component
DX81C04-C
Public Unreviewedby Ray
WEIKAI EEPROM, SOT23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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README
markdownDX81C04-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 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).