component

GX18B20S

Public Made by Adom

by adom

GXCAS 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 gx18b20s: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d 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
gx18b20s-etched.fit.json gx18b20s: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
gx18b20s-etched.glb gx18b20s: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
gx18b20s-etched.step gx18b20s: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
gx18b20s.glb Publish 0.1.0 · Ray 1mo ago
gx18b20s.kicad_mod Publish 0.1.0 · Ray 1mo ago
gx18b20s.kicad_sym Publish 0.1.0 · Ray 1mo ago
gx18b20s.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
gx18b20s.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 11d ago
README.md gx18b20s: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 17d ago

GX18B20S

GXCAS · Temperature and Humidity Sensor · TO-92S

GX18B20S from GXCAS, 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 for the device. Must be tied to system ground; when the device operates in parasite-power mode the VDD pin must also be tied to GND.
2 DQ bidirectional 1-Wire data input/output. Open-drain bidirectional data line; requires an external ~5 kΩ (typ. shown as 1 kΩ in strong-pullup examples) pull-up to VDD. Also supplies power to the device when used in parasite-power mode (charging the internal CPP capacitor while the bus is high).
3 VDD power_in Optional external supply pin, 2.5 V to 5.5 V. Provides local power to the device; must be grounded when operating in parasite-power mode (device is powered from the DQ line instead).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • GX18B20SS
  • GX18B20SWS
  • GX18B20SA

CAD (KiCad official)

  • Symbol: GX18B20S
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92S (KiCad packages3D, STEP)
  • 3D model files: gx18b20s-etched.step / gx18b20s-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); gx18b20s.step / gx18b20s.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
gx18b20s.step 27 KB You want the bare part, or you mark your own boards.
gx18b20s-etched.step 1.7 MB You want the part with GX18B20S already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 401 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: GXCAS datasheet (33 pp, sha256 5ccf9b30c1910e5c, 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