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Infineon Technologies S25FS128SAGNFI003 — Memory (DRAM / SRAM / Flash / EEPROM)

S25FS128SAGNFI003 128 Mbit SPI NOR Flash, 133 MHz, 1.7 V

MPNS25FS128SAGNFI003
Active

Cypress FS-S series S25FS128SAGNFI003, 128 Mbit SPI NOR Flash, 133 MHz, Quad I/O and QPI interface, 1.7 V supply, 8-WSON package, -40°C to 85°C.

$2.03Ref. price · indicative, final on quote
Infineon Technologies S25FS128SAGNFI003 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

S25FS128SAGNFI003 specifications
ParameterValue
SeriesFS-S
InterfaceSPI - Quad I/O, QPI
MountingSurface Mount
Operating temperature high-40°C to 85°C (TA)
Frame_size128Mbit
Memory typeNon-Volatile
Frequency133000000.0
Package_typeTape & Reel (TR)
Memory formatFLASH
StatusActive
Supply voltage1.7
Memory organization16M x 8

Product details

128 Mbit SPI NOR Flash with Quad I/O at 1.7 V

The Cypress S25FS128SAGNFI003 is a 128 Mbit (16M x 8) SPI NOR Flash memory from the FS-S series, supporting both Quad I/O and QPI interfaces at a clock rate of 133 MHz.

133 MHz read throughput and interface flexibility

The QPI mode reduces command overhead by using the SPI bus for both address and data, which improves random-read efficiency. For a firmware-bringup engineer, the first-power checklist includes verifying the SPI mode (Mode 0 or Mode 3) matches the host controller and that the 1.7 V supply is within tolerance before enabling quad reads.

For a BOM cost engineer, this avoids single-source risk flags and LTB surcharges.

Frequently asked questions

Can S25FS128SAGNFI003 be used as a replacement for S25FS128SAGNFI001?

The S25FS128SAGNFI003 and S25FS128SAGNFI001 share the same die and package; the suffix difference typically indicates packaging or shipping medium. Verify the specific suffix meaning in the datasheet, but functionally they are the same 128 Mbit SPI NOR Flash device.