component

M1820B

Public Made by Adom

by adom

Mysentech Temperature and Humidity Sensor, TO-92S. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs m1820b: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (pad-position, synthesised, bottom-right) · Ray 1mo ago
m1820b-etched.fit.json m1820b: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
m1820b-etched.glb m1820b: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
m1820b-etched.step m1820b: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
m1820b.glb Publish 0.1.0 · Ray 1mo ago
m1820b.kicad_mod Publish 0.1.0 · Ray 1mo ago
m1820b.kicad_sym Publish 0.1.0 · Ray 1mo ago
m1820b.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect and oval pad as a SQUARE EAGLE smd; this carries the real pad shape across (0 -> 0 rounded pads) and stops dropping geometry drawn on KiCad User.N layers. Attributes, connects, pads and the pin-1 marker are gated against decreasing and are unchanged. · Ray 1mo ago
m1820b.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (pad-position, synthesised, bottom-right) · Ray 1mo ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 7d ago
README.md m1820b: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 16d ago

M1820B

Mysentech · Temperature and Humidity Sensor · TO-92S

M1820B from Mysentech, in a TO-92S. 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 GND power_in Ground reference (0 V) for the chip. Connect to the system ground plane.
2 DQ bidirectional 1-Wire single-bus data I/O. Open-drain/tri-state pin: requires an external pull-up resistor (typ 4.7 kΩ, 1-10 kΩ; use 1 kΩ for long cables or multi-drop). VIL ≤ 0.3·VDD, VIH ≥ 0.7·VDD; VOL ≤ 0.4 V at IOL = −3 mA. Bus idle state is high; a hold-low > 480 µs resets all devices on the bus.
3 VDD power_in Positive supply, 1.8-5.5 V (typ 3.3 V; absolute max 6 V). IDD ≈ 0.1 µA idle (single-shot mode), 450 µA peak during conversion, 4.8 µA average at 1 measurement/s. For long cables or multi-drop networks keep VDD ≥ 3.3 V.

Key specifications

Parameter Value
Manufacturer Mysentech
Package TO-92S
Category Sensor
Pins 3

CAD (KiCad official)

  • Symbol: M1820B
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92S (KiCad packages3D, STEP)
  • 3D model files: m1820b-etched.step / m1820b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); m1820b.step / m1820b.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
m1820b.step 27 KB You want the bare part, or you mark your own boards.
m1820b-etched.step 1.2 MB You want the part with M1820B already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 297 faces against 19 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 aeda39d8ec9e0fa0, 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