{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH112","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH112","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH112","factsUrl":"https://icboms.com/api/mcp/products/STTH112","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH112, Fast Recovery Diode, Standard, 1200 V, 1 A, 75 ns trr, DO-204AL (DO-41) Axial, Through Hole.","salesMarkdown":"## 1200 V fast recovery diode in a DO-41 axial package The STTH112 is a 1200 V, 1 A fast-recovery rectifier from STMicroelectronics, built for hard-switched power stages where reverse recovery charge needs to be low. Its 75 ns trr keeps switching losses in check at frequencies where a standard recovery diode would overheat. ## Switching speed and voltage class — the fit decision The 1200 V blocking voltage gives headroom for 400 VDC bus rails with derating for transients, but the 1 A average current limits the part to low-power auxiliary rails or gate-drive bootstrap supplies — not the main output rectifier of a 100 W+ supply. Forward voltage is 1.9 V maximum at 1 A, which translates to 1.9 W conduction loss at full rated current — a significant thermal load for the DO-41 package. No successor order code is recorded in the lifecycle entry. For new designs, a pin-compatible fast-recovery diode in the same voltage and current class — such as a 1200 V, 1 A, DO-41 part from another manufacturer — should be qualified.","metaTitle":"STTH112 Fast Recovery Diode, 1200 V, 1 A, DO-41","metaDescription":"STTH112 fast recovery diode: 1200 V, 1 A, 75 ns trr, DO-41 axial. Check replacement options.","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)","Diode Type":"Standard","Mounting Type":"Through Hole","Package / Case":"DO-204AL, DO-41, Axial","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STTH112","Capacitance @ Vr, F":"-","Supplier Device Package":"DO-41","Reverse Recovery Time (trr)":"75 ns","Current - Reverse Leakage @ Vr":"5 µA @ 1200 V","Voltage - DC Reverse (Vr) (Max)":"1200 V","Current - Average Rectified (Io)":"1A","Operating Temperature - Junction":"175°C(Max)","Voltage - Forward (Vf) (Max) @ If":"1.9 V @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3db2616c4477c3dc0aa67a971591ed5a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STTH112/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for the STTH112?","answer":"A functionally equivalent fast-recovery diode rated 1200 V, 1 A in a DO-41 package from another manufacturer should be evaluated for new designs. The 75 ns trr and 1.9 V Vf are the key parameters to match."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH112","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH112 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}}