MT8315ET 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	Supply voltage input. Operating range 3.8V to 60V (absolute max 65V). Typical supply current 4mA. Reverse-battery protection down to -20V. Decouple with 100nF cap to GND.
2	OUT	output	Open-drain digital output of the Hall switch. Pulls Low when magnetic flux density B > BOP (typ 30Gs); High-Z (High via external pull-up) when B < BRP (typ 20Gs). VDSON = 0.4V max at IOUT=15mA; short-circuit current limit ~50mA; leakage 10uA max at 24V. Recommended external pull-up RL = 1kΩ-10kΩ.
3	GND	power_in	Ground reference for the device.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

MT8315ET
MT8315ETAT
MT8315ETA
MT8315ETA-T
MT8315ETBT

CAD (KiCad official)

Symbol: MT8315ET
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
`mt8315et.step`	59 KB	You want the bare part, or you mark your own boards.
`mt8315et-etched.step`	1.4 MB	You want the part with `MT8315ET` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 352 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 (14 pp, sha256 f578939fc3c7edf7, retrieved 2026-08-17, 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: 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