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Infineon Technologies S25FL128SDSMFN001 — Memory (DRAM / SRAM / Flash / EEPROM)

S25FL128SDSMFN001 128Mbit NOR Flash, SPI Quad I/O, 80 MHz

MPNS25FL128SDSMFN001
Active

Cypress FL-S series, S25FL128SDSMFN001, 128Mbit NOR Flash, SPI - Quad I/O, 80 MHz, 2.7V-3.6V, -40°C to 125°C, 16-SOIC.

$4.5119Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

S25FL128SDSMFN001 specifications
ParameterValue
SeriesFL-S
Memory typeNon-Volatile
MountingSurface Mount
Supply voltage2.7V ~ 3.6V
Clock frequency80 MHz
Memory interfaceSPI - Quad I/O
Operating temperature-40°C~125°C(TA)
PackageTube
TechnologyFLASH - NOR
Memory size128Mbit
Memory formatFLASH
Case16-SOIC (0.295\", 7.50mm Width)
Memory organization16M x 8

Product details

That Quad I/O mode lets you read four data bits per clock cycle, so the effective throughput reaches roughly 320 Mbps — enough to support execute-in-place (XIP) code shadowing for a microcontroller or FPGA configuration store without a separate parallel bus.

Package and footprint — 16-SOIC wide-body

Housed in a 16-pin SOIC with 7.50 mm body width (0.295″), the S25FL128SDSMFN001 uses the standard wide SOIC footprint. The supplier device package is 16-SOIC, and mounting is surface-mount only. No exposed pad — thermal dissipation relies on the package body and PCB copper; for high-duty-cycle writes above 85°C ambient, a few thermal vias under the part help keep junction temperature within the 125°C limit.

Frequently asked questions

Is S25FL128SDSMFN001 obsolete or still active?

The part is listed as active by the manufacturer. No discontinuation notice has been issued, and it remains a current-production device suitable for new designs.

What is the closest pin-compatible alternative to S25FL128SDSMFN001?

Within the same FL-S family, density variants (e.g., 64 Mbit or 256 Mbit) share the same 16-SOIC footprint and Quad SPI interface, so a BOM can scale density without a board spin. For a direct 128 Mbit replacement, parts from the Macronix MX25L or Winbond W25Q series in the same 16-SOIC package are functional equivalents — verify the status register and command set differences in the respective datasheets before substituting.