W25Q512JVFIQ from Winbond Elec, in a SOIC-16-300mil. 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	/HOLD or /RESET (IO3)	bidirectional	Hold input in Standard/Dual SPI (active low pauses transactions while /CS is low). Becomes bidirectional IO3 when Quad Enable (QE) bit is set for Quad SPI operation. On ordering suffix -IM this pin functions as /RESET instead of /HOLD.
2	VCC	power_in	Power supply. Single 2.7 V to 3.6 V supply for the device core and I/O.
3	/RESET	input	Dedicated hardware reset input, active low. Driving low for ~1 µs terminates any external or internal operation and returns the device to its power-on state. If unused, leave floating or tie to VCC.
4	NC	unconnected	No Connect / Do Not Use. Leave unconnected.
5	NC	unconnected	No Connect / Do Not Use. Leave unconnected.
6	NC	unconnected	No Connect / Do Not Use. Leave unconnected.
7	/CS	input	SPI Chip Select input, active low. When high the device is deselected and DO/IO0-IO3 are Hi-Z; when low the device is selected for instruction, address, and data transfers. Must track VCC at power-up/down; an external pull-up is recommended.
8	DO (IO1)	bidirectional	Standard SPI unidirectional data output (DO), clocked on the falling edge of CLK. In Dual/Quad SPI modes this pin is bidirectional IO1.
9	/WP (IO2)	bidirectional	Write Protect input, active low; used with the Status Register block-protect and SRP bits to hardware-protect regions of the array. When Quad Enable (QE) bit is set, this pin becomes bidirectional IO2 for Quad SPI operation.
10	GND	power_in	Device ground return.
11	NC	unconnected	No Connect / Do Not Use. Leave unconnected.
12	NC	unconnected	No Connect / Do Not Use. Leave unconnected.
13	NC	unconnected	No Connect / Do Not Use. Leave unconnected.
14	NC	unconnected	No Connect / Do Not Use. Leave unconnected.
15	DI (IO0)	bidirectional	Standard SPI unidirectional data input (DI) latched on the rising edge of CLK. In Dual/Quad SPI modes this pin is bidirectional IO0.
16	CLK	input	SPI Serial Clock input. Provides the timing reference for all serial input/output operations, up to 133 MHz.

Key specifications

Parameter	Value
Manufacturer	Winbond Elec
Package	SOIC-16-300mil
Category	Memory
Pins	16

Ordering variants

Same part, different packaging or reel option.

W25Q512JVFIQ
W25Q512JVFIQFIM
W25Q512JVFIQEIQ
W25Q512JVFIQEIM
W25Q512JVFIQBIQ
W25Q512JVFIQBIM

CAD (KiCad official)

Symbol: W25Q512JVFIQ
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOIC-16-300mil (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`w25q512jvfiq.step`	217 KB	You want the bare part, or you mark your own boards.
`w25q512jvfiq-etched.step`	2.7 MB	You want the part with `W25Q512JVFIQ` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 663 faces against 267 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: Winbond Elec datasheet (94 pp, sha256 16d82bc5b78e5285, 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