{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1643KV18-400BZC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1643KV18-400BZC","canonicalUrl":"https://icboms.com/infineon/CY7C1643KV18-400BZC","factsUrl":"https://icboms.com/api/mcp/products/CY7C1643KV18-400BZC","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CY7C1643KV18-400BZC, SRAM - Synchronous QDR II+, 144Mbit (8M x 18), 400 MHz, Parallel interface, 1.7V ~ 1.9V supply, 0°C ~ 70°C, 165-FBGA (15x17 mm), Tray.","salesMarkdown":"## QDR II+ SRAM for high-throughput buffer applications The 400 MHz clock rate delivers a peak data rate of 800 MHz DDR per port, making this part suited for high-bandwidth buffer applications in networking switches, routers, and telecom line cards where sustained back-to-back throughput is required. At 400 MHz the QDR II+ interface clocks data on both edges, so the effective data rate per port is 800 MT/s. For a design that chains back-to-back reads and writes — typical in packet buffer memory — the separate read and write ports mean no idle cycles for bus turnaround. The timing closure budget at this speed demands tight PCB layout: matched trace lengths, controlled impedance on the data and address lines, and decoupling within 5 mm of each supply pin. It fits indoor equipment with controlled climate — central-office telecom, data-center switches, test equipment — but not outdoor or under-hood environments. No AEC-Q qualification is listed, so automotive or extended-industrial use would require a different temperature-grade variant. ## Package and PCB integration The 165-FBGA (15x17 mm) package uses a 1.0 mm ball pitch typical of high-density BGA SRAM. Surface-mount assembly requires a solder-paste stencil with aperture sizing matched to the ball diameter; the 165-ball array routes the 18-bit data bus and address lines on inner layers. The Tray shipping medium is standard for BGA devices — no tape-and-reel option is listed in the spec, so pick-and-place feeders need tray-to-tape conversion or a tray handler. For BOM planning this removes the obsolescence risk for new designs.","metaTitle":"CY7C1643KV18-400BZC Infineon 144Mbit QDR II+ SRAM, 400 MHz","metaDescription":"Infineon CY7C1643KV18-400BZC 144Mbit synchronous SRAM, QDR II+, 400 MHz clock, 1.7V-1.9V, 165-FBGA. Request quote.","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":"$286.5660","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/83052c810355ede007da9e962500af42.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1643KV18-400BZC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1643KV18-400BZC 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}}