component
HAL251ST
Public Made by Adomby adom
Hallwee Hall Switches, TSOT-23-3L. 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
markdownHAL251ST
Hallwee · Hall Switches · TSOT-23-3L
HAL251ST from Hallwee, in a TSOT-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 (电源电压引脚); the datasheet gives an operating supply of 1.65 V to 5.5 V and an absolute maximum VDD of 6 V. |
| 2 | GND | power_in | Ground pin (接地引脚) for the device. |
| 3 | OUT | output | Push-pull output pin (推挽式输出引脚); the absolute maximum output voltage is 5 V and the absolute maximum output current is 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Hallwee |
| Package | TSOT-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 |
|---|---|---|---|---|---|---|---|
| Working voltage (VDD) | VDD | 1.65 | 3 | 5.5 | V | 2 | |
| Supply current, average (operating) | IDD | 5 | uA | 工作时 平均值 (operating, average) | 2 | ||
| Output current | IOUT | 3 | mA | 2 | |||
| Saturation voltage | VSAT | 0.4 | V | IOUT=1mA | 2 | ||
| Awake mode time | TAW | 80 | uS | VDD=2.75V, internal clock diagram (page 3) | 3 | ||
| Sleep mode time | TSL | 80 | mS | VDD=2.75V, internal clock diagram (page 3) | 3 | ||
| Operating point | BOP | 30 | 55 | GS | TA=25℃, VDD=3V | 3 | |
| Release point | BRP | 10 | 20 | GS | TA=25℃, VDD=3V | 3 | |
| Hysteresis | BHYS | 10 | GS | TA=25℃, VDD=3V | 3 | ||
| Supply voltage (operating) | VDD | 6 | V | 2 | |||
| Supply current | IDD | 7 | mA | 2 | |||
| Output voltage | VOUT | 5 | V | 2 | |||
| Output current | IOUT | 10 | mA | 2 | |||
| Operating temperature range | TA | -40 | 85 | ℃ | 2 | ||
| Storage temperature range | TS | -65 | 150 | ℃ | 2 | ||
| ESD withstand voltage | VESD | 4 | KV | 2 |
CAD (KiCad official)
- Symbol:
HAL251ST - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: TSOT-23-3L (KiCad packages3D, STEP)
- 3D model files:
hal251st-etched.step/hal251st-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);hal251st.step/hal251st.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Hallwee datasheet (4 pp, sha256
c2a4502611d74559, retrieved 2026-10-19, 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-haiku-5-5(text), consensusclaude-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).