{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS3150AFN","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS3150AFN","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS3150AFN","factsUrl":"https://icboms.com/api/mcp/products/STPS3150AFN","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS3150AFN Schottky diode, 150 V reverse voltage, 3 A average rectified current, 820 mV forward drop at 3 A, fast recovery <500 ns, DO-221AC SMA Flat Leads package, 175°C junction temperature.","salesMarkdown":"The STMicroelectronics STPS3150AFN is a 150 V, 3 A Schottky rectifier in the low-profile SMA Flat Leads package. With a forward voltage of 820 mV at the full 3 A rated current and a fast recovery time under 500 ns, it is designed for high-frequency switching applications like secondary-side rectification in flyback converters, boost diodes in PFC stages, and freewheeling diodes in motor drives. STMicroelectronics has discontinued production, so it is no longer available through the factory channel in new-manufacture quantities. For existing designs that already use the STPS3150AFN, the only sourcing path is the independent distribution market — surplus stock, new-old-stock, or broker-sourced material. ## Ratings that decide the fit The 150 V reverse voltage rating and 3 A average rectified current set the operating window. The 820 mV forward drop at 3 A is typical for a 150 V Schottky at this current. The fast recovery spec of <500 ns at >200 mA confirms it is a switching diode. The 175°C junction temperature means it can sit in a hot enclosure without derating prematurely. The SMA Flat Leads package is a surface-mount, flat-lead variant of the standard SMA. The leads are coplanar and flush with the body, which reduces the mounted height compared to a gull-wing SMA — useful for low-profile board stacks.","metaTitle":"STPS3150AFN Schottky Diode, 150 V 3 A, SMA Flat Leads","metaDescription":"STPS3150AFN Schottky diode, 150 V reverse voltage, 3 A average rectified current, 820 mV forward drop at 3 A. SMAflat Notch package.","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":"STPS3150","Capacitance @ Vr, F":"-","Supplier Device Package":"SMAflat Notch","Current - Reverse Leakage @ Vr":"2 µA @ 150 V","Voltage - DC Reverse (Vr) (Max)":"150 V","Current - Average Rectified (Io)":"3A","Operating Temperature - Junction":"175°C","Voltage - Forward (Vf) (Max) @ If":"820 mV @ 3 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f7a7a877ed799f841ed48e891d31fde0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS3150AFN/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for STPS3150AFN?","answer":"A replacement must be selected by matching the key specs: 150 V reverse voltage, 3 A average current, Schottky type, and DO-221AC / SMA Flat Leads package. Candidates from other manufacturers (e.g., ON Semiconductor, Diodes Inc.) in the same footprint should be validated for forward voltage, reverse leakage, and junction temperature rating before substituting into a production BOM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS3150AFN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS3150AFN 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}}