component
CH441PSR
Public Made by Adomby adom
COSEMITECH Linear Hall Sensors, SOT-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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Contents
README
markdownCH441PSR
COSEMITECH · Linear Hall Sensors · SOT-23-3L
CH441PSR from COSEMITECH, in a SOT-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: the on-board regulator accepts 2.5 V to 22 V, with a supply voltage absolute maximum of 24 V and a reverse voltage limit of -22 V. |
| 2 | OUT | output | Open-drain NMOS output with an internal 10 kΩ pull-up resistor, short-circuit protected and rated to sink up to 25 mA, with an output voltage absolute range of -0.3 V to 24 V. |
| 3 | GND | power_in | Ground pin; the device is protected when the VDD and GND pins are reversed, up to -22 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | COSEMITECH |
| Package | SOT-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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | VDD | 2.5 | 22 | V | -40 °C to 150 °C | 7 | |
| Supply current | IDD | 1.6 | 3 | mA | VDD = 3.3V | 7 | |
| Power-on time | tPO | 30 | μs | TA = 25°C; CLOAD = 10 pF | 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 | |
| Magnetic operating point (CH441P, BOP) | BOP | 6 | 15 | 36 | Gauss | TA=-40oC to 150oC | 7 |
| Magnetic release point (CH441P, BRP) | BRP | -36 | -15 | -6 | Gauss | TA=-40oC to 150oC | 7 |
| Magnetic hysteresis window (CH441P) | BHYST | 12 | 30 | 50 | Gauss | /BOP-BRP/; TA=-40oC to 150oC | 7 |
| Magnetic offset (CH441P) | Bo | -15 | 0 | 15 | Gauss | BO = (BOP + BRP) / 2; TA=-40oC to 150oC | 7 |
| Operating temperature | T | -40 | 150 | °C | 7 | ||
| Storage temperature (electrical table) | TS | -40 | 150 | °C | 7 | ||
| 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 (absolute maximum) | TS | -50 | 150 | °C | 5 | ||
| Junction temperature | TJ | -50 | 165 | °C | 5 | ||
| Thermal resistance, junction to ambient | RTH | 303 | °C/W | SOT-23-3L package | 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 CHA44XP/CH44XP | 1 |
CAD (KiCad official)
- Symbol:
CH441PSR - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files:
ch441psr-etched.step/ch441psr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ch441psr.step/ch441psr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: COSEMITECH datasheet (15 pp, sha256
b004d9853b04520c, retrieved 2026-10-18, tier: lcsc) - 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).