ZD24C02B-STGMT from Zetta, in a SOT23-5L. 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	I2C serial clock input. Positive-edge clocks data in, negative-edge clocks data out. Schmitt-trigger filtered input for noise suppression. Requires external pull-up to VCC.
2	GND	power_in	Device ground (Vss) reference. Common return for VCC and all logic signals.
3	SDA	bidirectional	I2C bidirectional serial data. Open-drain output; requires external pull-up to VCC. May be wire-ORed with other open-drain/open-collector devices on the bus.
4	VCC	power_in	Positive supply input. Operating range 1.7 V to 5.5 V (400 kHz); 2.5 V to 5.5 V for 1 MHz operation. Minimum operating voltage 1.6 V. Decouple to GND with a 100 nF ceramic capacitor.
5	WP	input	Write-Protect input, active high. When tied to VCC, all write operations to the memory array are inhibited (full 2K array protected). When tied to GND, normal read/write operations are allowed. Internally pulled down to Vss if left floating.

Key specifications

Parameter	Value
Manufacturer	Zetta
Package	SOT23-5L
Category	Memory
Pins	5

Ordering variants

Same part, different packaging or reel option.

ZD24C02B-STGMT
ZD24C02B-STGMB
ZD24C02B-STGMTSSGMT
ZD24C02B-STGMTSSGMB
ZD24C02B-STGMTXGMT
ZD24C02B-STGMTXGMB
ZD24C02B-STGMTPGMT
ZD24C02B-STGMTPGMB
ZD24C02B-STGMTMAGMT
ZD24C02B-STGMTMAGMB
ZD24C02B-STGMTSMGMT
ZD24C02B-STGMTSMGMB

CAD (KiCad official)

Symbol: ZD24C02B-STGMT
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT23-5L (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`zd24c02b-stgmt.step`	85 KB	You want the bare part, or you mark your own boards.
`zd24c02b-stgmt-etched.step`	2.4 MB	You want the part with `ZD24C02B-STGMT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 594 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 (20 pp, sha256 c3e9011314006a61, 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