{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH1R04UY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH1R04UY","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH1R04UY","factsUrl":"https://icboms.com/api/mcp/products/STTH1R04UY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH1R04UY, Automotive AEC-Q101 Fast Recovery Diode, Standard, 400 V, 1 A, 30 ns trr, Surface Mount DO-214AA SMB, -40°C~175°C Junction.","salesMarkdown":"## 30 ns recovery in an SMB package — what it does for the board The STTH1R04UY is a 400 V, 1 A fast-recovery rectifier with a 30 ns reverse recovery time, qualified to AEC-Q101 for automotive use. ## 175 °C junction — under-hood headroom Junction temperature rating goes to 175 °C. That extra thermal margin matters when the diode is near an engine block or inside a transmission controller. ## SMB footprint — field-swappable with standard kit SMB is a two-pad surface-mount package. It reflows with a standard hot-air station and the cathode band is clearly marked on the body. ## Leakage and forward drop at the operating point Reverse leakage is 5 µA at 400 V, and forward voltage is 1.6 V at 1 A. The leakage is low enough to not heat the junction in standby, and the Vf at full load is typical for a fast-recovery part in this voltage class — expect about 1.6 W conduction loss at 1 A, which the SMB package can sink with a reasonable copper pad.","metaTitle":"STTH1R04UY Fast Recovery Diode, 30 ns, 400 V, 1 A, AEC-Q101","metaDescription":"STTH1R04UY automotive fast recovery diode: 30 ns trr, 400 V, 1 A, AEC-Q101, 175 °C Tj, DO-214AA SMB.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"Automotive, AEC-Q101","Package":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"Standard","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STTH1","Capacitance @ Vr, F":"-","Supplier Device Package":"SMB","Reverse Recovery Time (trr)":"30 ns","Current - Reverse Leakage @ Vr":"5 µA @ 400 V","Voltage - DC Reverse (Vr) (Max)":"400 V","Current - Average Rectified (Io)":"1A","Operating Temperature - Junction":"-40°C~175°C","Voltage - Forward (Vf) (Max) @ If":"1.6 V @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/29ac83a9a530725517a2a43ec932c318.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the reverse recovery time of STTH1R04UY?","answer":"The reverse recovery time (trr) is 30 ns, making it suitable for fast-switching applications like PFC stages and high-frequency DC-DC converters."},{"question":"Is STTH1R04UY automotive grade?","answer":"Yes, it is part of the Automotive series and qualified to AEC-Q101, meaning it meets the reliability standards for automotive applications including under-hood environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH1R04UY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH1R04UY 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}}