M1601Z from Mysentech, 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 voltage input. Operating range 1.8V to 5.5V (typical 3.3V); absolute max 6V. Idle current 0.1µA (single-shot mode), measurement peak 450µA, average 4.8µA at 1 sample/s high-repeatability.
2	DQ	bidirectional	1-Wire single-bus digital data I/O (open-drain). Requires ~4.7kΩ external pull-up to VDD (1kΩ recommended for long cables/multi-drop). VIL ≤ 0.3·VDD, VIH ≥ 0.7·VDD, VOL ≤ 0.4V at IOL = -3mA. Bus can chain up to 100 devices over 500m at 5V with 1kΩ pull-up.
3	GND	power_in	Ground reference (0V).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

M1601Z
M1601W
M1601P
M1601ZM601
M1601ZM601Z
M1601ZM601W
M1601ZM601P
M1601ZM1820Z
M1601ZM1820W
M1601ZM1820P

CAD (KiCad official)

Symbol: M1601Z
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
`m1601z.step`	59 KB	You want the bare part, or you mark your own boards.
`m1601z-etched.step`	1.1 MB	You want the part with `M1601Z` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 270 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: Mysentech datasheet (29 pp, sha256 ecdd68f8f5232fc5, 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