{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS340S","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS340S","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS340S","factsUrl":"https://icboms.com/api/mcp/products/STPS340S","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS340S Schottky diode, 40 V reverse, 3 A average rectified, 630 mV forward voltage at 3 A, fast recovery ≤500 ns, SMC surface-mount package.","salesMarkdown":"The STPS340S is a 40 V, 3 A Schottky rectifier in an SMC (DO-214AB) surface-mount package. It is specified for fast recovery — ≤500 ns at >200 mA — which suits it for low-voltage power rectification, freewheeling diodes in DC-DC converters, and reverse-polarity protection where the forward voltage drop directly affects efficiency. ## Forward voltage and leakage — the efficiency trade-off At 3 A forward current the maximum forward voltage is 630 mV — a relatively low drop for a 3 A Schottky, which keeps conduction losses manageable in a 5 V or 3.3 V rail. The base product number is STPS340; the 'S' suffix indicates the SMC package variant.","metaTitle":"STPS340S Schottky Diode, 40V 3A, SMC Package","metaDescription":"STPS340S Schottky diode, 40 V reverse, 3 A forward, 630 mV Vf at 3 A, fast recovery ≤500 ns. Active production, ROHS3 compliant.","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-214AB, SMC","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STPS340","Capacitance @ Vr, F":"-","Supplier Device Package":"SMC","Current - Reverse Leakage @ Vr":"20 µA @ 40 V","Voltage - DC Reverse (Vr) (Max)":"40 V","Current - Average Rectified (Io)":"3A","Operating Temperature - Junction":"150°C(Max)","Voltage - Forward (Vf) (Max) @ If":"630 mV @ 3 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6200","priceTiers":[{"qty":1,"price":"$0.62000","currency":"USD"},{"qty":10,"price":"$0.53100","currency":"USD"},{"qty":100,"price":"$0.39640","currency":"USD"},{"qty":500,"price":"$0.31144","currency":"USD"},{"qty":1000,"price":"$0.24065","currency":"USD"},{"qty":2500,"price":"$0.23152","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/15140ac353d4c6ed29690238d09f6b62.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS340S/alternatives.json"},"ai":{"faq":[{"question":"Is STPS340S a direct replacement for STPS340?","answer":"Yes — STPS340S is the SMC surface-mount variant of the base STPS340. The base product number is STPS340; the 'S' suffix denotes the SMC package. If your BOM calls for the SMC footprint, this is the correct part."},{"question":"Is STPS340S RoHS compliant and lead-free?","answer":"Yes — STPS340S is ROHS3 compliant, covering the current EU RoHS exemption categories. No separate lead-free statement is needed; ROHS3 compliance implies lead-free construction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS340S","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS340S 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}}