component
CH912TB
Public Made by Adomby adom
COSEMITECH Magnetic Sensors, TO-92S. 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
markdownCH912TB
COSEMITECH · Magnetic Sensors · TO-92S
CH912TB 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, operating range 1.8V to 5.25V (absolute maximum 6 V), with a 0.1uF external capacitor recommended. |
| 2 | GND | power_in | Ground pin. |
| 3 | OUT | output | Push-pull output pin that goes low when the magnetic field exceeds BOP and high when it falls below BRP, with 1 mA output current capability. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | COSEMITECH |
| Package | TO-92S |
| Category | 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 | 1.8 | 5.25 | V | Operating, TJ < 165°C | 5 | |
| Supply Current awake (CH912) | ICC(awake) | 1.1 | 1.6 | mA | During awake period, TA = 25°C, VCC=3.3V | 5 | |
| Output low voltage (on) | VOL | 0.1 | 0.2 | V | IOUT =1 mA | 5 | |
| Awake time (CH912) | Tawake | 40 | 75 | us | 5 | ||
| Period (CH912) | Tperiod | 50 | 100 | ms | 5 | ||
| Output Leakage Current | IOFF | 1 | μA | VOUT = 5.25V; Switch state = Off | 5 | ||
| Operate point | Bop | 20 | 33 | 75 | Gauss | VDD = 1.8V to 5.25V, TA = 25°C | 5 |
| Release point | Brp | 10 | 23 | 65 | Gauss | VDD = 1.8V to 5.25V, TA = 25°C | 5 |
| Supply Voltage | VDD | 6 | V | 3 | |||
| VDD Reverse Voltage | VRDD | -0.3 | V | 3 | |||
| Supply Current | IDD | 3 | mA | 3 | |||
| Output Voltage | VOUT | -0.3 | V | Max printed as VDD+0.3 | 3 | ||
| Output Current | IOUT | 3 | mA | 3 | |||
| Operating Ambient Temperature | TA | -40 | 150 | °C | 3 | ||
| Storage Temperature | TS | -50 | 150 | °C | 3 | ||
| Junction temperature | TJ | -50 | 165 | °C | 3 | ||
| Supply Current sleep (CH912) | ICC(sleep) | 0.7 | uA | During sleep period, TA = 25°C, VCC=3.3V | 5 | ||
| Average supply current (CH912) | ICC(avg) | 1.09 | uA | TA = 25°C, VDD = 1.8V | 5 | ||
| Average supply current (CH912) | ICC(avg) | 1.62 | uA | TA = 25°C, VDD = 3.3V | 5 | ||
| Duty cycle (CH912) | D.C. | 0.08 | % | 5 | |||
| Chopping Frequency | fC | 500 | kHz | 5 | |||
| Hysteresis | Hys | 10 | Gauss | VDD = 1.8V to 5.25V, TA = 25°C | 5 |
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 | Two package styles provide a magnetically optimized package for most applications, SOT-23 and TO92S. Each package type is lead (Pb) free (suffix, -T), with a 100% matte-tin-plated leadframe. Cosemite | 1 |
CAD (KiCad official)
- Symbol:
CH912TB - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92S (KiCad packages3D, STEP)
- 3D model files:
ch912tb-etched.step/ch912tb-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ch912tb.step/ch912tb.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: COSEMITECH datasheet (9 pp, sha256
3500bb01b04ebb8d, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).