{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH12T06DI","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH12T06DI","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH12T06DI","factsUrl":"https://icboms.com/api/mcp/products/STTH12T06DI","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH12 series, STTH12T06DI — fast recovery diode, 600 V reverse voltage, 12 A average rectified current, 20 ns reverse recovery time, TO-220AC insulated through-hole package.","salesMarkdown":"## 20 ns trr — the hard-switching PFC workhorse The STTH12T06DI is a 600 V, 12 A fast recovery diode from STMicroelectronics' STTH12 series, packaged in a TO-220AC insulated through-hole case. Its 20 ns reverse recovery time places it squarely in the high-frequency rectifier and power-factor-correction (PFC) boost stage, where switching losses track trr directly. ## Forward drop and leakage at temperature Forward voltage is specified at 2.95 V maximum at 12 A — the conduction loss at full load is about 35 W, which the TO-220AC insulated tab must sink to a heatsink. Reverse leakage is 20 µA at 600 V, but rises with junction temperature; derate the blocking margin above 125 °C. For production builds this means the BOM line does not require a bridge buy or alternate qualification now.","metaTitle":"STTH12T06DI Fast Recovery Diode, 600 V 12 A, 20 ns trr","metaDescription":"STTH12T06DI: 600 V, 12 A fast recovery diode, 20 ns trr, TO-220AC insulated package. Active lifecycle, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Tube","Technology":"Standard","Mounting Type":"Through Hole","Package / Case":"TO-220-2 Insulated, TO-220AC","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STTH12","Capacitance @ Vr, F":"-","Supplier Device Package":"TO-220AC ins","Reverse Recovery Time (trr)":"20 ns","Current - Reverse Leakage @ Vr":"20 µA @ 600 V","Voltage - DC Reverse (Vr) (Max)":"600 V","Current - Average Rectified (Io)":"12A","Operating Temperature - Junction":"-40°C ~ 175°C","Voltage - Forward (Vf) (Max) @ If":"2.95 V @ 12 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.0900","priceTiers":[{"qty":1,"price":"$3.27000","currency":"USD"},{"qty":10,"price":"$2.93600","currency":"USD"},{"qty":100,"price":"$2.40590","currency":"USD"},{"qty":500,"price":"$2.04814","currency":"USD"},{"qty":1000,"price":"$2.01792","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/26ee118504ebc1af8794918728e8214b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STTH12T06DI/alternatives.json"},"ai":{"faq":[{"question":"Is STTH12T06DI a fast recovery diode?","answer":"Yes. The STTH12T06DI is classified as a fast recovery diode with a reverse recovery time of 20 ns, making it suitable for switching frequencies above 50 kHz in continuous-current-mode PFC stages."},{"question":"What is the closest pin-compatible alternative in the STTH12 family?","answer":"Within the STTH12 series, the STTH12T06DI shares the same TO-220AC insulated package and 600 V / 12 A rating as the non-insulated STTH12R06DI — the difference is the tab insulation. For a drop-in replacement with the same trr, the STTH12T06DI is the insulated version; the non-insulated variant requires a different heatsink mounting strategy."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH12T06DI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH12T06DI 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}}