The S25FL128SAGNFV003: SPI Quad I/O interface at 133 MHz, 128Mbit organized as 16M x 8.
Quad I/O at 133 MHz reads at the bus rate supported by the controller.
Infineon lists the S25FL128SAGNFV003 as Active. For a production BOM that needs a stable NOR Flash through a multi-year product run, this part carries no forced-migration risk today.
Package and mounting — 8-WSON with exposed pad
The exposed pad should be soldered to a PCB thermal land and connected to ground for heat sinking — the datasheet's recommended footprint is the reference to follow.