 1 | |||
| Junction and Storage Temperature | TJ, Tstg | -55 | 150 | 1 | |||
| Collector-base breakdown voltage | VCBO | -40 | V | Ic= -100 ìA IE=0 | 1 | ||
| Collector-emitter breakdown voltage | VCEO | -40 | V | Ic= -1 mA IB=0 | 1 | ||
| Emitter-base breakdown voltage | VEBO | -5 | V | IE= -100 ìA IC=0 | 1 | ||
| Collector cut-off current | IcBO | -0.1 | A | VCB= -40 V , IE=0 | 1 | ||
| Collector cut-off current | IcEO | -50 | nA | VCE= -40 V , VBE(off)=-3V | 1 | ||
| Emitter cut-off current | IEBO | -0.1 | A | VEB= -5V , IC=0 | 1 | ||
| DC current gain | hFE | 100 | 300 | VCE= -1V, IC= -10mA | 1 | ||
| DC current gain | hFE | 60 | VCE= -1V, IC= -50mA | 1 | |||
| Collector-emitter saturation voltage | VCE(sat) | -0.3 | V | IC=-50 mA, IB= -5mA | 1 | ||
| Base-emitter saturation voltage | VBE(sat) | -0.95 | V | IC=-50 mA, IB= -5mA | 1 | ||
| Transition frequency | fT | 250 | MHz | VCE= -20V, IC= -10mA, f=100MHz | 1 |
CAD (KiCad official)
- Symbol:
KMBT3906 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
kmbt3906-etched.step/kmbt3906-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);kmbt3906.step/kmbt3906.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KEXIN datasheet (2 pp, sha256
aff64c096620bd0b, 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).