component

CHI931TB

Public Made by Adom

by adom

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

componentmagnetic sensorschi931tbfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
chi931tb / README.md
History Download
Ray Publish 0.1.0 cd17ff6 11d ago

CHI931TB

COSEMITECH · Hall Switches · TO-92S

CHI931TB 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; the on-board regulator allows operation from 2.5 V to 22 V, with absolute maximum supply voltage of 24 V and reverse voltage limit of -22 V.
2 GND power_in Ground pin; the device is protected when the VDD and GND pins are reversed, up to -22 V.
3 OUT output Open-drain (open-collector) NMOS output that is short-circuit protected and rated to sink up to 25 mA, with output voltage limits of -0.3 V to 24 V and a pull-up resistor R1 greater than 500 Ω required.

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 VDD 2.5 22 V -40 °C to 150 °C 6
Supply current IDD 1.6 3 mA VDD = 3.3V 6
Magnetic operating point (BOP), CHI931 BOP 15 30 55 Gauss TA=-40oC to 150oC; printed as ±15 / ±30 / ±55 6
Magnetic release point (BRP), CHI931 BRP 5 20 45 Gauss TA=-40oC to 150oC; printed as ±5 / ±20 / ±45 6
Magnetic hysteresis window /BOP/-/BRP/, CHI931 BHYST 4 10 30 Gauss TA=-40oC to 150oC 6
Power-on time tPO 30 μs TA = 25°C; CLOAD = 10 pF 6
Output saturation voltage VDSon 0.4 V at 20mA, Gauss >BOP 6
Output leakage current IOFF 10 uA VOUT = 24 V; Switch state = Off 6
Output current limit IOUT(lim) 30 90 mA Short-Circuit Protection 6
Output rise time TR 0.2 2 uS RLOAD = 820 Ω, CLOAD = 10 pF 6
Output fall time TF 0.1 2 uS RLOAD = 820Ω, CLOAD = 10 pF 6
Operating temperature T -40 150 °C 6
Storage temperature TS -40 150 °C 6
Supply voltage VDD 24 V 4
VDD reverse voltage VRDD -22 V 4
Supply current IDD 20 mA 4
Output voltage VOUT -0.3 24 V 4
Output current IOUT 25 mA 4
Operating ambient temperature TA -40 150 °C 4
Storage temperature TS -50 150 °C 4
Junction temperature TJ -50 165 °C 4
Thermal resistance, TO-92S package RTH 203 °C/W 6

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 CHA93X/CHI93X 1

CAD (KiCad official)

  • Symbol: CHI931TB
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92S (KiCad packages3D, STEP)
  • 3D model files: chi931tb-etched.step / chi931tb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); chi931tb.step / chi931tb.glb are the bare package body.

Provenance

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

  • Datasheet: COSEMITECH datasheet (14 pp, sha256 c8fb3ca7240e72e8, retrieved 2026-10-18, 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