{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH110A","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH110A","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH110A","factsUrl":"https://icboms.com/api/mcp/products/STTH110A","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH110A, Fast Recovery Rectifier, 1000 V Vr, 1 A Io, 75 ns trr, 1.7 Vf @ 1 A, DO-214AC SMA, Surface Mount, Active.","salesMarkdown":"The STTH110A is a 1000 V, 1 A fast-recovery rectifier from STMicroelectronics, with a 75 ns reverse recovery time that puts it in the ultrafast class. It is built for continuous-current-mode PFC boost stages, flyback snubbers, and output rectification in 400 V bus power supplies where switching losses matter. The 1.7 V forward drop at 1 A is typical for a 1 kV device — the trade-off for the high voltage blocking and fast turn-off. A 75 ns reverse recovery time at 1 A and 1000 V means the diode can switch at 100 kHz or higher without excessive reverse-recovery losses. In a PFC boost stage running a 400 V DC bus, that trr keeps the MOSFET turn-on current spike low enough to avoid ringing and EMI filter headaches. It is also fast enough for the secondary-side rectification in a 100 W to 300 W flyback converter, where the diode's recovery charge directly affects the leakage-inductance reset time. ## DO-214AC SMA — rework and footprint notes The SMA package is a JEDEC standard outline, so the footprint is shared with dozens of other 1 A rectifiers from various vendors. It is a two-pin surface-mount part with a clear cathode band — pin 1 orientation is unambiguous under a hot-air station. The plastic body is MSL 1 per the package family, so no bake required before reflow as long as the reel seal is intact. For hand rework, a 350 °C hot-air nozzle at low flow lifts the part cleanly without lifting the pad, provided the board has a thermal relief on the cathode pad.","metaTitle":"ST STTH110A Fast Recovery Diode, 1 kV 1 A, 75 ns trr","metaDescription":"STMicroelectronics STTH110A fast recovery rectifier diode: 1000 V reverse voltage, 1 A forward current, 75 ns trr. DO-214AC SMA surface-mount package.","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":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"Standard","Mounting Type":"Surface Mount","Package / Case":"DO-214AC, SMA","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STTH110","Capacitance @ Vr, F":"-","Supplier Device Package":"SMA (DO-214AC)","Reverse Recovery Time (trr)":"75 ns","Current - Reverse Leakage @ Vr":"10 µA @ 1000 V","Voltage - DC Reverse (Vr) (Max)":"1000 V","Current - Average Rectified (Io)":"1A","Operating Temperature - Junction":"175°C(Max)","Voltage - Forward (Vf) (Max) @ If":"1.7 V @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7a86f78ba9f807c2b500cc556ddd117b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STTH110A/alternatives.json"},"ai":{"faq":[{"question":"Is STTH110A equivalent to STTH110?","answer":"The STTH110 is the base product number; the STTH110A is the specific variant in the DO-214AC SMA package. The die and electrical ratings (1000 V, 1 A, 75 ns trr) are the same — the 'A' suffix denotes the package option. They are functionally equivalent, but the STTH110A is the surface-mount version."},{"question":"What package does STTH110A come in and is it surface mount?","answer":"The STTH110A comes in a DO-214AC SMA package, which is a surface-mount package."},{"question":"What is STTH110A's reverse recovery time?","answer":"The STTH110A has a 75 ns reverse recovery time (trr), which classifies it as an ultrafast recovery diode suitable for switching frequencies above 100 kHz in PFC and flyback circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH110A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH110A 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}}