component
KTH1721SH-ST3
Public Made by Adomby adom
CONNTEK Hall Switches, 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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README
markdownKTH1721SH-ST3
CONNTEK · Hall Switches · SOT-23-3L
KTH1721SH-ST3 from CONNTEK, 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 input, operating range 1.8 V to 5.5 V; a 1 μF capacitor between VDD and GND placed as close to the pin as possible is recommended to filter supply noise. |
| 2 | OUTPUT | output | CMOS push-pull output that goes low when the applied north-pole field exceeds BOP and stays low until the field drops below BRP, then goes high. |
| 3 | GND | power_in | Ground connection. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | CONNTEK |
| 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 (recommended operating) | VDD | 1.8 | 5.5 | V | 芯片工作 | 5 | |
| Supply voltage (absolute maximum) | VDD | 6 | V | 5 | |||
| Reverse supply voltage | VDD_REV | -0.3 | V | 5 | |||
| Output drive current | IOUTPUT | 5 | mA | 5 | |||
| Storage temperature range | TSTG | -50 | 150 | oC | 5 | ||
| Maximum junction temperature | TJ | 150 | oC | 5 | |||
| ESD HBM capability | ESD HBM | 8000 | V | HBM 人体模型 | 5 | ||
| Operating temperature range | TA | -40 | 125 | oC | 芯片工作 | 5 | |
| Output low voltage (S series, 25Hz) | VOL | 0.05 | 0.15 | V | IOUT=1mA | 6 | |
| Supply voltage (S series, 25Hz) | VDD | 1.8 | 5.5 | V | 工作状态 | 6 | |
| Magnetic operating point BOPN (H series) | BOPN | -60 | -50 | -40 | Gauss | TA=+25℃， VDD=1.8V | 7 |
| Magnetic release point BRPN (H series) | BRPN | -45 | -35 | -25 | Gauss | TA=+25℃， VDD=1.8V | 7 |
| Average supply current (S series, 25Hz) | IDD(AVG) | 0.9 | μA | TA=+25℃， VDD=1.8V | 6 | ||
| Awake state supply current (S series, 25Hz) | IDD(Awake) | 2 | mA | TA=+25℃， VDD=1.8V | 6 | ||
| Sleep state supply current (S series, 25Hz) | IDD(Sleep) | 0.4 | μA | TA=+25℃， VDD=1.8V | 6 | ||
| Wake-up time (S series, 25Hz) | TAWAKE | 10 | μs | 工作状态 | 6 | ||
| Period (S series, 25Hz) | TPERIOD | 40 | ms | 工作状态 | 6 | ||
| Hysteresis /BOPN/-/BRPN/ (H series) | BHY | 15 | Gauss | 7 |
CAD (KiCad official)
- Symbol:
KTH1721SH-ST3 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files:
kth1721sh-st3-etched.step/kth1721sh-st3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);kth1721sh-st3.step/kth1721sh-st3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: CONNTEK datasheet (11 pp, sha256
f5b8e2504d167edf, retrieved 2026-10-18, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).