{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS3L40SY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS3L40SY","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS3L40SY","factsUrl":"https://icboms.com/api/mcp/products/STPS3L40SY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS3L40SY, Q Automotive Schottky diode, 40 V reverse, 3 A average rectified, 500 mV forward drop at 3 A, fast recovery ≤500 ns, SMC surface-mount package, -40°C to 150°C junction.","salesMarkdown":"## Schottky rectifier for 40 V, 3 A automotive power rails The STPS3L40SY is a 40 V, 3 A Schottky diode from STMicroelectronics' Q Automotive series, housed in a DO-214AB (SMC) surface-mount package. Its 500 mV typical forward drop at 3 A keeps conduction losses low in the output rectification stage of a DC-DC converter or the freewheeling path of a motor-drive bridge. The 100 µA reverse leakage at 40 V is typical for a 40 V Schottky and rises with junction temperature, so the thermal design should budget for leakage at the 150°C maximum junction. ## Junction temperature and automotive qualification The Q Automotive series designation signals that this part is built and tested to the AEC-Q101 stress qualification for automotive-grade discrete semiconductors. Lifecycle status is Active, meaning ST continues to manufacture and support this part with no last-time-buy notice in effect. ROHS3 compliance covers the current exemption list for automotive applications. No stock-holding claim; each order is verified against the BOM quantity and delivery window.","metaTitle":"STPS3L40SY Schottky Diode, 40V 3A, SMC, Q Automotive","metaDescription":"STPS3L40SY Schottky rectifier, 40V 3A, 500 mV Vf at 3 A, fast recovery ≤500 ns. Q Automotive grade, SMC package. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"Q Automotive","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"Q Automotive","Package":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"Schottky","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STPS3","Capacitance @ Vr, F":"-","Supplier Device Package":"SMC","Current - Reverse Leakage @ Vr":"100 µA @ 40 V","Voltage - DC Reverse (Vr) (Max)":"40 V","Current - Average Rectified (Io)":"3A","Operating Temperature - Junction":"-40°C~150°C","Voltage - Forward (Vf) (Max) @ If":"500 mV @ 3 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0200","priceTiers":[{"qty":1,"price":"$1.08000","currency":"USD"},{"qty":10,"price":"$0.96600","currency":"USD"},{"qty":100,"price":"$0.75330","currency":"USD"},{"qty":500,"price":"$0.62230","currency":"USD"},{"qty":1000,"price":"$0.53568","currency":"USD"},{"qty":2500,"price":"$0.53568","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ea8a239834bc3067a8bb9677ca7cef43.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS3L40SY/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between the STPS3L40SY and the STPS3L40?","answer":"The STPS3L40SY carries the Q Automotive qualification (AEC-Q101 stress-tested), while the STPS3L40 is the commercial-grade variant. Electrically the two parts share the same 40 V, 3 A, 500 mV Vf ratings and the same SMC package. The SY suffix is the automotive-grade version for production BOMs that require AEC-Q compliance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS3L40SY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS3L40SY 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}}