MT8315AT 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 3.8 V to 60 V, absolute max 65 V. Reverse polarity protected to -20 V. Recommend 100 nF decoupling capacitor from VCC to GND.
2	OUT	output	Open-drain digital output. Pulled Low when magnetic flux density B exceeds BOP (30 Gs typ); goes High-Z (High via external pull-up) when B falls below BRP (20 Gs typ). Requires external pull-up RL, recommended 1 kΩ to 10 kΩ. VDSON = 0.4 V max at IOUT = 15 mA; IOFF ≤ 10 µA at VOUT = 24 V. Short-circuit protection typ 50 mA.
3	GND	power_in	Ground reference.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

MT8315AT
MT8315ATET
MT8315ATA
MT8315ATA-T
MT8315ATBT

CAD (KiCad official)

Symbol: MT8315AT
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)

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