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Infineon Technologies FM25W256-G — Memory (DRAM / SRAM / Flash / EEPROM)

FM25W256-G F-RAM 256Kbit SPI 20MHz 8-SOIC, 2.7V-5.5V

MPNFM25W256-G
Active

Cypress F-RAM™ series, FM25W256-G, 256Kbit SPI FRAM, 20 MHz clock, 2.7V–5.5V supply, 8-SOIC package, -40°C to +85°C, ROHS3 compliant.

$8.0900Ref. price · indicative, final on quote
Infineon Technologies FM25W256-G datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
SeriesF-RAM™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

FM25W256-G specifications
ParameterValue
SeriesF-RAM™
Memory typeNon-Volatile
MountingSurface Mount
Supply voltage2.7V ~ 5.5V
Clock frequency20 MHz
Memory interfaceSPI
Operating temperature-40°C ~ 85°C (TA)
PackageTube
TechnologyFRAM (Ferroelectric RAM)
Memory size256Kbit
Memory formatFRAM
Case8-SOIC (0.154\", 3.90mm Width)
Memory organization32K x 8

Product details

Active, ROHS3, no LTB watch needed

The ROHS3 exemption covers the latest EU substance restrictions, which matters for equipment shipped into Europe or following global environmental directives.

Package and mounting — 8-SOIC, surface-mount

Supplied in an 8-SOIC package (0.154" width, 3.90 mm body) on tube. Surface-mount, so it reflows with the rest of the board — no socket needed unless you plan field swaps. The 8-pin SOIC footprint is common; layout matches many serial EEPROMs and FRAMs, so a board designed for a 256Kbit SPI EEPROM can often take this part with a firmware change only.

Frequently asked questions

What is the direct replacement for FM25W256-G?

There is no direct replacement listed because the part is still active. If you need a higher-density sibling, the FM25V20A-G offers 2Mbit at 40 MHz but requires a 2.0V supply minimum. The FM25L04B-DG is a lower-density (4Kbit) alternative with the same 2.7V minimum and 20 MHz SPI.

Does FM25W256-G work with 5V or just 3.3V?

Both. The supply range is 2.7V to 5.5V, so it works on a 3.3V or 5V rail without a level shifter.

Is FM25W256-G RoHS compliant?

Yes, ROHS3 compliant (exemption category ROHS3).