{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S25FS128SAGMFI100","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"S25FS128SAGMFI100","canonicalUrl":"https://icboms.com/infineon/S25FS128SAGMFI100","factsUrl":"https://icboms.com/api/mcp/products/S25FS128SAGMFI100","rawCanonicalId":null},"summary":{"shortDescription":"Infineon FS-S series, S25FS128SAGMFI100, 128 Mbit NOR Flash, SPI - Quad I/O, QPI, 133 MHz, 1.7 V ~ 2 V supply, 16M x 8 organization, -40°C ~ 85°C, 8-SOIC surface mount.","salesMarkdown":"## 1.8 V NOR Flash — the supply-rail gate The Infineon S25FS128SAGMFI100 is a 128 Mbit NOR Flash from the FS-S series, built for designs that run on a 1.7 V to 2 V supply rail. That supply range is the first thing to check against your board — it is a strict 1.8 V nominal part, not a 2.7 V or 3.3 V device. The 133 MHz clock rate matches the rest of the 128 Mbit FS-S and FL-S family, so if you are migrating from a sibling part at the same density, the speed grade is not a differentiator. ## Sourcing and lifecycle — still a current-production line It is RoHS3 compliant and ships in a tray, though production reels are common through distribution. ## What the 1.8 V supply means for the BOM Because the supply range tops out at 2 V, this part cannot be dropped onto a 2.5 V or 3.3 V bus without a level translator or a separate LDO. The SPI and Quad I/O signals must also stay within the same 1.8 V domain — mixing voltage levels on the bus risks latch-up or incorrect logic thresholds. If your system already has a 1.8 V rail for the core or I/O bank, this Flash fits without extra regulation. If you are running a 2.7 V or 3.3 V NOR elsewhere in the family (like the S25FL128L series), the supply change is the main barrier to a drop-in swap.","metaTitle":"S25FS128SAGMFI100 128 Mbit NOR Flash, SPI/QPI, 133 MHz","metaDescription":"Infineon/Cypress S25FS128SAGMFI100 128 Mbit NOR Flash, 133 MHz SPI/QPI, 1.7–2 V supply, -40°C to 85°C, 8-SOIC. Active lifecycle.","metaKeywords":null},"attributes":{"series":"FS-S","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"FS-S","Package":"Tray","Technology":"FLASH - NOR","Memory Size":"128Mbit","Memory Type":"Non-Volatile","Memory Format":"FLASH","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.209\\\", 5.30mm Width)","Clock Frequency":"133 MHz","lifecycle_stage":"eol_hot","Memory Interface":"SPI - Quad I/O, QPI","Voltage - Supply":"1.7V ~ 2V","Memory Organization":"16M x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-SOIC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.08","priceTiers":[{"qty":1,"price":"$4.08000","currency":"USD"},{"qty":10,"price":"$3.70100","currency":"USD"},{"qty":25,"price":"$3.62080","currency":"USD"},{"qty":40,"price":"$3.60150","currency":"USD"},{"qty":80,"price":"$3.22913","currency":"USD"},{"qty":280,"price":"$3.21732","currency":"USD"},{"qty":560,"price":"$3.09977","currency":"USD"},{"qty":1120,"price":"$2.94694","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d3dacfaf83e491952e2cb1c0f4a64c8b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/S25FS128SAGMFI100/alternatives.json"},"ai":{"faq":[{"question":"Is S25FS128SAGMFI100 still active or obsolete?","answer":"It remains a current-production device suitable for new designs."},{"question":"What is a replacement or equivalent for S25FS128SAGMFI100?","answer":"The closest functional peer is the S25FL128LAGMFA000, which is also a 128 Mbit NOR Flash with 133 MHz SPI/QPI, but it operates at 2.7 V supply and carries AEC-Q100 automotive qualification. The supply voltage difference means they are not pin-compatible without a rail change."},{"question":"Is S25FS128SAGMFI100 compatible with 1.8V logic?","answer":"Yes — the 1.7 V to 2 V supply range is designed for 1.8 V logic families. The SPI bus signals must stay within the same voltage domain."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/S25FS128SAGMFI100","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/S25FS128SAGMFI100 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}