# BDH8401F

**Bardeen Micro** · Hall Switches · SOT-23-3L

BDH8401F from Bardeen Micro, in a SOT-23-3L. 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 | VCC | power_in | Power supply pin; the datasheet gives an operating supply range of 3.8 V to 60 V and an absolute maximum VCC range of -60 V to 80 V, with reverse-supply protection built in. |
| 2 | GND | power_in | Ground pin (地) for the device. |
| 3 | VOUT | output | Open-collector output that requires an external pull-up resistor; the datasheet gives an absolute maximum VOUT of -0.5 V to 80 V and an output current of 0 to 40 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Bardeen Micro |
| Package | SOT-23-3L |
| Category | Magnetic Sensors |
| 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 |
|---|---|---|---|---|---|---|---|
| 电源电压 (VCC) absolute maximum | VCC | -60 |  | 80 | V |  | 2 |
| 输出电压 (VOUT) absolute maximum | VOUT | -0.5 |  | 80 | V |  | 3 |
| 输出电流 (IOUT) absolute maximum | IOUT | 0 |  | 40 | mA |  | 3 |
| 工作温度 (TJ) absolute maximum | TJ | -40 |  | 150 | ˚C |  | 3 |
| 存储温度 (TSTG) absolute maximum | TSTG | -50 |  | 165 | ˚C |  | 3 |
| 电源电压 (VCC) operating range | VCC | 3.8 |  | 60 | V |  | 3 |
| 电源电流 (ISUP) | ISUP | 4.8 |  | 8 | mA |  | 3 |
| 输出漏电流 (Ioleak) | Ioleak |  |  | 10 | uA |  | 3 |
| 输出电压 (Vsat) | Vsat |  |  | 0.4 | V | IOUT=20mA | 3 |
| 输出电流 (IOUT) device rating | IOUT |  |  | 30 | mA |  | 3 |
| 输出上升时间 (Tr) | Tr |  |  | 1 | us | RL=10KΩ，CL=20pF | 3 |
| 输出下降时间 (Tf) | Tf |  |  | 1.5 | us | RL=10KΩ，CL=20pF | 3 |
| 工作点 (Bop) | Bop | 10 | 45 | 80 | Gauss | RL=10KΩ，CL=20pF | 3 |
| 释放点 (Brp) | Brp | -80 | -45 | -10 | Gauss | RL=10KΩ，CL=20pF | 3 |
| 回差 (BHYS) | BHYS |  | 90 |  | Gauss |  | 3 |

## CAD (KiCad official)

- Symbol: `BDH8401F`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `bdh8401f-etched.step` / `bdh8401f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bdh8401f.step` / `bdh8401f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Bardeen Micro datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603163879170195456) (8 pp, sha256 `aec0fc1eadec1245`, retrieved 2026-10-18, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/bdh8401f-datasheet.pdf)