# BML6402

**BORN** · MOSFETs · SOT-23

BML6402 from BORN, 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 | G | input | Gate; the datasheet shows it at the bottom-left of the SOT-23 diagram, with gate-source voltage limited to ±12 V and threshold VGS(th) of -0.4 to -1.2 V. |
| 2 | S | passive | Source of the P-channel MOSFET, shown at the bottom-right of the SOT-23 diagram, with continuous drain current of -3.7 A. |
| 3 | D | passive | Drain, the single pin on the top side of the SOT-23 diagram, with drain-source voltage of -20 V max and pulsed drain current of -15 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BORN |
| 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 | BVDSS |  |  | -20 | V |  | 1 |
| Gate-Source Voltage | VGS |  |  | 12 | V |  | 1 |
| Drain Current (continuous) | ID |  |  | -3.7 | A |  | 1 |
| Drain Current (pulsed) | IDM |  |  | -15 | A |  | 1 |
| Total Device Dissipation | PD |  |  | 1100 | mW | TA=25℃ | 1 |
| Junction Temperature | TJ |  |  | 150 | ℃ |  | 1 |
| Storage Temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Drain-Source Breakdown Voltage | BVDSS | -20 |  |  | V | ID = -250uA,VGS=0V | 1 |
| Gate Threshold Voltage | VGS(th) | -0.4 |  | -1.2 | V | ID = -250uA,VGS= VDS | 1 |
| Diode Forward Voltage Drop | VSD |  |  | -1.2 | V | IS= -1A,VGS=0V | 1 |
| Zero Gate Voltage Drain Current | IDSS |  |  | -1 | uA | VGS=0V, VDS= -20V | 1 |
| Zero Gate Voltage Drain Current | IDSS |  |  | -25 | uA | VGS=0V, VDS= -20V, TA=70℃ | 1 |
| Gate Body Leakage | IGSS |  |  | 100 | nA | VGS=+12V, VDS=0V | 1 |
| Static Drain-Source On-State Resistance | RDS(ON) |  |  | 65 | mΩ | ID= -3.7A,VGS= -4.5V | 1 |
| Static Drain-Source On-State Resistance | RDS(ON) |  |  | 135 | mΩ | ID= -3.1A,VGS= -2.5V | 1 |

## CAD (KiCad official)

- Symbol: `BML6402`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bml6402-etched.step` / `bml6402-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bml6402.step` / `bml6402.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BORN datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586191730215018496) (2 pp, sha256 `4376f34e6852eb80`, retrieved 2026-10-19, 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/bml6402-datasheet.pdf)