FRAM vs EEPROM — the endurance angle
The FM25C160B-G is a 16 Kbit F-RAM (Ferroelectric RAM) from Infineon's F-RAM™ series, organized as 2K x 8 and accessed over an SPI bus at up to 20 MHz. Unlike a serial EEPROM that wears out after roughly a million writes, FRAM endures 10^14 write cycles — the difference between a part that fails after a few years of frequent data-logging and one that outlives the rest of the board.
Supply rail and temperature — what fits
If your system already carries a 5 V rail for sensors or analog front-ends, the FM25C160B-G drops straight in without a regulator.
Housed in an 8-SOIC narrow-body (3.90 mm width) with a 1.27 mm pitch, the footprint matches the industry-standard 25xx-series serial EEPROM layout. The supplier device package is 8-SOIC, and the base product number FM25C160 tells you the die revision — the B-G suffix is the active ordering code.
Active lifecycle — no LTB clock ticking
Infineon lists the FM25C160B-G as Active. For a BOM that already qualified this part, the supply risk is low — it is available through authorized distribution and independent channels alike.