# JSM422

**JSMSEMI** · Hall Switches · SOT-23

JSM422 from JSMSEMI, in a SOT-23. 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 | VSUP | power_in | Supply pin; the datasheet specifies an operating supply range of 3.8 V to 40 V (VSUP typical test condition 5 V), with reverse-voltage protection on the supply. |
| 2 | GND | power_in | Ground pin for the device. |
| 3 | VOUT | output | Open-collector output that requires an external pull-up resistor; absolute maximum output voltage is 60 V and maximum sink current is 40 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | SOT-23 |
| 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) | VDD | -60 |  | 60 | V |  | 3 |
| Output current (Isink) | Isink | 0 |  | 40 | mA |  | 3 |
| Output voltage (Vout) | Vout | -0.5 |  | 60 | V |  | 3 |
| Operating temperature range (Ta) | Ta | -40 |  | 85 | ℃ |  | 3 |
| Storage temperature range (Ts) | Ts | -50 |  | 165 | ℃ |  | 3 |
| Supply voltage (VSUP) | VSUP | 3.8 |  | 40 | V |  | 3 |
| Operating current (ISUP) | ISUP |  | 6 | 9 | mA | VSUP=5V | 3 |
| Operating point (Bop) | Bop | 15 | 32 | 49 | Gauss | CL=20pF | 4 |
| Release point (Brp) | Brp | 9 | 24 | 39 | Gauss |  | 4 |
| Hysteresis (Bhys) | Bhys | 6 | 8 | 14 | Gauss |  | 4 |

## CAD (KiCad official)

- Symbol: `JSM422`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `jsm422-etched.step` / `jsm422-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `jsm422.step` / `jsm422.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588944347798097920) (8 pp, sha256 `f31839b6b1b905f6`, 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`, 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](docs/jsm422-datasheet.pdf)