{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH2006W","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH2006W","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH2006W","factsUrl":"https://icboms.com/api/mcp/products/STTH2006W","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH2006W, Fast Recovery Diode, Standard, 600 V, 20 A, 70 ns trr, 1.75 Vf @ 20 A, DO-247-2 Through Hole.","salesMarkdown":"## 20 A, 600 V fast recovery diode — obsolete, sourced on the surplus market The STTH2006W is a standard fast recovery diode from STMicroelectronics, rated for 20 A average rectified current and 600 V reverse voltage. The 1.75 V forward voltage at 20 A sets the conduction loss budget — at full rated current that is 35 W, so a substantial heatsink is non-negotiable. ## 70 ns trr — switching loss anchor for the PFC stage The 70 ns reverse recovery time is the headline switching parameter. In a continuous-conduction-mode PFC boost running at 100 kHz, the recovery charge per cycle is small enough that the MOSFET turn-on loss stays manageable. Compare this to a standard recovery diode with trr in the microsecond range — the STTH2006W cuts the recovery spike and the associated EMI signature. The 25 µA reverse leakage at 600 V is a room-temperature figure; at 125°C junction expect it to climb, so the thermal design must account for leakage-induced self-heating at high line. ## DO-247-2 through-hole — heatsink mounting matters The DO-247-2 package with straight leads is a through-hole TO-247 variant. The large metal tab provides a low thermal resistance path to the heatsink — plan for a thermal pad or mica insulator with thermal grease. STMicroelectronics lists the STTH2006W as obsolete. For new designs, consider the STTH2006CT (same current/voltage in a TO-220AB package) or a current-generation ST power diode in the same voltage class — but verify pinout and thermal pad compatibility.","metaTitle":"STTH2006W Fast Recovery Diode, 20 A 600 V, 70 ns trr","metaDescription":"STTH2006W is an obsolete STMicroelectronics fast recovery diode rated 20 A at 600 V with 70 ns trr. DO-247-2 through-hole 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":"Tube","Diode Type":"Standard","Mounting Type":"Through Hole","Package / Case":"DO-247-2 (Straight Leads)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STTH2","Capacitance @ Vr, F":"-","Supplier Device Package":"DO-247","Reverse Recovery Time (trr)":"70 ns","Current - Reverse Leakage @ Vr":"25 µA @ 600 V","Voltage - DC Reverse (Vr) (Max)":"600 V","Current - Average Rectified (Io)":"20A","Operating Temperature - Junction":"175°C(Max)","Voltage - Forward (Vf) (Max) @ If":"1.75 V @ 20 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d0c6b5188580cc6b8ca4cca9b28f7ab5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STTH2006W/alternatives.json"},"ai":{"faq":[{"question":"What is the STTH2006W equivalent?","answer":"No official direct replacement is listed by STMicroelectronics. The closest functional equivalent within the same family is the STTH2006CT, which shares the same 20 A / 600 V rating and 70 ns trr but comes in a TO-220AB package rather than DO-247-2. Verify the mounting hole pattern and heatsink interface before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH2006W","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH2006W 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}}