{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS2L40AFN","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS2L40AFN","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS2L40AFN","factsUrl":"https://icboms.com/api/mcp/products/STPS2L40AFN","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS2L40AFN Schottky rectifier diode, 40 V DC reverse, 2 A average forward, 430 mV forward drop at 2 A, SMA Flat Leads (DO-221AC) package, surface mount.","salesMarkdown":"## Schottky rectifier for low-voltage DC rails The STPS2L40AFN is a 2 A, 40 V Schottky rectifier diode from STMicroelectronics, designed for low forward-voltage drop in power supply and polarity-protection circuits. Its 430 mV typical forward drop at 2 A keeps conduction losses low in moderate-current DC rails. ## Package and mounting — SMAflat for tight boards Housed in the DO-221AC (SMA Flat Leads) package, the STPS2L40AFN is a surface-mount device with a low-profile body suited for dense PCB layouts. The flat-lead design reduces board height compared to standard SMA packages, which helps in slim enclosures. ## Reverse leakage and junction temperature limits Reverse leakage is specified at 220 µA at the full 40 V reverse voltage. The maximum junction temperature is 150 °C, which sets the thermal derating boundary for continuous operation. In a 2 A rectifier application, the low Vf helps keep the junction temperature within limits, but the leakage current rises with temperature — a consideration for high-ambient or poorly vented enclosures.","metaTitle":"STPS2L40AFN Schottky Diode, 40 V 2 A, SMAflat Package","metaDescription":"STPS2L40AFN Schottky rectifier, 40 V reverse, 2 A forward, 430 mV Vf. RFQ for current availability.","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":"STPS2","Capacitance @ Vr, F":"-","Supplier Device Package":"SMAflat Notch","Current - Reverse Leakage @ Vr":"220 µA @ 40 V","Voltage - DC Reverse (Vr) (Max)":"40 V","Current - Average Rectified (Io)":"2A","Operating Temperature - Junction":"150°C","Voltage - Forward (Vf) (Max) @ If":"430 mV @ 2 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/208ae93b04ded3eaa04dc82e7e4ff316.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS2L40AFN/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy STPS2L40AFN?","answer":"The STPS2L40AFN is obsolete and no longer available through standard distribution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS2L40AFN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS2L40AFN 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}}