{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH3R04","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH3R04","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH3R04","factsUrl":"https://icboms.com/api/mcp/products/STTH3R04","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH3R04, Fast Recovery Rectifier, 400 V, 3 A, 35 ns trr, DO-201AD Axial, Through Hole, Tape & Box.","salesMarkdown":"The STTH3R04 is a 400 V, 3 A fast-recovery rectifier from STMicroelectronics, built with standard planar technology and housed in a through-hole DO-201AD axial package. Its 35 ns reverse recovery time puts it in the class used for high-frequency rectification in switch-mode power supplies, PFC stages, and flyback converters where the diode's turn-off speed directly affects switching losses and EMI. The 1.5 V forward drop at 3 A is a typical figure for this voltage and speed class — expect it to run warm in continuous 3 A service, so derate the current or add a heatsink if the ambient climbs above 85 °C. ST officially lists the STTH3R04 as Obsolete. That means no further production runs, no last-time-buy window still open. The 400 V / 3 A / 35 ns trr combination is common enough that a pin-compatible replacement from the same STTH3R family may exist — but no official successor is recorded. ## DO-201AD — field-swap friendly The DO-201AD axial package is about as field-serviceable as a diode gets. Two solder points, no polarity confusion if the cathode band is still visible — you can swap it on site with a basic iron and a solder sucker. No hot-air station, no reflow profile. The through-hole leads also tolerate a bit of mechanical stress during extraction, which matters when the board is already installed in a panel or a drive cabinet.","metaTitle":"STTH3R04 Fast Recovery Diode, 400V 3A, 35ns trr, DO-201AD","metaDescription":"STTH3R04 fast recovery rectifier: 400V, 3A, 35ns trr, DO-201AD axial. RFQ for current availability and pricing.","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 & Box (TB)","Technology":"Standard","Mounting Type":"Through Hole","Package / Case":"DO-201AD, Axial","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STTH3R","Capacitance @ Vr, F":"-","Supplier Device Package":"DO-201AD","Reverse Recovery Time (trr)":"35 ns","Current - Reverse Leakage @ Vr":"5 µA @ 400 V","Voltage - DC Reverse (Vr) (Max)":"400 V","Current - Average Rectified (Io)":"3A","Operating Temperature - Junction":"175°C (Max)","Voltage - Forward (Vf) (Max) @ If":"1.5 V @ 3 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b3471ccdfc6412c132f7c671cc95fd59.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy STTH3R04?","answer":"The STTH3R04 is obsolete, so standard distributor stock is depleted. We source it through independent distribution — submit an RFQ and we'll confirm current availability and pricing at quote time."},{"question":"Is STTH3R04 obsolete or discontinued?","answer":"Yes, ST lists the product status as Obsolete. No further factory production is planned."},{"question":"What is the reverse recovery time of STTH3R04?","answer":"The reverse recovery time (trr) is 35 ns."},{"question":"What package is the STTH3R04 in?","answer":"It comes in a DO-201AD axial, through-hole package."},{"question":"What are the specs of STTH3R04 vs STTH3R06?","answer":"Both are 3 A fast-recovery rectifiers in DO-201AD. The STTH3R04 is rated at 400 V reverse voltage; the STTH3R06 is rated at 600 V. The trr and forward voltage may differ — check the respective datasheets for your operating point before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH3R04","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH3R04 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}}