component
2N5401
Public Made by Adomby adom
LangJie 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
markdown2N5401
LangJie · Bipolar (BJT) · SOT-23
2N5401 from LangJie, 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 | B | input | Base terminal of the PNP transistor, with emitter-base voltage limited to VEBO -5 V and base-emitter saturation voltage VBE(sat) of -1 V maximum at IC=-50mA, IB=-5mA. |
| 2 | E | passive | Emitter terminal of the PNP transistor, with emitter-base breakdown voltage V(BR)EBO of -5 V minimum at IE=-10µA. |
| 3 | C | passive | Collector terminal of the PNP transistor, rated for collector-base voltage VCBO -160 V, collector-emitter voltage VCEO -150 V, collector current Ic 0.6 A and collector power dissipation PD 0.3 W. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LangJie |
| 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 | V(BR)CBO | -160 | V | IC=-100µA, IE=0 | 1 | ||
| Collector-emitter breakdown voltage | V(BR)CEO | -150 | V | IC=-1mA, IB=0 | 1 | ||
| Emitter-base breakdown voltage | V(BR)EBO | -5 | V | IE=-10µA, IC=0 | 1 | ||
| Collector cut-off current | ICBO | -0.1 | μA | VCB=-120V, IE=0 | 1 | ||
| Emitter cut-off current | IEBO | -0.1 | μA | VEB=-4V, IC=0 | 1 | ||
| DC current gain hFE(1) | hFE(1) | 80 | VCE=-5V, IC=-1mA; pulse width ≤300μs, duty cycle≤2.0% | 1 | |||
| DC current gain hFE(2) | hFE(2) | 100 | 300 | VCE=-5V, IC=-10mA; pulse width ≤300μs, duty cycle≤2.0% | 1 | ||
| DC current gain hFE(3) | hFE(3) | 50 | VCE=-5V, IC=-50mA; pulse width ≤300μs, duty cycle≤2.0% | 1 | |||
| Collector-emitter saturation voltage | VCE(sat)1 | -0.2 | V | IC=-10mA, IB=-1mA; pulse width ≤300μs, duty cycle≤2.0% | 1 | ||
| Collector-emitter saturation voltage | VCE(sat)2 | -0.5 | V | IC=-50mA, IB=-5mA; pulse width ≤300μs, duty cycle≤2.0% | 1 | ||
| Base-emitter saturation voltage | VBE(sat)1 | -1 | V | IC=-10mA, IB=-1mA; pulse width ≤300μs, duty cycle≤2.0% | 1 | ||
| Transition frequency | FT | 100 | MHz | VCE=-5V, IC=-10mA, f=30MHz | 1 | ||
| Collector-base voltage | VCBO | -160 | V | 1 | |||
| Collector-emitter voltage | VCEO | -150 | V | 1 | |||
| Emitter-base voltage | VEBO | -5 | V | 1 | |||
| Collector current | Ic | 0.6 | A | 1 | |||
| Collector power dissipation | PD | 0.3 | W | 1 | |||
| Junction temperature (max.) | Tj | 150 | ℃ | 1 | |||
| Storage temperature | Tstg | -55 | 150 | ℃ | 1 | ||
| Thermal resistance from junction to ambient | RθJA | 416 | ℃/W | 1 |
CAD (KiCad official)
- Symbol:
2N5401 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
2n5401-etched.step/2n5401-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);2n5401.step/2n5401.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LangJie datasheet (3 pp, sha256
021c6ef8e25c3bc1, retrieved 2026-10-09, 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).