MT9102A from Magn Tek, in a TO-92S. 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, 3.0-5.5 V operating (30 V absolute max). Typical supply current 6.7 mA @ Vcc=5V, 6.0 mA @ Vcc=3.3V. Decouple to GND close to the pin.
2	GND	power_in	Device ground reference. Return path for supply and output loading currents.
3	OUT	output	Ratiometric analog output. Quiescent voltage ≈ Vcc/2 (2.500 V @ Vcc=5V, 1.650 V @ Vcc=3.3V) with no magnetic field; swings 0.3-4.7 V @ Vcc=5V linearly with applied flux. Source/sink capability ±1.5 mA; output resistance ~2 Ω; supports up to 10 nF load capacitance.

Key specifications

Parameter	Value
Manufacturer	Magn Tek
Package	TO-92S
Category	Sensor
Pins	3

Ordering variants

Same part, different packaging or reel option.

MT9102AXA
MT9102XA
MT9102AXET
MT9102XET

CAD (KiCad official)

Symbol: MT9102A
Footprint: Package_TO_SOT_THT:TO-92_Inline
3D model: TO-92S (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`mt9102a.step`	27 KB	You want the bare part, or you mark your own boards.
`mt9102a-etched.step`	1.1 MB	You want the part with `MT9102A` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 272 faces against 19 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 (12 pp, sha256 a002ba99c385ccb1, 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