# SS443R

**Honeywell** · Hall Switches · TO-92S

SS443R from Honeywell, 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 | VS | power_in | Positive supply; 3 Vdc to 24 Vdc operating for the SS440R over -40 °C to 150 °C, with a -28 V to 28 V absolute maximum. |
| 2 | GND | power_in | Ground reference for the supply and the current-sinking output. |
| 3 | OUT | output | Open-collector current-sinking digital output that sinks up to 20 mA with Vsat 0.4 Vdc max when the field exceeds Bop, and is rated -0.5 V to 28 V applied output voltage. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Honeywell |
| 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 |
|---|---|---|---|---|---|---|---|
| Operate point (SS443R, medium sensitivity) |  | 45 | 135 | 205 | Gauss | Vsupply = 3 Vdc to 24 Vdc, 20 mA load, TA = -40 ºC to 150 ºC | 5 |
| Release point (SS443R, medium sensitivity) |  | 40 | 85 | 180 | Gauss | Vsupply = 3 Vdc to 24 Vdc, 20 mA load, TA = -40 ºC to 150 ºC | 5 |
| Hysteresis (SS443R, medium sensitivity) |  | 5 | 50 | 120 | Gauss | Vsupply = 3 Vdc to 24 Vdc, 20 mA load, TA = -40 ºC to 150 ºC | 5 |
| Supply voltage (SS440R flat TO-92-style) |  | 3 |  | 24 | Vdc | -40 °C to 150 °C [-40 °F to 302 °F] | 5 |
| Output saturation voltage | Vsat |  |  | 0.4 | Vdc | 20 mA, Gauss >Bop | 5 |
| Output leakage current |  |  |  | 10 | µA | Gauss >Bop | 5 |
| Output switching time, rise |  |  |  | 1.5 | µs | Vsupply = 12 V at 25 °C [77 °F], RL = 1.6 kOhm, CL = 20 pF | 5 |
| Output switching time, fall |  |  |  | 1.5 | µs | Vsupply = 12 V at 25 °C [77 °F], RL = 1.6 kOhm, CL = 20 pF | 5 |
| Operating temperature |  | -40 |  | 150 | °C |  | 5 |
| Storage temperature |  | -40 |  | 165 | °C |  | 5 |
| Supply voltage (absolute maximum) |  | -28 |  | 28 | V |  | 5 |
| Applied output voltage (absolute maximum) |  | -0.5 |  | 28 | V |  | 5 |
| Output current (absolute maximum) |  |  |  | 20 | mA |  | 5 |
| Thermal resistance, junction to ambient (SS440R flat TO-92-style) |  |  | 233 |  | °C/W |  | 5 |

## CAD (KiCad official)

- Symbol: `SS443R`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92S (KiCad packages3D, STEP)
- 3D model files: `ss443r-etched.step` / `ss443r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ss443r.step` / `ss443r.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Honeywell datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588892171152347136) (10 pp, sha256 `0d0bded21e5e4b49`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/ss443r-datasheet.pdf)