{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM809SWX6F","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM809SWX6F","canonicalUrl":"https://icboms.com/stmicroelectronics/STM809SWX6F","factsUrl":"https://icboms.com/api/mcp/products/STM809SWX6F","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM809SWX6F Simple Reset/Power-On Reset supervisor IC, 2.93V threshold, active-low push-pull output, 140ms minimum timeout, SOT-23-3 package, -40°C to 85°C, ROHS3 compliant.","salesMarkdown":"## What the 2.93V threshold and active-low reset mean for your rail The STM809SWX6F: That 140 ms minimum timeout gives downstream logic—MCUs, FPGAs, or SoCs—time to complete an orderly power-down or hold in reset until the supply is stable. The push-pull, totem-pole output drives the reset line high or low without needing an external pull-up resistor. Active-low reset is the standard polarity for most ARM Cortex-M and other microcontroller families—a direct connection to the /RST pin, no inversion stage needed. The threshold accuracy over temperature is tight enough to guard against brownout conditions in 3.3 V and 3.0 V systems without false resets from normal ripple. ## Package and board-fit for the SOT-23-3 footprint Housed in the industry-standard SOT-23-3 (TO-236, SC-59) package, the STM809SWX6F occupies minimal PCB area—roughly 2.9 mm × 1.3 mm—and is compatible with the same footprint used by competitors' reset ICs. The three pins are supply, ground, and reset output; no external components are required beyond the decoupling cap at the VDD pin.","metaTitle":"STM809SWX6F Simple Reset/Power-On Reset, 2.93V, Active Low","metaDescription":"STMicroelectronics STM809SWX6F supervisor IC, active-low push-pull reset, 2.93V threshold, 140ms timeout, -40°C to 85°C, SOT-23-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Type":"Simple Reset/Power-On Reset","Reset":"Active Low","Output":"Push-Pull, Totem Pole","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Reset Timeout":"140ms Minimum","Package / Case":"TO-236-3, SC-59, SOT-23-3","lifecycle_stage":"eol_hot","Voltage - Threshold":"2.93V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"SOT-23-3","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.62","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.62000","currency":"USD"},{"qty":10,"price":"$0.54900","currency":"USD"},{"qty":25,"price":"$0.51520","currency":"USD"},{"qty":100,"price":"$0.42060","currency":"USD"},{"qty":250,"price":"$0.39068","currency":"USD"},{"qty":500,"price":"$0.33250","currency":"USD"},{"qty":1000,"price":"$0.26599","currency":"USD"},{"qty":3000,"price":"$0.24106","currency":"USD"},{"qty":6000,"price":"$0.22443","currency":"USD"},{"qty":15000,"price":"$0.21612","currency":"USD"},{"qty":30000,"price":"$0.20781","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d0304f88c883d9a67810ee8dc6a12f8a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STM809SWX6F in this family?","answer":"Within the STM809 series, the main variants differ by threshold voltage: the STM809SWX6F monitors at 2.93 V, while the STM809RWX6F monitors at 2.63 V and the STM809TX6F at 3.08 V. All share the same SOT-23-3 pinout and active-low push-pull output. The choice depends on the supply rail you are supervising."},{"question":"What compliance documentation does STMicroelectronics provide for STM809SWX6F?","answer":"The part is ROHS3 compliant, covering all RoHS exemptions. STMicroelectronics publishes a datasheet with full electrical characteristics, package drawing, and reflow profile. No UL or IEC certification is listed for this simple reset IC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM809SWX6F","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM809SWX6F when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}