{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS1L40U","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS1L40U","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS1L40U","factsUrl":"https://icboms.com/api/mcp/products/STPS1L40U","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS1L40U, Schottky diode, 40V reverse, 1A forward, 500mV Vf at 1A, 35µA leakage, 150°C Tj, DO-214AA (SMB) surface mount, ROHS3 compliant.","salesMarkdown":"## 1A Schottky in a DO-214AA body The STPS1L40U is a 40 V, 1 A Schottky barrier rectifier from STMicroelectronics, housed in a DO-214AA (SMB) surface-mount package. It targets low-voltage, high-frequency rectification and freewheeling in DC-DC converters, polarity protection, and OR-ing diodes in 5 V and 3.3 V rails. At 1 A forward current, the maximum forward voltage is 500 mV — this sets the conduction loss floor at 0.5 W. The reverse leakage at 40 V is 35 µA, which rises with junction temperature and can dominate the thermal budget above 100°C.","metaTitle":"STPS1L40U Schottky Diode, 40V 1A, SMB, 500mV Vf","metaDescription":"STPS1L40U Schottky rectifier: 40V reverse, 1A forward, 500mV Vf at 1A, 35µA leakage, 150°C Tj. Active production, ROHS3. SMB package. Order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","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-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STPS1","Capacitance @ Vr, F":"-","Supplier Device Package":"SMB","Current - Reverse Leakage @ Vr":"35 µA @ 40 V","Voltage - DC Reverse (Vr) (Max)":"40 V","Current - Average Rectified (Io)":"1A","Operating Temperature - Junction":"150°C(Max)","Voltage - Forward (Vf) (Max) @ If":"500 mV @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4300","priceTiers":[{"qty":1,"price":"$0.43000","currency":"USD"},{"qty":10,"price":"$0.36400","currency":"USD"},{"qty":100,"price":"$0.25290","currency":"USD"},{"qty":500,"price":"$0.19744","currency":"USD"},{"qty":1000,"price":"$0.16048","currency":"USD"},{"qty":2500,"price":"$0.14346","currency":"USD"},{"qty":5000,"price":"$0.13617","currency":"USD"},{"qty":12500,"price":"$0.12644","currency":"USD"},{"qty":25000,"price":"$0.12352","currency":"USD"},{"qty":62500,"price":"$0.12038","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9ee9b600b436aec816bb270d0ffc1a2e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS1L40U/alternatives.json"},"ai":{"faq":[{"question":"Is STPS1L40U a direct replacement for 1N5819?","answer":"The STPS1L40U and 1N5819 are both 1 A Schottky rectifiers, but the 1N5819 is typically rated at 40 V in a DO-41 axial-lead package, while the STPS1L40U is a surface-mount SMB part. They are not pin-compatible — the 1N5819 is through-hole, the STPS1L40U is surface mount. For a surface-mount replacement, the SS14 (DO-214AC) is a closer footprint match but has different thermal characteristics."},{"question":"Is STPS1L40U RoHS compliant?","answer":"Yes, the STPS1L40U is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS1L40U","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS1L40U 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}}