{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY7C1339G-133AXCT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY7C1339G-133AXCT","canonicalUrl":"https://icboms.com/infineon/CY7C1339G-133AXCT","factsUrl":"https://icboms.com/api/mcp/products/CY7C1339G-133AXCT","rawCanonicalId":null},"summary":{"shortDescription":"Cypress CY7C1339G-133AXCT, Synchronous SDR SRAM, 4Mbit (128K x 32), 133 MHz clock frequency, 4 ns access time, Parallel interface, 3.15V ~ 3.6V supply, 100-TQFP (14x20), 0°C ~ 70°C.","salesMarkdown":"## 133 MHz synchronous SRAM — 4 ns access, 32-bit wide The Cypress CY7C1339G-133AXCT is a 4Mbit synchronous SDR SRAM organized as 128K x 32 bits. It clocks at 133 MHz with a 4 ns access time, making it a fit for high-throughput cache, frame buffers, or network packet memory where the processor or ASIC needs a 32-bit wide data bus without byte-lane muxing. The parallel interface and 3.15V to 3.6V supply rail place it in the 3.3V logic family common on late-2000s designs. For a BOM line that still calls out CY7C1339G-133AXCT, the only channel is independent distribution — new-old-stock or surplus inventory. That means the buyer needs to qualify the part for fit and verify traceability before committing the board. No LTB window remains; the supply is whatever stock exists on the spot market. ## 100-TQFP — field-swap reality The package is a 100-TQFP with a 14x20 mm body. That is a fine-pitch QFP — not socket-friendly, not a field-swap part without a hot-air station and a steady hand. The leads are gull-wing, so visual inspection after rework is possible, but the 0.5 mm pitch means bridging risk if the solder paste volume is off. No lab bench needed for the replacement itself, but a reflow oven or hot-air pencil is mandatory.","metaTitle":"Cypress CY7C1339G-133AXCT 4Mbit SRAM, 133 MHz, 4 ns","metaDescription":"Cypress CY7C1339G-133AXCT synchronous SDR SRAM, 4Mbit (128K x 32), 133 MHz clock, 4 ns access.","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":"Tape & Reel (TR)","Technology":"SRAM - Synchronous, SDR","Access Time":"4 ns","Memory Size":"4Mbit","Memory Type":"Volatile","Memory Format":"SRAM","Mounting Type":"Surface Mount","Package / Case":"100-LQFP","Product Status":"Obsolete","Clock Frequency":"133 MHz","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"3.15V ~ 3.6V","Base Product Number":"CY7C1339","Memory Organization":"128K x 32","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"100-TQFP (14x20)","Write Cycle Time - Word, Page":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ccd831ef035e7cc68c5ff7be372e4688.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY7C1339G-133AXCT obsolete?","answer":"Yes, the lifecycle status is Obsolete. Cypress has discontinued production, and no official replacement part number is listed. The only supply channel is surplus or new-old-stock inventory held by independent distributors."},{"question":"What is the replacement for CY7C1339G-133AXCT?","answer":"No official replacement is recorded. For a drop-in pin-compatible substitute, the buyer would need to evaluate other 4Mbit synchronous SDR SRAMs in 100-TQFP with a 133 MHz clock and 32-bit organization — but any candidate must be electrically and footprint-verified against the original design. A board respin to a current-production device is the recommended path for new builds."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY7C1339G-133AXCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY7C1339G-133AXCT 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}}