{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"M95040-WDW6TP","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"M95040-WDW6TP","canonicalUrl":"https://icboms.com/stmicroelectronics/M95040-WDW6TP","factsUrl":"https://icboms.com/api/mcp/products/M95040-WDW6TP","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics M95040-WDW6TP EEPROM, 4Kbit, SPI, 20 MHz, 2.5-5.5 V, -40 to 85 °C, 8-TSSOP.","salesMarkdown":"## 4Kbit SPI EEPROM in 8-TSSOP The M95040-WDW6TP is a 4Kbit serial EEPROM from STMicroelectronics, organized as 512 x 8 bits and accessed via an SPI bus at up to 20 MHz. The 2.5 V to 5.5 V supply range lets it operate from a 3.3 V or 5 V rail without a separate regulator — the same part number covers both voltage domains in a mixed-supply board. The 5 ms page write time means a full 512-byte array can be rewritten in under 2.6 seconds at the byte level, though a page-buffered write cuts that to 5 ms per 16-byte page. For a data-logging application writing 16-byte records every minute, the write cycle time is negligible — the SPI bus speed is the throughput bottleneck, not the memory array. ## Industrial temperature and supply flexibility Rated for -40°C to 85°C ambient, this is the standard industrial temperature grade. The 2.5 V minimum supply ensures the part stays operational through a 3.3 V rail dipped to 2.7 V under load — a common brownout margin in 24 V fieldbus-powered sensor nodes. The 8-TSSOP package (4.40 mm body width) is a space-efficient footprint for dense PCB layouts. The 0.65 mm pin pitch is standard for this package family, so the land pattern matches existing TSSOP-8 EEPROM footprints without a board respin. ## Active production and compliance The part is supplied in Tape & Reel or Cut Tape options, covering both automated pick-and-place assembly and prototype or low-volume builds. The reel quantity supports high-volume manufacturing without a reel-change penalty.","metaTitle":"STMicro M95040-WDW6TP EEPROM, 4Kbit SPI 20MHz 8-TSSOP","metaDescription":"STMicroelectronics M95040-WDW6TP 4Kbit SPI EEPROM, 20MHz clock, 2.5-5.5V supply, -40 to 85°C, 8-TSSOP. Active, ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Technology":"EEPROM","Memory Size":"4Kbit","Memory Type":"Non-Volatile","Memory Format":"EEPROM","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP (0.173\\\", 4.40mm Width)","Clock Frequency":"20 MHz","lifecycle_stage":"eol_hot","Memory Interface":"SPI","Voltage - Supply":"2.5V ~ 5.5V","Memory Organization":"512 x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-TSSOP","Write Cycle Time - Word, Page":"5ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.35","priceTiers":[{"qty":1,"price":"$0.35000","currency":"USD"},{"qty":10,"price":"$0.34100","currency":"USD"},{"qty":25,"price":"$0.31680","currency":"USD"},{"qty":50,"price":"$0.31500","currency":"USD"},{"qty":100,"price":"$0.27970","currency":"USD"},{"qty":250,"price":"$0.27616","currency":"USD"},{"qty":500,"price":"$0.27200","currency":"USD"},{"qty":1000,"price":"$0.26473","currency":"USD"},{"qty":4000,"price":"$0.24324","currency":"USD"},{"qty":8000,"price":"$0.23798","currency":"USD"},{"qty":12000,"price":"$0.23380","currency":"USD"},{"qty":28000,"price":"$0.22824","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c39b33a956c3a74f155fa4db4afb3b11.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/M95040-WDW6TP/alternatives.json"},"ai":{"faq":[{"question":"Will M95040-WDW6TP drop into a board designed for M95040-DRMN8TP/K without rewiring?","answer":"No. The M95040-DRMN8TP/K is an automotive-grade (AEC-Q100) variant in a different package (8-SOIC) with a 1.8 V supply. The M95040-WDW6TP is an 8-TSSOP package running on 2.5-5.5 V — the pinout differs and the supply voltage is incompatible. A board spin or adapter is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/M95040-WDW6TP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/M95040-WDW6TP 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}}