# MH180KSO

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

MH180KSO from MST Magnesensor Tech MST, 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 | VDD | power_in | Supply voltage input. Operating range 2.5 V to 24 V (absolute max 28 V). Reverse-bias protected internally; decouple with 10 nF (C1) to GND at the pin. |
| 2 | Out | output | Open-drain DMOS latch output. Pulls low (Vsat < 400 mV at 20 mA) when a south-polarity field exceeds BOP (~45 G) and releases (leakage < 10 uA at 12 V) when a north-polarity field crosses BRP (~-45 G). Requires an external pull-up (typ 1 kOhm) to Vcc; max sink 50 mA. |
| 3 | GND | power_in | Device ground / return. |

## Key specifications

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

## Ordering variants

Same part, different packaging or reel option.

- `MH180KSO`
- `MH180KSOESO`
- `MH180KSOKUA`
- `MH180KSOEUA`

## CAD (KiCad official)

- Symbol: `MH180KSO`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `mh180kso-etched.step` / `mh180kso-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mh180kso.step` / `mh180kso.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MST Magnesensor Tech MST datasheet](docs/mh180kso-datasheet.pdf) (4 pp, sha256 `7295301c34f395b2`, 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/mh180kso-datasheet.pdf)