component

DX81C04-C

Public Made by Adom

by adom

WEIKAI EEPROM, SOT23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentmemorydx81c04-c
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs dx81c04-c: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers dx81c04-c: viewers · Ray
dx81c04-c-etched.fit.json dx81c04-c: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
dx81c04-c-etched.glb dx81c04-c: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
dx81c04-c-etched.step dx81c04-c: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
dx81c04-c.glb Publish 0.1.0 · Ray
dx81c04-c.kicad_mod Publish 0.1.0 · Ray
dx81c04-c.kicad_sym Publish 0.1.0 · Ray
dx81c04-c.lbr Publish 0.1.0 · Ray
dx81c04-c.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
page.json dx81c04-c: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md dx81c04-c: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

DX81C04-C

WEIKAI · EEPROM · SOT23-5

DX81C04-C from WEIKAI, in a SOT23-5. 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 internal connection. Leave floating or tie to VSS.
2 NC unconnected No internal connection. Leave floating or tie to VSS.
3 NC unconnected No internal connection. Leave floating or tie to VSS.
4 VSS power_in Ground reference for the device. Connect to system ground.
5 SDA bidirectional I2C serial data line (open-drain). Requires an external pull-up resistor (typ. 4.7kΩ per the typical operating circuit). Compatible with 2-wire (24-Series) EEPROM pinout.
6 SCL input I2C serial clock input, up to 1.0 MHz. Requires an external pull-up resistor (typ. 4.7kΩ).
7 NC unconnected No internal connection. Leave floating or tie to VSS.
8 VCC power_in Main supply, 2.0V to 5.5V operating range. Bypass to VSS with a 0.1µF ceramic capacitor as shown in the typical operating circuit.

Key specifications

Parameter Value
Manufacturer WEIKAI
Package SOT23-5
Category Memory
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • DX81C04-C

CAD (KiCad official)

  • Symbol: DX81C04-C
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT23-5 (KiCad packages3D, STEP)
  • 3D model files: dx81c04-c-etched.step / dx81c04-c-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dx81c04-c.step / dx81c04-c.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
dx81c04-c.step 85 KB You want the bare part, or you mark your own boards.
dx81c04-c-etched.step 1.6 MB You want the part with DX81C04-C already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 406 faces against 102 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: WEIKAI datasheet (25 pp, sha256 5396fdb964b053cd, 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