# HAL248DSO

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

HAL248DSO 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; the electrical characteristics give an operating voltage of 1.8 V to 5.5 V, and the absolute maximum supply voltage is 7 V. |
| 2 | Gnd | power_in | Ground pin (接地引脚). |
| 3 | Out | output | Open-drain output: the transistor is driven low when the magnetic flux exceeds the BOP operate point and goes high (BRP) in the absence of a field, holding its last state during sleep periods. |

## 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 voltage) | VDD | 1.8 | 3 | 5.5 | V |  | 2 |
| 电源电流 (supply current, average) | IDD |  | 3 |  | uA | 平均值 | 2 |
| 输出电流 (output current) | IOUT |  | 1 |  | mA |  | 2 |
| 饱和压降 (saturation voltage) | VSAT |  |  | 0.4 | V | IOUT＝1mA | 2 |
| 唤醒模式时间 (awake mode time) | TAW |  | 50 |  | uS |  | 2 |
| 休眠模式时间 (sleep mode time) | TSL | 40 | 70 |  | mS |  | 2 |
| 电源电压(工作时) (supply voltage, operating) | VDD |  |  | 7 | V |  | 2 |
| 电源电流 (supply current) | IDD |  |  | 7 | mA |  | 2 |
| 输出电压 (output voltage) | VOUT |  |  | 5 | V |  | 2 |
| 输出电流 (output current) | IOUT |  |  | 10 | mA |  | 2 |
| 工作温度范围 (operating temperature range) | TA | -40 |  | 100 | ℃ |  | 2 |
| 储存温度范围 (storage temperature range) | TS | -50 |  | 150 | ℃ |  | 2 |
| 静电击穿电压 (ESD voltage) | VESD |  |  | 2 | KV |  | 2 |

## CAD (KiCad official)

- Symbol: `HAL248DSO`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `hal248dso-etched.step` / `hal248dso-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hal248dso.step` / `hal248dso.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/8603111144378671104) (4 pp, sha256 `ea49ea61fc3c22e8`, 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/hal248dso-datasheet.pdf)