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HAL1254SO

Public Made by Adom

by adom

Hallwee Hall Switches, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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HAL1254SO

Hallwee · Hall Switches · SOT-23

HAL1254SO from Hallwee, in a SOT-23. 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 input, operating range 2.0 V to 5.5 V (absolute maximum -0.3 to 6 V), with a 0.1 uF to 1 uF decoupling capacitor to GND.
2 OUT output CMOS output of the Hall switch, sources and sinks up to 0.5 mA, with VOH of at least VDD-0.2 V and VOL of at most 0.2 V at IOUT=0.5 mA.
3 GND power_in Ground reference pin.

Key specifications

Parameter Value
Manufacturer Hallwee
Package SOT-23
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
Supply voltage VDD 2 5.5 V 2
Output low voltage VOL 0.2 V IOUT=0.5mA 2
On-state supply current IDD(EN) 1 2 mA 2
Output source current IOUT(SOURCE) 0.5 mA 2
Output sink current IOUT(SINK) 0.5 mA 2
Start-up time Tawake 24 100 us 2
Operating point BOP 20 30 50 Gauss 25 ℃ 2
Release point BRP 6 21 Gauss 25 ℃ 2
Supply voltage (absolute maximum) VDD -0.3 6 V 2
Operating ambient temperature (absolute maximum) TA -40 150 ℃ 2
Storage ambient temperature Ts -50 160 ℃ 2
ESD (HBM) ESD(HBM) 4000 V 2
Average static current IDD(average) 2.4 uA VOUT pin floating 2
Disabled-state current IDD(dis) 1.4 uA 2
Sampling (scan) period Tperiod 50 ms 2
Hysteresis BHYS 9 Gauss 25 ℃ 2

CAD (KiCad official)

  • Symbol: HAL1254SO
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: hal1254so-etched.step / hal1254so-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hal1254so.step / hal1254so.glb are the bare package body.

Provenance

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

  • Datasheet: Hallwee datasheet (8 pp, sha256 4432d9333e07ebf8, 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, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF