{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH4R02","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH4R02","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH4R02","factsUrl":"https://icboms.com/api/mcp/products/STTH4R02","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH4R02, Fast Recovery Diode, Standard 200V 4A, 30ns Reverse Recovery Time, Through Hole DO-201AB Axial, 175°C Junction.","salesMarkdown":"The STMicroelectronics STTH4R02 is a 200 V, 4 A fast-recovery epitaxial diode in a through-hole DO-201AB axial package. Its 30 ns reverse recovery time (trr) places it squarely in the ultrafast class, suited for continuous-current-mode (CCM) power-factor-correction boost stages, secondary-side rectification in 100 W–300 W switch-mode supplies, and freewheeling diodes in motor-drive snubbers where recovery speed directly impacts switching loss and EMI. The 30 ns reverse recovery time is the defining parameter. In a 100 kHz PFC boost stage, that trr keeps the reverse-recovery charge low enough that the MOSFET turn-on losses stay manageable without resorting to SiC. Compare this to a standard recovery diode in the same voltage class — the STTH4R02 cuts the recovery loss by roughly an order of magnitude. The 1.05 V forward drop at 4 A is a reasonable trade-off: you get the speed without the 1.5 V+ Vf of some older ultrafast parts. ## Package and mounting — axial lead, no surprises The DO-201AB axial package is a standard through-hole form factor. Lead spacing and body diameter match the common DO-201 footprint used in PFC boost and output rectifier positions.","metaTitle":"STTH4R02 Fast Recovery Diode, 200V 4A, 30ns trr, DO-201AB","metaDescription":"STTH4R02 200V 4A fast recovery diode with 30ns trr in DO-201AB axial package.","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":"Cut Tape (CT); Tape & Box (TB)","Diode Type":"Standard","Mounting Type":"Through Hole","Package / Case":"DO-201AB, DO-32, Axial","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STTH4R02","Capacitance @ Vr, F":"-","Supplier Device Package":"DO-201AB","Reverse Recovery Time (trr)":"30 ns","Current - Reverse Leakage @ Vr":"3 µA @ 200 V","Voltage - DC Reverse (Vr) (Max)":"200 V","Current - Average Rectified (Io)":"4A","Operating Temperature - Junction":"175°C(Max)","Voltage - Forward (Vf) (Max) @ If":"1.05 V @ 4 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6ff59b5fa03d09cd172915f6b2c663f4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STTH4R02/alternatives.json"},"ai":{"faq":[{"question":"What is the reverse recovery time of STTH4R02?","answer":"The STTH4R02 has a reverse recovery time (trr) of 30 ns, classifying it as an ultrafast recovery diode suitable for switching frequencies above 100 kHz."},{"question":"What is the direct replacement for STTH4R02?","answer":"No official direct replacement order code is listed by STMicroelectronics. A functionally similar part would need to match the 200 V, 4 A rating, 30 ns trr, and DO-201AB package. Cross-referencing against the STTH4R02 family or a comparable ultrafast diode from another manufacturer requires checking the specific BOM requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH4R02","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH4R02 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}}