# MT8651AT

**Magn Tek** · Hall Sensor · SOT-23-3L

MT8651AT from Magn Tek, in a SOT-23-3L. 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 | VCC | power_in | Supply voltage input. Operating range 2.0V to 5.5V (typ 3.6V). Absolute max 7V; reverse-battery tolerance -0.5V. Bypass with 100nF to GND close to the pin. |
| 2 | OUT | output | Open-drain digital output. Pulls Low (VOL <= 0.4V at IOUT=5mA) when |B| >= |BOP|, and goes High-Z (High via external pull-up) when |B| <= |BRP|. Requires external pull-up resistor to VCC; max continuous IOUT = 8mA, max VOUT = 7V. |
| 3 | GND | power_in | Ground reference for the device. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Magn Tek |
| Package | SOT-23-3L |
| Category | Sensor |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `MT8651AT`
- `MT8651ATA`

## CAD (KiCad official)

- Symbol: `MT8651AT`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `mt8651at-etched.step` / `mt8651at-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mt8651at.step` / `mt8651at.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Magn Tek datasheet](docs/mt8651at-datasheet.pdf) (10 pp, sha256 `a797b4ec675d53c2`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/mt8651at-datasheet.pdf)