{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH10R04B","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH10R04B","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH10R04B","factsUrl":"https://icboms.com/api/mcp/products/STTH10R04B","rawCanonicalId":null},"summary":{"shortDescription":"ST STTH10R04B, Fast Recovery Diode, 400 V, 10 A, 40 ns trr, DPAK (TO-252), Surface Mount, 175°C Junction.","salesMarkdown":"## 400 V, 10 A, 40 ns trr — the switching diode for PFC and SMPS Its 40 ns reverse recovery time places it in the class of ultrafast diodes used for continuous-conduction-mode boost PFC stages, output rectification in switching supplies, and freewheeling diodes in motor-drive snubbers. ## 40 ns trr — where it fits in the switching loop At 40 ns reverse recovery time, this diode recovers fast enough to keep the switching node from ringing into the MOSFET body diode in a 100 kHz hard-switched converter. The 1.7 V forward drop at 10 A is the conduction-loss number to budget for — at 10 A continuous the die dissipates 17 W, so the DPAK tab must see a low-thermal-resistance board footprint. Reverse leakage is 10 µA at 400 V, a figure that climbs with junction temperature but stays manageable below 125°C. ## Obsolete — sourcing from the independent channel The STTH10R04B is listed as obsolete. For production or repair BOMs that call out this specific diode, the supply path runs through independent distribution and surplus inventory.","metaTitle":"STTH10R04B Diode, 400V 10A Fast Recovery 40ns trr, DPAK","metaDescription":"STTH10R04B fast-recovery diode, 400V 10A, 40ns trr, DPAK surface-mount.","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":"Tube","Technology":"Standard","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STTH10","Capacitance @ Vr, F":"-","Supplier Device Package":"DPAK","Reverse Recovery Time (trr)":"40 ns","Current - Reverse Leakage @ Vr":"10 µA @ 400 V","Voltage - DC Reverse (Vr) (Max)":"400 V","Current - Average Rectified (Io)":"10A","Operating Temperature - Junction":"175°C (Max)","Voltage - Forward (Vf) (Max) @ If":"1.7 V @ 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8137b3499082c95ac276d245fa1764e7.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STTH10R04B/alternatives.json"},"ai":{"faq":[{"question":"What is the reverse recovery time of STTH10R04B?","answer":"The reverse recovery time (trr) is 40 ns, making it suitable for fast-switching applications such as PFC boost stages and output rectification in SMPS designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH10R04B","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH10R04B 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}}