# MT3303AT-EN

**Magn Tek** · Hall Switches · SOT-23

MT3303AT-EN from Magn Tek, 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 | VS | power_in | Supply voltage pin with an operating range of 2.8 V to 24 V and an absolute maximum of 27 V, referenced to GND. |
| 2 | OUT | output | Open-drain output, with a maximum output voltage of 27 V, a continuous output current limit of 50 mA, and a saturation voltage of 0.4 V max at 20 mA when B > BOP. |
| 3 | GND | power_in | Ground reference pin; all absolute maximum voltages are referenced to this pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Magn Tek |
| 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 | VS |  |  | 27 | V |  | 4 |
| Reverse Battery Voltage | VRCC | -27 |  |  | V |  | 4 |
| Output Voltage | VOUT |  |  | 27 | V |  | 4 |
| Continuous output current | IOUT |  |  | 50 | mA |  | 4 |
| Operating ambient Temperature | TA | -40 |  | 150 | ℃ |  | 4 |
| Storage temperature | TS | -50 |  | 165 | ℃ |  | 4 |
| Junction Temperature | TJ |  |  | 165 | ℃ |  | 4 |
| Supply Voltage | VS | 2.8 |  | 24 | V | Operating | 5 |
| Supply Current | IS |  | 2.3 | 3.5 | mA | B< BRP | 5 |
| Output Saturation Voltage | VDSON |  |  | 0.4 | V | IOUT=20mA, B> BOP | 5 |
| Output Leakage Current | IOL |  |  | 10 | μA | VOUT=24V, B< BRP | 5 |
| Output Rise Time | TR |  |  | 1 | μs | RL=1KOhm,CL=20pF | 5 |
| Output Fall Time | TF |  |  | 1 | μs | RL=1KOhm,CL=20pF | 5 |
| Power On Time | TPO1 |  |  | 25 | μs | dVS/dt>5V/uS, B>BOP(MAX) | 5 |
| Magnetic Operating Point of South Pole | BOPS | 90 | 150 | 190 | Gauss | TA =25℃ | 5 |
| Magnetic Release Point of South Pole | BRPS | 70 | 120 | 160 | Gauss |  | 5 |
| Hysteresis Window of South Pole | BHYSTS | 10 | 30 | 50 | Gauss |  | 5 |
| Magnetic Operating Point of North Pole | BOPN | -190 | -150 | -90 | Gauss | TA =25℃ | 5 |
| Magnetic Release Point of North Pole | BRPN | -160 | -120 | -70 | Gauss |  | 5 |
| Hysteresis Window of North Pole | BHYSTN | -50 | -30 | -10 | Gauss |  | 5 |
| Short Circuit Protection Current | IOCP |  | 50 |  | mA | B>BOP, VOUT=VS | 5 |
| Chopping Frequency | FC |  | 200 |  | KHz |  | 5 |
| SOT-23 Package Thermal Resistance | RTH |  | 301 |  | ℃/W |  | 5 |

## CAD (KiCad official)

- Symbol: `MT3303AT-EN`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mt3303at-en-etched.step` / `mt3303at-en-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mt3303at-en.step` / `mt3303at-en.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Magn Tek datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918112842625024) (9 pp, sha256 `1a082928941a892b`, retrieved 2026-10-18, tier: lcsc)
- **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/mt3303at-en-datasheet.pdf)