KTH1601SL-ST3 from CONNTEK, in a SOT-23-3L. 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	Power supply input. Operating range 1.6 V to 5.5 V (abs max 6 V). A 1 µF ceramic bypass capacitor CIN placed close to this pin is recommended for supply stabilization and noise immunity.
2	OUTPUT	output	Push-pull digital Hall-switch output. Drives low (VOL ≈ 0.05 V @ IOUT=1 mA) when magnetic flux exceeds Bop (turn-on) and high (VOH ≈ VDD-0.05 V) when it falls below Brp (turn-off). Maximum sink/source current 5 mA. No external pull-up resistor required.
3	GND	power_in	Ground reference for the device. Connect to the system ground plane.

Key specifications

Parameter	Value
Manufacturer	CONNTEK
Package	SOT-23-3L
Category	Sensor
Pins	3

Ordering variants

Same part, different packaging or reel option.

KTH1601SL-ST3
KTH1601SL-ST3SF5
KTH1601SL-ST3TO3

CAD (KiCad official)

Symbol: KTH1601SL-ST3
Footprint: Package_TO_SOT_SMD:SOT-23-3
3D model: SOT-23-3L (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`kth1601sl-st3.step`	59 KB	You want the bare part, or you mark your own boards.
`kth1601sl-st3-etched.step`	2.0 MB	You want the part with `KTH1601SL-ST3` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 494 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: CONNTEK datasheet (14 pp, sha256 d2c8ce5c6d689457, 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