{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1643KV18-400BZXC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1643KV18-400BZXC","canonicalUrl":"https://icboms.com/infineon/CY7C1643KV18-400BZXC","factsUrl":"https://icboms.com/api/mcp/products/CY7C1643KV18-400BZXC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CY7C1643KV18-400BZXC, 144Mbit Synchronous SRAM, QDR II+, 8M x 18, 400 MHz, Parallel Interface, 1.7V-1.9V, 0°C to 70°C, 165-FBGA (15x17), Tray.","salesMarkdown":"It clocks at 400 MHz on the parallel interface, delivering the high random-access throughput that QDR is known for — two data words per clock cycle on separate read and write ports. This part targets high-bandwidth, low-latency data buffering in networking equipment (switch fabrics, packet processors), test-and-measurement capture buffers, and high-end signal-processing pipelines where the bus must sustain back-to-back transactions without dead cycles. At 400 MHz the QDR II+ interface delivers double-data-rate on each port. ## EOL hot — sourcing reality for this part ## Package and temperature — fit check The 165-ball FBGA measures 15 x 17 mm. It is a surface-mount, tray-shipped device — no tape-and-reel option in the listing.","metaTitle":"Infineon CY7C1643KV18-400BZXC 144Mbit QDR II+ SRAM, 400 MHz","metaDescription":"Infineon CY7C1643KV18-400BZXC synchronous SRAM, 144Mbit, 400 MHz clock, QDR II+, 8M x 18, 165-FBGA, 0-70°C. EOL hot — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Tray","Technology":"SRAM - Synchronous, QDR II+","Memory Size":"144Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"165-LBGA","Product Status":"Active","Clock Frequency":"400 MHz","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"1.7V ~ 1.9V","Base Product Number":"CY7C1643","Memory Organization":"8M x 18","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"165-FBGA (15x17)","Write Cycle Time - Word, Page":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$276.8625","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/83052c810355ede007da9e962500af42.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY7C1643KV18-400BZXC/alternatives.json"},"ai":{"faq":[{"question":"Who supplies CY7C1643KV18-400BZXC and how is it quoted?","answer":"We supply this part through independent distribution and quote it to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock or price figures are published here because the surplus market moves week to week."},{"question":"What is the closest pin-compatible alternative to CY7C1643KV18-400BZXC?","answer":"No official pin-compatible successor is listed for this exact 144 Mbit / 400 MHz / 165-FBGA configuration. If the design can tolerate a different density or speed grade, consult the Infineon QDR II+ family for a cross; otherwise, securing buffer stock from the surplus channel is the realistic path."},{"question":"What is CY7C1643KV18-400BZXC's package?","answer":"It ships in a 165-ball FBGA (15 x 17 mm) on a JEDEC tray. No tape-and-reel option is listed."},{"question":"What is the technology of CY7C1643KV18-400BZXC?","answer":"It is a synchronous SRAM using the QDR II+ architecture — a double-data-rate interface with separate read and write ports for zero bus-turnaround dead cycles."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1643KV18-400BZXC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1643KV18-400BZXC 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}}