{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C11651KV18-400BZC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C11651KV18-400BZC","canonicalUrl":"https://icboms.com/infineon/CY7C11651KV18-400BZC","factsUrl":"https://icboms.com/api/mcp/products/CY7C11651KV18-400BZC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C11651KV18-400BZC, QDR II+ synchronous SRAM, 18Mbit (512K x 36), 400 MHz clock, parallel interface, 1.7V-1.9V supply, 165-FBGA (13x15), 0°C to 70°C.","salesMarkdown":"It clocks at 400 MHz, delivering back-to-back read and write transactions on separate buses without dead cycles — the defining advantage of QDR (Quad Data Rate) over conventional DDR or NoBL SRAMs. The memory interface is parallel, the supply range is 1.7V to 1.9V, and it comes in a 165-ball FBGA (13x15 mm) for surface-mount assembly. This part is officially marked Obsolete by Cypress (now Infineon). If you are supporting a legacy design that already uses this exact footprint and timing, you will need to source from brokers or excess inventory holders. ## 400 MHz clock — bus margin and throughput At 400 MHz, the QDR II+ interface delivers a peak bandwidth of 28.8 Gbit/s (36-bit data bus × 400 MHz × 2 for DDR on each of the read and write ports). That throughput is the reason to pick this part over a lower-frequency SRAM. The trade-off is tighter timing closure on the PCB — the 400 MHz clock demands controlled impedance, matched trace lengths, and clean supply decoupling. If your system cannot maintain signal integrity at this speed, consider a 250 MHz or 300 MHz QDR II+ variant in the same family. The 165-ball FBGA (13x15 mm) is a fine-pitch BGA requiring a reflow profile typical for lead-free assemblies.","metaTitle":"Cypress CY7C11651KV18-400BZC QDR II+ SRAM, 18Mbit, 400 MHz","metaDescription":"CY7C11651KV18-400BZC is a Cypress 18Mbit QDR II+ synchronous SRAM, 400 MHz clock, 512K x 36, 1.7V-1.9V, 165-FBGA.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Tray","Technology":"SRAM - Synchronous, QDR II+","Memory Size":"18Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"165-LBGA","Product Status":"Obsolete","Clock Frequency":"400 MHz","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"1.7V ~ 1.9V","Base Product Number":"CY7C11651","Memory Organization":"512K x 36","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"165-FBGA (13x15)","Write Cycle Time - Word, Page":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$40.4400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c643d5703f502b3999a261b8e70d0887.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY7C11651KV18-400BZC/alternatives.json"},"ai":{"faq":[{"question":"Where to buy CY7C11651KV18-400BZC?","answer":"Submit an RFQ for current availability and pricing — quotes are confirmed at order time against verified inventory from franchised excess or broker stock."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C11651KV18-400BZC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C11651KV18-400BZC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}