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CH442SR

Public Made by Adom

by adom

COSEMITECH Hall Sensor, SOT-23-3L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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CH442SR

COSEMITECH · Hall Sensor · SOT-23-3L

CH442SR from COSEMITECH, in a SOT-23-3L. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VDD power_in Supply voltage pin. Operating range 2.5 V to 22 V (absolute max 24 V); typical supply current 1.6 mA at 3.3 V. Integrated regulator and reverse-battery protection down to -22 V.
2 OUT output Open-collector output pin. Sinks up to 25 mA (VDSon <= 0.4 V at 20 mA); output leakage <= 10 uA at VOUT = 24 V. State latches based on magnetic polarity (BOP/BRP) per the CH442 switching function.
3 GND power_in Ground reference pin.

Key specifications

Parameter Value
Manufacturer COSEMITECH
Package SOT-23-3L
Category Sensor
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • CH442SR
  • CH442SRNSR
  • CH442SRTB
  • CH442SRNTB
  • CH442SRER
  • CH442SRNER

CAD (KiCad official)

  • Symbol: CH442SR
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)
  • 3D model files: ch442sr-etched.step / ch442sr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ch442sr.step / ch442sr.glb are the bare package body.

Provenance

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

  • Datasheet: COSEMITECH datasheet (14 pp, sha256 d85c12a1c6a9bd48, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF