# A1324LLHLX-T

**Allegro MicroSystems LLC** · Hall Sensor · SOT-23W

A1324LLHLX-T from Allegro MicroSystems LLC, in a SOT-23W. 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 4.5 V to 5.5 V (nominal 5 V). Bypass to GND with a 0.1 uF ceramic capacitor placed close to the pin. |
| 2 | VOUT | output | Analog ratiometric output voltage. Quiescent output is nominally VCC/2 with zero applied field; output changes with magnetic flux density at a nominal sensitivity of 5 mV/G. Drives loads with output impedance suitable for high-impedance sensing. |
| 3 | GND | power_in | Ground reference for supply and output. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Allegro MicroSystems LLC |
| Package | SOT-23W |
| Category | Sensor |
| Pins | 3 |

## Ordering variants

- `A1324LLHLX-T`

## CAD (KiCad official)

- Symbol: `A1324LLHLX-T`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23W (KiCad packages3D, STEP)
- 3D model files: `a1324llhlx-t-etched.step` / `a1324llhlx-t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `a1324llhlx-t.step` / `a1324llhlx-t.glb` are the bare package body.

## 3D model downloads

Two STEP files. Same geometry, different body top:

| File | Size | Use it when |
|---|---|---|
| [`a1324llhlx-t.step`](a1324llhlx-t.step) | 59 KB | You want the bare part, or you mark your own boards. |
| [`a1324llhlx-t-etched.step`](a1324llhlx-t-etched.step) | 1.4 MB | You want the part with `A1324LLHLX-T` already on it. |

The marking in the etched file is real recessed geometry cut into the solid, not a
texture or a decal: 370 faces against 69 in the bare model. It
survives export, section views, and rendering in any CAD tool, and it drops straight
into KiCad or Fusion with no extra setup.

## Provenance

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

- **Datasheet:** [Allegro MicroSystems LLC datasheet](docs/a1324llhlx-t-datasheet.pdf) (12 pp, sha256 `0c4fe174d39a19dc`, 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/a1324llhlx-t-datasheet.pdf)