MY18B20Z from Mysentech, in a SOP-8. 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	NC	unconnected	No connect. Not internally bonded; leave floating or tie to ground for mechanical support.
2	NC	unconnected	No connect. Not internally bonded; leave floating or tie to ground for mechanical support.
3	VDD	power_in	Supply voltage input, 1.8 V to 5.5 V. Powers the temperature sensor, ADC and digital core; typical standby current 0.2 μA at 5 V, average 5 μA at 1 Hz sampling.
4	DQ	bidirectional	1-Wire bidirectional data pin. Open-drain data I/O for the single-wire bus protocol; requires an external pull-up resistor to VDD (typ. 4.7 kΩ, or 1 kΩ for long-line / multi-drop networks). Carries all ROM commands, function commands, temperature data and alarm search responses.
5	GND	power_in	Ground reference for the supply and 1-Wire signal.
6	NC	unconnected	No connect. Not internally bonded; leave floating or tie to ground for mechanical support.
7	NC	unconnected	No connect. Not internally bonded; leave floating or tie to ground for mechanical support.
8	NC	unconnected	No connect. Not internally bonded; leave floating or tie to ground for mechanical support.

Key specifications

Parameter	Value
Manufacturer	Mysentech
Package	SOP-8
Category	Sensor
Pins	8

Ordering variants

Same part, different packaging or reel option.

MY18B20Z
MY18B20Z-15
MY18B20ZD10
MY18E20
MY18E20-15
MY18E20D10
MY1820
MY1820-15
MY1820D10
MY18B20L
MY18B20L-15
MY18B20LD10

CAD (KiCad official)

Symbol: MY18B20Z
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`my18b20z.step`	122 KB	You want the bare part, or you mark your own boards.
`my18b20z-etched.step`	1.8 MB	You want the part with `MY18B20Z` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 453 faces against 147 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 (28 pp, sha256 47a9f5f3f1da5bbc, 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