{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS1L40AFN","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS1L40AFN","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS1L40AFN","factsUrl":"https://icboms.com/api/mcp/products/STPS1L40AFN","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS1L40AFN Schottky rectifier, 40 V Vrrm, 1 A Io, 500 mV Vf at 1 A, fast recovery ≤ 500 ns, surface-mount DO-221AC SMA Flat Leads package.","salesMarkdown":"The STMicroelectronics STPS1L40AFN is a 40 V, 1 A Schottky barrier rectifier in the DO-221AC SMA Flat Leads package. It's built for low-voltage, high-frequency rectification — the 500 mV forward drop at 1 A cuts conduction losses in switching power supplies, freewheeling diodes, and polarity protection circuits. Rated junction temperature hits 175°C, so it can sit near hot magnetics or in confined enclosures. ## Key specs at a glance Reverse voltage: 40 V maximum. Average rectified current: 1 A. Forward voltage: 500 mV max at 1 A. Reverse leakage: 35 µA at 40 V. Recovery speed: fast recovery (≤ 500 ns, > 200 mA). The STPS1L40AFN is marked obsolete. STMicroelectronics no longer manufactures this exact order code. That means no factory lead times, no last-time-buy window — the only channel is independent distribution sourcing existing stock. If you're qualifying a new design, look at current STPS1L-series parts in the same SMA Flat Leads package, though pin-for-pin compatibility should be verified against the footprint.","metaTitle":"STPS1L40AFN Schottky Diode, 40V 1A, SMA Flat Leads","metaDescription":"STPS1L40AFN Schottky rectifier: 40V reverse voltage, 1A average current, 500mV forward drop at 1A.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"Schottky","Mounting Type":"Surface Mount","Package / Case":"DO-221AC, SMA Flat Leads","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STPS1","Capacitance @ Vr, F":"-","Supplier Device Package":"SMAflat Notch","Current - Reverse Leakage @ Vr":"35 µA @ 40 V","Voltage - DC Reverse (Vr) (Max)":"40 V","Current - Average Rectified (Io)":"1A","Operating Temperature - Junction":"175°C","Voltage - Forward (Vf) (Max) @ If":"500 mV @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.5400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/78b14766c68f8eca3ade07f635c9f1c4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS1L40AFN/alternatives.json"},"ai":{"faq":[{"question":"Is STPS1L40AFN obsolete?","answer":"Yes, STPS1L40AFN is obsolete. STMicroelectronics has discontinued production. It is no longer available through factory channels."},{"question":"What is the replacement for STPS1L40AFN?","answer":"STMicroelectronics does not list a direct successor for STPS1L40AFN. For a current-production alternative, look at the STPS1L-series parts in the same SMA Flat Leads package, but verify footprint and electrical compatibility against your design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS1L40AFN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS1L40AFN when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}