HX6571KSO from HUAXIN, 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	VDD	power_in	Supply input. Operating range 2.5 V to 26 V (absolute max -28 to 28 V). Bypass with 0.1 uF ceramic to GND; a 100 ohm series resistor is recommended per the reference circuit.
2	OUTPUT	output	Open-drain Hall switch output. Sinks up to 50 mA with Vsat < 400 mV at 20 mA; off-state leakage < 10 uA at Vout = 20 V. Requires external pull-up (1 k to 10 k typical). Latches high/low based on N/S magnetic field polarity.
3	GND	power_in	Ground reference.

Key specifications

Parameter	Value
Manufacturer	HUAXIN
Package	SOT-23
Category	Sensor
Pins	3

Ordering variants

Same part, different packaging or reel option.

HX6571KSO
HX6571KSOKUA

CAD (KiCad official)

Symbol: HX6571KSO
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
`hx6571kso.step`	59 KB	You want the bare part, or you mark your own boards.
`hx6571kso-etched.step`	1.5 MB	You want the part with `HX6571KSO` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 373 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: HUAXIN datasheet (8 pp, sha256 f47bb9b2131abb9d, 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