component
HAL251UA
Public Made by Adomby adom
Hallwee Hall Switches, TO-92S. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownHAL251UA
Hallwee · Hall Switches · TO-92S
HAL251UA from Hallwee, in a TO-92S. 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 | Power supply pin; operating Vcc range is 1.65 V to 5.5 V (absolute maximum -0.5 to 6.0 V), with a 0.1 µF bypass capacitor to Gnd in the typical application. |
| 2 | GND | power_in | Ground pin. |
| 3 | OUT | output | Push-pull output pin; output current max 5.0 mA operating (10 mA absolute maximum), VOUT max 5.5 V, saturation drop max 0.4 V at IOUT=2 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Hallwee |
| Package | TO-92S |
| Category | Magnetic Sensors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
HAL251UA - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92S (KiCad packages3D, STEP)
- 3D model files:
hal251ua-etched.step/hal251ua-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);hal251ua.step/hal251ua.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Hallwee datasheet (6 pp, sha256
46060496a9a5588f, retrieved 2026-10-18, 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).