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CH444TB

Public Made by Adom

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COSEMITECH Hall Switches, TO-92S. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CH444TB

COSEMITECH · Hall Switches · TO-92S

CH444TB from COSEMITECH, 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 Supply voltage pin, specified for a 2.5 V to 22 V operating range, with an absolute maximum supply voltage of 24 V and a reverse voltage rating of -22 V.
2 GND power_in Ground pin; the device is protected in the event that the VCC pin and the GND pin are reversed, up to -22 V.
3 OUT output Open-collector output pin with an output voltage limit of -0.3 V to 24 V and an absolute maximum output current of 25 mA.

Key specifications

Parameter Value
Manufacturer COSEMITECH
Package TO-92S
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 VCC 2.5 22 V -40 °C to 150 °C 7
Supply Current IDD 1.6 3 mA VDD = 2.5V to 22V 7
Output saturation voltage VDSon 0.4 V at 20mA, Gauss >BOP 7
Output Leakage Current IOFF 10 uA VOUT = 24 V; Switch state = Off 7
Output Current Limit IOUT(lim) 30 90 mA Short-Circuit Protection 7
Output rise time TR 0.2 2 uS RLOAD = 820 Ω, CLOAD = 10 pF 7
Output fall time TF 0.1 2 uS RLOAD = 820Ω, CLOAD = 10 pF 7
Power-On Time tPO 30 μs TA = 25°C; CLOAD = 10 pF 7
Operating temperature T -40 150 °C 7
Storage temperature TS -40 150 °C 7
Magnetic operating point BOP 70 120 180 Gauss TA=-40oC to 150oC 8
Magnetic release point BRP -180 -120 -70 Gauss TA=-40oC to 150oC 8
Magnetic hysteresis window /BOP-BRP/ BHYST 180 240 300 Gauss TA=-40oC to 150oC 8
Magnetic offset; BO = (BOP + BRP) / 2 Bo -30 0 30 Gauss TA=-40oC to 150oC 8
Supply Voltage VDD 24 V 5
VDD Reverse Voltage VRDD -22 V 5
Supply Current IDD 20 mA 5
Output Voltage VOUT -0.3 24 V 5
Output Current IOUT 25 mA 5
Operating Ambient Temperature TA -40 150 °C 5
Storage Temperature TS -55 165 °C 5
Junction temperature TJ -55 165 °C 5
Thermal resistance RTH 203 °C/W TO-92S 7

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin and SOT-89. Each package type is lead (Pb) free (suffix, -T), with a 100% matte-tin-plated lead-frame. Cosemitech CHA44X/CH44X 1

CAD (KiCad official)

  • Symbol: CH444TB
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92S (KiCad packages3D, STEP)
  • 3D model files: ch444tb-etched.step / ch444tb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ch444tb.step / ch444tb.glb are the bare package body.

Provenance

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

  • Datasheet: COSEMITECH datasheet (15 pp, sha256 bb180a03995d8124, retrieved 2026-10-20, tier: lcsc)
  • 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