P25Q16SH-SSH-IT from PUYA, in a SOP-8. 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. Enables the device for SPI transactions; deselects and puts the device in standby when high.
2	SO/SIO1	bidirectional	Serial data output in 1x I/O (Standard/Dual SPI). Acts as bidirectional IO1 in Quad SPI, QPI and DTR modes.
3	WP#/SIO2	bidirectional	Write Protect input, active low, protects status register / locked sectors in Standard/Dual SPI. Serves as bidirectional IO2 in Quad SPI, QPI and DTR modes.
4	GND	power_in	Device ground reference (0 V).
5	SI/SIO0	bidirectional	Serial data input in 1x I/O (Standard/Dual SPI). Acts as bidirectional IO0 in Quad SPI, QPI and DTR modes.
6	SCLK	input	Serial interface clock input. Supports SPI Mode 0 and Mode 3; up to 133 MHz (STR) / 66 MHz (DTR).
7	HOLD#/RESET#/SIO3	bidirectional	Hardware reset (active low) or HOLD pause input in Standard/Dual SPI. Acts as bidirectional IO3 in Quad SPI, QPI and DTR modes. HOLD#/RESET# function selected by configuration register.
8	VCC	power_in	Power supply input, 2.3 V to 3.6 V.

Key specifications

Parameter	Value
Manufacturer	PUYA
Package	SOP-8
Category	Memory
Pins	8

Ordering variants

Same part, different packaging or reel option.

P25Q16SH-SSH-IT
P25Q16SH-SSH-IR
P25Q16SH-SSH-ITSUH-IT
P25Q16SH-SSH-ITSUH-IR
P25Q16SH-SSH-ITTSH-IT
P25Q16SH-SSH-ITTSH-IR
P25Q16SH-SSH-ITUXH-IR
P25Q16SH-SSH-ITNXH-IR
P25Q16SH-SSH-ITWXH-IR

CAD (KiCad official)

Symbol: P25Q16SH-SSH-IT
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`p25q16sh-ssh-it.step`	122 KB	You want the bare part, or you mark your own boards.
`p25q16sh-ssh-it-etched.step`	2.8 MB	You want the part with `P25Q16SH-SSH-IT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 683 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: PUYA datasheet (108 pp, sha256 d102a906a053ebe0, 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