{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STWD100YNXWY3F","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STWD100YNXWY3F","canonicalUrl":"https://icboms.com/stmicroelectronics/STWD100YNXWY3F","factsUrl":"https://icboms.com/api/mcp/products/STWD100YNXWY3F","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics Automotive, AEC-Q100 series, STWD100YNXWY3F, Type Watchdog Circuit, Reset Active Low, Output Open Drain or Open Collector, Reset Timeout 71ms Minimum, Operating Temperature -40°C to 125°C, Package / Case SC-74A SOT-753, Supplier Device Package SOT-23-5.","salesMarkdown":"## Automotive watchdog in a five-pin SOT-23 The STMicroelectronics STWD100YNXWY3F is a single-channel watchdog circuit designed for automotive and industrial systems that need a supervised reset on a microcontroller or SoC. It asserts a reset output (active low, open-drain) when the watchdog input is not toggled within the timeout window, and holds reset for a minimum of 71 ms after the input resumes. The 71 ms minimum reset timeout is the guaranteed period the output stays low after the watchdog condition clears. This gives the monitored device time to complete its internal reset sequence — typically a few milliseconds for a microcontroller's oscillator startup and register initialization — before the watchdog output releases. If the system's power-on reset or brown-out circuit uses a shorter timeout, the watchdog may release before the MCU is ready, causing a spurious early start. The 71 ms floor is generous enough to cover most automotive MCU reset sequences without needing an external delay. The RoHS3 compliance also aligns with current environmental regulations.","metaTitle":"STWD100YNXWY3F Watchdog Circuit, AEC-Q100, SOT-23-5","metaDescription":"STMicroelectronics STWD100YNXWY3F automotive watchdog IC, active-low reset, open-drain output, 71ms min timeout, -40°C to 125°C. AEC-Q100 qualified.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Type":"Watchdog Circuit","Reset":"Active Low","Output":"Open Drain or Open Collector","Series":"Automotive, AEC-Q100","Package":"Tray","Mounting Type":"Surface Mount","Reset Timeout":"71ms Minimum","Package / Case":"SC-74A, SOT-753","lifecycle_stage":"eol_hot","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"SOT-23-5","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.41","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.41000","currency":"USD"},{"qty":10,"price":"$1.26100","currency":"USD"},{"qty":25,"price":"$1.19640","currency":"USD"},{"qty":80,"price":"$0.98288","currency":"USD"},{"qty":230,"price":"$0.91878","currency":"USD"},{"qty":440,"price":"$0.81193","currency":"USD"},{"qty":945,"price":"$0.64099","currency":"USD"},{"qty":3000,"price":"$0.59826","currency":"USD"},{"qty":6000,"price":"$0.56835","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/af0c89d2823f1e5c27969fa122fdb0a9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is STWD100YNXWY3F AEC-Q100 qualified?","answer":"Yes, the STWD100YNXWY3F is part of the Automotive, AEC-Q100 series, meaning it has passed the automotive-grade qualification tests for stress, reliability, and extended temperature operation."},{"question":"What is the reset timeout of STWD100YNXWY3F?","answer":"The reset timeout is a minimum of 71 ms, which is the guaranteed period the reset output stays active low after the watchdog condition clears."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STWD100YNXWY3F","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STWD100YNXWY3F when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:52:16.737Z","lastPublished":"2026-07-16T10:52:16.737Z","indexable":true}}