{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH3L06B","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH3L06B","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH3L06B","factsUrl":"https://icboms.com/api/mcp/products/STTH3L06B","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH3L06B, Fast Recovery =< 500ns, > 200mA (Io), Standard Diode, 600 V, 3 A, 85 ns trr, 1.3 V Vf, Surface Mount, TO-252-3 DPAK.","salesMarkdown":"The STTH3L06B is listed as obsolete. For a repair bench or a production line that needs this exact diode, the only path is the surplus and broker market — which is where this listing comes in. ## 85 ns reverse recovery — the switching edge That 85 ns trr is the spec that matters for a boost PFC stage or a flyback snubber — it tells you how quickly the diode turns off, which directly sets the switching loss and the snubber component values. At 3 A forward current and 600 V blocking, this diode fits the output rectifier slot in a 150–300 W offline converter, or the boost diode in a power-factor-correction stage running at 50–100 kHz. ## Forward drop and leakage — the thermal budget Maximum forward voltage is 1.3 V at 3 A, and reverse leakage is 3 µA at 600 V. The 1.3 V Vf means about 3.9 W peak dissipation at full rated current — that's manageable in the DPAK package with the tab soldered to a decent copper area, but you'll want to check the junction temperature. The junction is rated to 175 °C maximum, so there's headroom, but the thermal resistance from junction to ambient in a DPAK without a heatsink is around 80–100 °C/W, which limits continuous current to maybe 1.5–2 A in still air. If your design runs the diode hard, plan for the tab to carry the heat out through the PCB. ## DPAK footprint — layout gotcha The package is a standard TO-252-3 DPAK — the tab is the cathode. No insulator pad; the thermal vias go straight to the cathode plane. If you're swapping this onto a board that originally had a different diode, check the pinout — the STTH3L06B is a standard diode, not a Schottky, so the cathode is the tab and the middle pin, anode is pin 1.","metaTitle":"STTH3L06B Fast Recovery Diode, 600V 3A DPAK, 85ns trr","metaDescription":"STTH3L06B 600V 3A fast recovery diode in DPAK. 85 ns trr, 1.3V Vf at 3A. Replacement available.","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); Tube","Diode Type":"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":"STTH3L","Capacitance @ Vr, F":"-","Supplier Device Package":"DPAK","Reverse Recovery Time (trr)":"85 ns","Current - Reverse Leakage @ Vr":"3 µA @ 600 V","Voltage - DC Reverse (Vr) (Max)":"600 V","Current - Average Rectified (Io)":"3A","Operating Temperature - Junction":"175°C(Max)","Voltage - Forward (Vf) (Max) @ If":"1.3 V @ 3 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9bc27b3ea0b236aa7ff4abe41acd7105.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STTH3L06B/alternatives.json"},"ai":{"faq":[{"question":"Is STTH3L06B obsolete?","answer":"Yes, the STTH3L06B is listed as obsolete. STMicroelectronics has ended production. It is no longer available through the factory channel and must be sourced through the independent surplus market."},{"question":"What is the replacement for STTH3L06B?","answer":"There is no official successor listed for the STTH3L06B. A functional replacement would need to match the 600 V, 3 A, fast-recovery (85 ns trr) ratings and the DPAK footprint. The STTH3L06 (without the 'B' suffix) is the same base part — check if it is still active and pin-compatible. For a direct drop-in, compare the STTH3L06 datasheet to confirm."},{"question":"What is the reverse recovery time of STTH3L06B?","answer":"The reverse recovery time (trr) is 85 ns. That is the time from zero-crossing to full blocking, and it defines the switching loss in a hard-switched converter."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH3L06B","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH3L06B 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}}