# MT8311A

**Magn Tek** · Magnetic Sensors · TO-92S

MT8311A from Magn Tek, 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 | Vcc | power_in | Supply pin with an operating range of 3.8V to 60V and -20V reverse-battery protection. |
| 2 | GND | power_in | Ground pin, the reference for the supply and the open-drain output. |
| 3 | OUT | output | Open-drain output rated 65V maximum with 40mA maximum continuous output current and output current limiting. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Magn Tek |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating supply voltage | VCC | 3.8 |  | 60 | V | TA=-40~150 ℃ | 5 |
| Supply current | ICC |  | 4 | 6 | mA | B<BRP | 5 |
| Output saturation voltage | VDSON |  |  | 0.4 | V | IOUT=15mA, B>BOP | 5 |
| Output leakage current | IOFF |  |  | 10 | uA | VOUT=24V, /B/</BRP/ | 5 |
| Output rise time | TR |  |  | 1 | us | RL=1KOhm, CL=20pF | 5 |
| Output fall time | TF |  |  | 1 | us | RL=1KOhm, CL=20pF | 5 |
| Power-on time | TPO |  |  | 10 | us | dVcc/dt>5V/uS, B>BOP(MAX) | 5 |
| Operating point (MT8311 series) | BOP | 110 | 140 | 170 | Gs | TA =25℃ | 5 |
| Release point (MT8311 series) | BRP | 75 | 105 | 135 | Gs | TA =25℃ | 5 |
| Hysteresis (MT8311 series) | BHYST | 20 | 35 | 50 | Gs | TA =25℃ | 5 |
| Supply voltage (reverse battery) | VRCC | -20 |  |  | V |  | 4 |
| Supply voltage | VCC |  |  | 65 | V |  | 4 |
| Output voltage | VOUT |  |  | 65 | V |  | 4 |
| Continuous output current | IOUT |  |  | 40 | mA |  | 4 |
| Operating ambient temperature | TA | -40 |  | 150 | ℃ |  | 4 |
| Storage temperature | TS | -50 |  | 150 | ℃ |  | 4 |
| Junction temperature | TJ |  |  | 165 | ℃ |  | 4 |
| Short-circuit protection current | IOCP |  | 50 |  | mA | B>BOP, VOUT=Vcc | 5 |
| Thermal resistance (TO-92) | RTH |  | 230 |  | ℃/W | TO-92 | 5 |
| Chopping frequency | FC |  | 800 |  | KHz |  | 5 |
| Sampling frequency | FS |  | 200 |  | KHz |  | 5 |

## CAD (KiCad official)

- Symbol: `MT8311A`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92S (KiCad packages3D, STEP)
- 3D model files: `mt8311a-etched.step` / `mt8311a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mt8311a.step` / `mt8311a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Magn Tek datasheet](docs/mt8311a-datasheet.pdf) (14 pp, sha256 `f578939fc3c7edf7`, retrieved 2026-10-27, 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/mt8311a-datasheet.pdf)