# KBT5401C

**Kodenshi AUK** · Bipolar Transistors - BJT · SOT-23

KBT5401C from Kodenshi AUK, 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 of the PNP transistor; VCBO and VCEO are rated -160V, VEBO -5V. |
| 2 | E | passive | Emitter of the PNP transistor; emitter-base voltage VEBO is limited to -5V. |
| 3 | C | passive | Collector of the PNP transistor; rated for IC -600mA, VCBO and VCEO -160V, and collector dissipation 200mW. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Kodenshi AUK |
| Package | SOT-23 |
| Category | Transistors |
| 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 |  |  | -160 | V | Ta=25C | 2 |
| Collector-Emitter voltage | VCEO |  |  | -160 | V | Ta=25C | 2 |
| Emitter-Base voltage | VEBO |  |  | -5 | V | Ta=25C | 2 |
| Collector current | IC |  |  | -600 | mA | Ta=25C | 2 |
| Collector dissipation | PC |  |  | 200 | mW | Ta=25C | 2 |
| Junction temperature | Tj |  |  | 150 | ℃ | Ta=25C | 2 |
| Storage temperature | Tstg | -50 |  | 150 | ℃ | Ta=25C | 2 |
| Collector-Base breakdown voltage | BVCBO | -160 |  |  | V | IC=-100μA, IE=0 | 3 |
| Collector-Emitter breakdown voltage | BVCEO | -160 |  |  | V | IC=-1mA, IB=0 | 3 |
| Emitter-Base breakdown voltage | BVEBO | -5 |  |  | V | IE=-10μA, IC=0 | 3 |
| Collector cut-off current | ICBO |  |  | -100 | nA | VCB=-120V, IE=0 | 3 |
| Emitter cut-off current | IEBO |  |  | -100 | nA | VEB=-3V, IC=0 | 3 |
| DC current gain hFE (1) | hFE(1) | 50 |  |  |  | VCE=-5V, IC=-1mA | 3 |
| DC current gain hFE (2) | hFE(2) | 60 |  | 240 |  | VCE=-5V, IC=-10mA | 3 |
| DC current gain hFE (3) | hFE(3) | 50 |  |  |  | VCE=-5V, IC=-50mA | 3 |
| Collector-Emitter saturation voltage (1) | VCE(sat)(1) |  |  | -0.2 | V | IC=-10mA, IB=-1mA | 3 |
| Collector-Emitter saturation voltage (2) | VCE(sat)(2) |  |  | -0.5 | V | IC=-50mA, IB=-5mA | 3 |
| Base-Emitter saturation voltage (1) | VBE(sat)(1) |  |  | -1 | V | IC=-10mA, IB=-1mA | 3 |
| Base-Emitter saturation voltage (2) | VBE(sat)(2) |  |  | -1 | V | IC=-50mA, IB=-5mA | 3 |
| Transition frequency | fT | 100 |  | 400 | MHz | VCE=-10V, IC=-10mA | 3 |
| Collector output capacitance | Cob |  |  | 6 | pF | VCB=-10V, IE=0, f=1MHz | 3 |

## CAD (KiCad official)

- Symbol: `KBT5401C`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `kbt5401c-etched.step` / `kbt5401c-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `kbt5401c.step` / `kbt5401c.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Kodenshi AUK datasheet](docs/kbt5401c-datasheet.pdf) (6 pp, sha256 `037d46f1e20abeaa`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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](docs/kbt5401c-datasheet.pdf)