AT24C08M5 from HGSEMI, in a SOT-23-5. 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	SCL	input	Serial clock input. Positive-edge clocks data in; negative-edge clocks data out. Schmitt-trigger, filtered input. Requires external pull-up to VCC (typ 1.3 k / 10 k depending on VCC).
2	Vss	power_in	Ground reference for VCC supply.
3	SDA	bidirectional	Serial data I/O. Open-drain output; wire-OR compatible with other open-drain/open-collector devices. Requires external pull-up to VCC.
4	VCC	power_in	Supply voltage input. Operating range 1.7 V to 5.5 V. Absolute maximum 6.5 V.
5	WCB	input	Write Control, active-low enable. Tie to VSS (or leave floating; internally pulled down) to allow writes. Tie to VCC to inhibit all writes to the memory array (hardware write-protect).

Key specifications

Parameter	Value
Manufacturer	HGSEMI
Package	SOT-23-5
Category	Memory
Pins	5

Ordering variants

AT24C08M5/TR
AT24C08M5N
AT24C08M5M/TR
AT24C08M5MT/TR
AT24C08M5MM/TR
AT24C08M5DQ3/TR
AT24C08M5DQ2/TR

CAD (KiCad official)

Symbol: AT24C08M5
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`at24c08m5.step`	85 KB	You want the bare part, or you mark your own boards.
`at24c08m5-etched.step`	1.8 MB	You want the part with `AT24C08M5` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 447 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: HGSEMI datasheet (21 pp, sha256 3e86ae75d43fb087, 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