ZD24C16A-STGMT from Zetta, in a SOT-23-5L. 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 into the EEPROM; negative edge clocks data out. Schmitt-trigger filtered input. Requires an external pull-up resistor to VCC on the I2C bus.
2	GND	power_in	Ground reference (0 V) for the device.
3	SDA	bidirectional	Serial data (bi-directional). Open-drain output that may be wire-ORed with other open-drain/open-collector devices. Requires an external pull-up resistor to VCC.
4	VCC	power_in	Positive power supply, 1.7 V to 5.5 V (operating voltage option 'M' in the ordering code). Decouple locally to GND.
5	WP	input	Write Protect input. Tie to GND for normal read/write operations; tie to VCC to write-protect the full 16 K array (hardware data protection).

Key specifications

Parameter	Value
Manufacturer	Zetta
Package	SOT-23-5L
Category	Memory
Pins	5

Ordering variants

Same part, different packaging or reel option.

ZD24C16A-STGMT
ZD24C16A-STGMTP
ZD24C16A-STGMTSS
ZD24C16A-STGMTX
ZD24C16A-STGMTMA

CAD (KiCad official)

Symbol: ZD24C16A-STGMT
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5L (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`zd24c16a-stgmt.step`	85 KB	You want the bare part, or you mark your own boards.
`zd24c16a-stgmt-etched.step`	2.2 MB	You want the part with `ZD24C16A-STGMT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 544 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: Zetta datasheet (18 pp, sha256 aa2cf5e1d905b9c3, 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