256 Mbit NOR Flash at 133 MHz — the field-swap fit
The S25FL256SAGNFI001 is a 256 Mbit NOR flash from Infineon's FL-S series, organized as 32M x 8 bits and accessed over a SPI Quad I/O interface running at up to 133 MHz. It operates from a 2.7 V to 3.6 V supply and is rated for the industrial temperature range of -40°C to 85°C, so it fits most control boards, drives, and communications modules that see factory-floor or outdoor conditions.
Package and pinout — what fits in the kit
Housed in an 8-WDFN exposed-pad package (supplier device package 8-WSON 6x8 mm), this is a surface-mount part that reflows with standard lead-free profiles — no hot-air station required for a careful hand-solder swap if you have a fine-tip iron and flux. The exposed pad underneath needs a thermal land on the PCB; if the board layout has that pad tied to ground, the part sits flat and the solder joint is inspectable.
Sourcing and lifecycle — active, no LTB clock ticking
Infineon lists this part as Active in production, so there is no last-time-buy deadline for new designs or ongoing production. It is ROHS3 compliant, and the base product number S25FL256 covers the whole FL-S 256 Mbit family — the suffix tells you the package and temperature grade.