# BC1012

**CBI** · MOSFETs · SOT-23

BC1012 from CBI, 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 | GATE | input | Gate; threshold VGS(th) 0.5 to 1.0 V at ID = 250μA, absolute maximum VGSS ±6 V, ESD protected up to 2kV. |
| 2 | SOURCE | passive | Source terminal; continuous drain current 0.63 A at TA = 25°C and 0.45 A at TA = 85°C. |
| 3 | DRAIN | passive | Drain terminal; drain-source voltage VDSS 20 V, pulsed drain current IDM 6 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | CBI |
| 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 |
|---|---|---|---|---|---|---|---|
| Drain-Source Voltage | VDSS |  |  | 20 | V |  | 1 |
| Gate-Source Voltage | VGSS | -6 |  | 6 | V |  | 1 |
| Continuous Drain Current | ID |  |  | 0.63 | A | Steady State, TA = 25C | 1 |
| Continuous Drain Current | ID |  |  | 0.45 | A | Steady State, TA = 85C | 1 |
| Pulsed Drain Current | IDM |  |  | 6 | A |  | 1 |
| Total Power Dissipation | PD |  |  | 0.28 | W |  | 1 |
| Thermal Resistance, Junction to Ambient | RJA |  |  | 452 | °C/W |  | 1 |
| Operating and Storage Temperature Range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |
| Drain-Source Breakdown Voltage | BVDSS | 20 |  |  | V | VGS = 0V, ID = 250μA | 2 |
| Zero Gate Voltage Drain Current, TJ = 25°C | IDSS |  |  | 100 | nA | VDS = 20V, VGS = 0V | 2 |
| Gate-Source Leakage | IGSS | -1 |  | 1 | A | VGS = ±4.5V, VDS = 0V | 2 |
| Gate Threshold Voltage | VGS(th) | 0.5 |  | 1 | V | VDS = VGS, ID = 250μA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 0.3 | 0.4 | Ω | VGS = 4.5V, ID = 600mA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 0.4 | 0.5 | Ω | VGS = 2.5V, ID = 500mA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 0.5 | 0.7 | Ω | VGS = 1.8V, ID = 350mA | 2 |

## CAD (KiCad official)

- Symbol: `BC1012`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bc1012-etched.step` / `bc1012-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bc1012.step` / `bc1012.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [CBI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590917240911052800) (5 pp, sha256 `498027993e25ce72`, retrieved 2026-10-18, 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/bc1012-datasheet.pdf)