# HAL2481LSO

**Hallwee** · Hall Switches · SOT-23-3L

HAL2481LSO from Hallwee, 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 | VDD | power_in | Supply voltage pin with a working voltage of 2.5 V to 5.5 V (typical 3 V) and an absolute maximum VDD of 6.5 V. |
| 2 | Gnd | power_in | Ground pin for the device. |
| 3 | Out | output | Output pin; the pinout labels it push-pull, while the functional description says the output transistor is open-drain, and the absolute maximum output voltage is listed as 5 V in the ratings table. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Hallwee |
| 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 |
|---|---|---|---|---|---|---|---|
| 工作电压 (operating supply voltage) | VDD | 2.5 | 3 | 5.5 | V | 直流工作参数：TA＝25℃，VDD＝3V | 2 |
| 电源电压(工作时) (supply voltage, operating) | VDD |  |  | 6.5 | V |  | 2 |
| 电源电流 (supply current, average, operating) | IDD |  |  | 20 | uA |  | 2 |
| 工作温度范围 (operating temperature range) | TA | -40 |  | 85 | ℃ |  | 2 |
| 储存温度范围 (storage temperature range) | TS | -50 |  | 150 | ℃ |  | 2 |
| 电源电流 (supply current, average, operating) | IDD |  |  | 3.5 | uA | 工作时平均值 | 2 |
| 饱和压降 (saturation voltage) | VSAT |  |  | 0.4 | V | IOUT＝1mA | 2 |

## CAD (KiCad official)

- Symbol: `HAL2481LSO`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `hal2481lso-etched.step` / `hal2481lso-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hal2481lso.step` / `hal2481lso.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Hallwee datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602997814301908992) (4 pp, sha256 `ec07ef61dce06e7b`, retrieved 2026-10-17, 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/hal2481lso-datasheet.pdf)