{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM811LW16F","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM811LW16F","canonicalUrl":"https://icboms.com/stmicroelectronics/STM811LW16F","factsUrl":"https://icboms.com/api/mcp/products/STM811LW16F","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM811LW16F Simple Reset/Power-On Reset, Active Low, Push-Pull Output, 4.63V Threshold, 140ms Timeout, SOT-143-4, Tape & Reel.","salesMarkdown":"## Threshold selection and reset behaviour The STM811LW16F: The 4.63 V trip point is the key fit parameter — it sits just below a nominal 5 V supply, so the supervisor catches brownout conditions before the downstream logic loses its state. Reset is active-low with a push-pull output stage, which means it drives the reset line low directly without needing an external pull-up resistor. The reset timeout is a minimum of 140 ms after the supply recovers above the threshold, giving the system clock and core logic time to stabilise before the processor starts executing. Housed in a SOT-143-4 package (supplier device package SOT-143-4), the STM811LW16F occupies minimal board area and is suited for compact designs where a supervisor is needed alongside the main processor. The single-voltage monitoring channel keeps the pin count low and the layout simple. The part carries full manufacturer traceability and warranty backing.","metaTitle":"STM811LW16F Simple Reset/Power-On Reset, 4.63V Threshold","metaDescription":"STMicroelectronics STM811LW16F supervisor IC, active-low push-pull reset, 4.63V threshold, 140ms timeout. Industrial temp, SOT-143-4. Active, RoHS3.","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-253-4, TO-253AA","lifecycle_stage":"eol_hot","Voltage - Threshold":"4.63V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"SOT-143-4","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.54","priceTiers":[{"qty":1,"price":"$1.54000","currency":"USD"},{"qty":10,"price":"$1.37700","currency":"USD"},{"qty":25,"price":"$1.30720","currency":"USD"},{"qty":100,"price":"$1.07370","currency":"USD"},{"qty":250,"price":"$1.00368","currency":"USD"},{"qty":500,"price":"$0.88696","currency":"USD"},{"qty":1000,"price":"$0.77070","currency":"USD"},{"qty":3000,"price":"$0.77070","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d0304f88c883d9a67810ee8dc6a12f8a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM811LW16F/alternatives.json"},"ai":{"faq":[{"question":"Is STM811LW16F a drop-in replacement for STM811MW16F?","answer":"No — the two parts have different threshold voltages. The STM811MW16F monitors a different rail (threshold not specified in this record), so swapping them without verifying the supply voltage would cause the supervisor to trip at the wrong point. Package and pinout are the same SOT-143-4, but the threshold must match the design."},{"question":"What compliance documentation does STMicroelectronics provide for STM811LW16F?","answer":"The part is RoHS3 compliant. STMicroelectronics provides a RoHS certificate and material declaration upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM811LW16F","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM811LW16F 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}}