MT6131AT from Magn Tek, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	VCC	power_in	Power supply input. Operating range 1.65 V to 5.0 V, absolute maximum 7 V. Bypass with 100 nF ceramic capacitor close to the pin.
2	Out	output	Digital switch output. Push-pull driver on MT6131AT: VOH >= 4.6 V at IOUT = 5 mA (VCC = 5 V), VOL <= 0.4 V at IOUT = -5 mA. Output is asserted low when
3	GND	power_in	Device ground reference. Connect to system ground.

Key specifications

Parameter	Value
Manufacturer	Magn Tek
Package	SOT-23
Category	Sensor
Pins	3

Ordering variants

Same part, different packaging or reel option.

MT6131AT

CAD (KiCad official)

Symbol: MT6131AT
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`mt6131at.step`	59 KB	You want the bare part, or you mark your own boards.
`mt6131at-etched.step`	1.2 MB	You want the part with `MT6131AT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 314 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: Magn Tek datasheet (10 pp, sha256 c594e4ffab591d1d, retrieved 2026-08-17, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF