# BC807-40

**Nexperia** · Bipolar (BJT) · SOT-23

BC807-40 from Nexperia, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | B | input | Base terminal; control input with DC current gain hFE of 250-600 at VCE = −1 V and IC = −100 mA (Tamb = 25 °C). |
| 2 | E | output | Emitter terminal; rated for continuous collector current of −500 mA at Tamb = 25 °C. |
| 3 | C | output | Collector terminal; rated for maximum collector-emitter voltage of −45 V (open base, Tamb = 25 °C) and peak collector current of −1 A (tp ≤ 1 ms, Tamb = 25 °C). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| 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 |  |  | -50 | V | open emitter; Tamb = 25 °C | 3 |
| collector-emitter voltage | VCEO |  |  | -45 | V | open base; Tamb = 25 °C | 3 |
| emitter-base voltage | VEBO |  |  | -5 | V | open collector; Tamb = 25 °C | 3 |
| collector current | IC |  |  | -500 | mA | Tamb = 25 °C | 3 |
| peak collector current | ICM |  |  | -1 | A | single pulse; tp ≤ 1 ms; Tamb = 25 °C | 3 |
| peak base current | IBM |  |  | -200 | mA | single pulse; tp ≤ 1 ms; Tamb = 25 °C | 3 |
| total power dissipation | Ptot |  |  | 250 | mW | Tamb ≤ 25 °C | 3 |
| total power dissipation (mounting pad for collector 1 cm²) | Ptot |  |  | 345 | mW | Tamb ≤ 25 °C; mounting pad for collector 1 cm² | 3 |
| junction temperature | Tj |  |  | 150 | °C |  | 3 |
| ambient temperature | Tamb | -65 |  | 150 | °C |  | 3 |
| storage temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| thermal resistance from junction to ambient in free air | Rth(j-a) |  |  | 500 | K/W | in free air; FR4 PCB, standard footprint | 4 |
| thermal resistance from junction to ambient (mounting pad for collector 1 cm²) | Rth(j-a) |  |  | 362 | K/W | FR4 PCB, mounting pad for collector 1 cm² | 4 |
| collector-base breakdown voltage | V(BR)CBO | -50 |  |  | V | IC = -100 µA; IE = 0 A; Tamb = 25 °C | 5 |
| collector-emitter breakdown voltage | V(BR)CEO | -45 |  |  | V | IC = -10 mA; IE = 0 A; Tamb = 25 °C | 5 |
| emitter-base breakdown voltage | V(BR)EBO | -5 |  |  | V | IE = -100 µA; IC = 0 A; Tamb = 25 °C | 5 |
| collector-base cut-off current | ICBO |  |  | -100 | nA | VCB = -20 V; IE = 0 A; Tamb = 25 °C | 5 |
| collector-base cut-off current | ICBO |  |  | -5 | µA | VCB = -20 V; IE = 0 A; Tj = 150 °C | 5 |
| emitter-base cut-off current | IEBO |  |  | -100 | nA | VEB = -5 V; IC = 0 A; Tamb = 25 °C | 5 |
| DC current gain (BC807-40) | hFE | 250 |  | 600 |  | VCE = -1 V; IC = -100 mA; Tamb = 25 °C; pulsed; tp ≤ 300 µs; δ ≤ 0.02 | 5 |
| DC current gain | hFE | 40 |  |  |  | VCE = -1 V; IC = -500 mA; Tamb = 25 °C; pulsed; tp ≤ 300 µs; δ ≤ 0.02 | 5 |
| collector-emitter saturation voltage | VCEsat |  |  | -700 | mV | IC = -500 mA; IB = -50 mA; Tamb = 25 °C; pulsed; tp ≤ 300 µs; δ ≤ 0.02 | 5 |
| base-emitter voltage | VBE |  |  | -1.2 | V | VCE = -1 V; IC = -500 mA; Tamb = 25 °C; pulsed; tp ≤ 300 µs; δ ≤ 0.02 | 5 |
| transition frequency | fT | 80 |  |  | MHz | VCE = -5 V; IC = -10 mA; f = 100 MHz; Tamb = 25 °C | 5 |

## CAD (KiCad official)

- Symbol: `BC807-40`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bc807-40-etched.step` / `bc807-40-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bc807-40.step` / `bc807-40.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Nexperia datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586177367404384256) (13 pp, sha256 `adeef92a37906430`, retrieved 2026-09-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/bc807-40-datasheet.pdf)