{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FM25040B-G","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"FM25040B-G","canonicalUrl":"https://icboms.com/infineon/FM25040B-G","factsUrl":"https://icboms.com/api/mcp/products/FM25040B-G","rawCanonicalId":null},"summary":{"shortDescription":"Cypress F-RAM™ FM25040B-G, 4Kbit (512 x 8) non-volatile FRAM, SPI interface, 20 MHz clock, 4.5V–5.5V supply, -40°C to 85°C, 8-SOIC package.","salesMarkdown":"## 4Kbit FRAM with SPI — what it replaces and where it fits The Cypress FM25040B-G is a 4Kbit ferroelectric RAM (FRAM) in an 8-SOIC package, communicating over an SPI bus at up to 20 MHz. ## Lifecycle and supply — active, no LTB risk The ROHS3 compliance covers the EU RoHS exemption list.","metaTitle":"Cypress FM25040B-G F-RAM 4Kbit SPI 20MHz 8-SOIC","metaDescription":"Cypress FM25040B-G 4Kbit FRAM, SPI 20MHz, 4.5-5.5V, -40°C to 85°C, 8-SOIC. Active lifecycle, no write-delay. Sourced to order, RFQ for current pricing.","metaKeywords":null},"attributes":{"series":"F-RAM™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Mfr":"Infineon Technologies","Series":"F-RAM™","Package":"Tube","Technology":"FRAM (Ferroelectric RAM)","Memory Size":"4Kbit","Memory Type":"Non-Volatile","Memory Format":"FRAM","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","Clock Frequency":"20 MHz","lifecycle_stage":"eol_hot","Memory Interface":"SPI","Voltage - Supply":"4.5V ~ 5.5V","Base Product Number":"FM25040","Memory Organization":"512 x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-SOIC","Write Cycle Time - Word, Page":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0100","priceTiers":[{"qty":1,"price":"$2.01000","currency":"USD"},{"qty":10,"price":"$1.83500","currency":"USD"},{"qty":25,"price":"$1.78480","currency":"USD"},{"qty":50,"price":"$1.77580","currency":"USD"},{"qty":100,"price":"$1.58730","currency":"USD"},{"qty":250,"price":"$1.58268","currency":"USD"},{"qty":500,"price":"$1.55880","currency":"USD"},{"qty":1000,"price":"$1.49262","currency":"USD"},{"qty":5000,"price":"$1.38968","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a2d20322b81029c6c6a674bbe44a80d4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/FM25040B-G/alternatives.json"},"ai":{"faq":[{"question":"How does FM25040B-G compare to standard EEPROM?","answer":"FRAM writes at SPI bus speed with no write-cycle delay and offers endurance of 10¹⁴ cycles — orders of magnitude higher than EEPROM's typical 1 million cycles. No page-buffer management or wear-leveling is needed."},{"question":"What are the alternatives or equivalents to FM25040B-G?","answer":"The Tape & Reel variant is FM25040B-GTR. For a 3.3V supply, the FM25L04B-DG is pin-compatible. For higher density, the FM25640B-G offers 64Kbit in the same 8-SOIC package and 4.5V–5.5V supply."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/FM25040B-G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/FM25040B-G 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}}