GD25Q128ESIGR from GigaDevice Semicon Beijing, in a SOP-8-208mil. 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	CS#	input	Chip Select input (active low). Must be driven high when chip is not selected; do not leave floating after power-on. Enables/disables the device for SPI communication.
2	SO/IO1	bidirectional	Serial Data Output in standard SPI mode. Becomes bidirectional Data I/O1 when using Dual or Quad SPI commands.
3	WP#/IO2	bidirectional	Write Protect input (active low) in standard/Dual SPI modes; protects Block Protect (BP4-BP0) and SRP status register bits when driven low. Becomes bidirectional Data I/O2 in Quad SPI modes (requires QE=1 in status register).
4	VSS	power_in	Ground reference (0 V) for all supplies and signals.
5	SI/IO0	bidirectional	Serial Data Input in standard SPI mode. Becomes bidirectional Data I/O0 when using Dual or Quad SPI commands.
6	SCLK	input	Serial Clock input. Provides the timing reference for all serial input/output operations. Supports up to 133MHz.
7	HOLD#/RESET#/IO3	bidirectional	Multifunction pin acting as HOLD# (when HOLD/RST status bit = 0) or hardware RESET# (when HOLD/RST = 1) in standard/Dual SPI. Becomes bidirectional Data I/O3 in Quad SPI (when QE=1). RESET# requires low pulse ≥ tRLRH (1µs) to reset the flash.
8	VCC	power_in	Main power supply. Operating range 2.7 V to 3.6 V. Bypass with a decoupling capacitor to VSS.

Key specifications

Parameter	Value
Manufacturer	GigaDevice Semicon Beijing
Package	SOP-8-208mil
Category	Memory
Pins	8

Ordering variants

Same part, different packaging or reel option.

GD25Q128ESIGR
GD25Q128ESIGRSJG
GD25Q128ESIGRSEG
GD25Q128ESIGRFIG
GD25Q128ESIGRFIR
GD25Q128ESIGRQIG
GD25Q128ESIGRWIG
GD25Q128ESIGRYIG
GD25Q128ESIGRZIG
GD25Q128ESIGRZIR
GD25Q128ESIGRBIG
GD25Q128ESIGRBIR

CAD (KiCad official)

Symbol: GD25Q128ESIGR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8-208mil (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`gd25q128esigr.step`	122 KB	You want the bare part, or you mark your own boards.
`gd25q128esigr-etched.step`	2.9 MB	You want the part with `GD25Q128ESIGR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 697 faces against 147 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: GigaDevice Semicon Beijing datasheet (63 pp, sha256 54cb85133a09da0c, 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