# MH248EST

**MST Magnesensor Tech MST** · Hall Sensor · TSOT-23-3L

MH248EST from MST Magnesensor Tech MST, in a TSOT-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 | VDD | power_in | Supply voltage input. Operating range 2.5 V to 3.5 V; absolute max 5 V. A 100 Ω series resistor is recommended for reverse-voltage protection since the device has no internal reverse-VDD protection. |
| 2 | OUT | output | Open-drain output. Pulls low when the applied magnetic flux density exceeds the operate point (|BOP| ~ 6-60 Gauss, omnipolar); requires an external pull-up resistor (typ. 100 kΩ). IOUT max 2 mA, VOL <= 0.3 V at 1 mA. |
| 3 | GND | power_in | Ground reference for the device. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MST Magnesensor Tech MST |
| Package | TSOT-23-3L |
| Category | Sensor |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `MH248EST`
- `MH248ESTESO`
- `MH248ESTESO-α`
- `MH248ESTESO-β`
- `MH248ESTESO-γ`
- `MH248ESTESQ`
- `MH248ESTEUA`

## CAD (KiCad official)

- Symbol: `MH248EST`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: TSOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `mh248est-etched.step` / `mh248est-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mh248est.step` / `mh248est.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MST Magnesensor Tech MST datasheet](docs/mh248est-datasheet.pdf) (6 pp, sha256 `00c9d8ef70deb72a`, 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/mh248est-datasheet.pdf)