{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1265V18-400BZC","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1265V18-400BZC","canonicalUrl":"https://icboms.com/infineon/CY7C1265V18-400BZC","factsUrl":"https://icboms.com/api/mcp/products/CY7C1265V18-400BZC","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C1265V18-400BZC, 36 Mbit synchronous QDR II SRAM, 1M×36 organization, 400 MHz clock, 1.7–1.9 V supply, 165-LBGA (Tray), 0°C to 70°C.","salesMarkdown":"It uses a parallel memory interface and is housed in a 165-LBGA surface-mount package. This class of high-speed SRAM is designed for networking equipment, telecom line cards, test-and-measurement instruments, and high-end compute systems where low-latency, high-bandwidth data buffering is critical — think packet buffers, look-up tables, and cache memory in FPGA or ASIC companion roles. The 400 MHz clock rate delivers a peak bandwidth of 3.2 GB/s on a 36-bit bus, which is what makes it suitable for those throughput-hungry applications. The 400 MHz clock is the headline number. For a QDR II architecture, that means two data transfers per clock cycle on both read and write ports, effectively quadrupling the data rate relative to a single-data-rate SRAM at the same clock. In practice, this part sustains back-to-back read-write transactions with no dead cycles, which is exactly what a high-speed data converter or a network processor needs to avoid stalling the pipeline. This is not a part you breadboard; it belongs on a multi-layer board with a solid power plane. If you are designing a new system, avoid this part; if you are supporting an existing build, secure inventory through a trusted independent distributor that can verify date codes and authenticity before shipment. ## Package and temperature — board-level reality If your system sees ambient above 70°C or below freezing, this part is not the right fit.","metaTitle":"CY7C1265V18-400BZC Cypress QDR II SRAM, 36 Mbit, 400 MHz","metaDescription":"Cypress CY7C1265V18-400BZC 36 Mbit synchronous QDR II SRAM, 1M x 36, 400 MHz clock, 1.7-1.9 V, 165-LBGA. Obsolete.","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":"36Mbit","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":"CY7C1265","Memory Organization":"1M x 36","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"165-FBGA (15x17)","Write Cycle Time - Word, Page":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$51.6400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0ebd4ce34fea997a966446ce63110662.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY7C1265V18-400BZC/alternatives.json"},"ai":{"faq":[{"question":"Is CY7C1265V18-400BZC obsolete?","answer":"Yes, the CY7C1265V18-400BZC is listed as Obsolete. Cypress (Infineon) no longer produces this exact variant, and no official replacement order code is documented. Sourcing is through the surplus and broker channel."},{"question":"What is the replacement for CY7C1265V18-400BZC?","answer":"For a pin-compatible alternative, you would need to cross-reference other QDR II SRAMs in the same density and package from Cypress or competitors like Renesas (IDT) or GSI Technology — but no specific part is confirmed as a drop-in substitute here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1265V18-400BZC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1265V18-400BZC 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}}