{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STTH20L03CT","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STTH20L03CT","canonicalUrl":"https://icboms.com/stmicroelectronics/STTH20L03CT","factsUrl":"https://icboms.com/api/mcp/products/STTH20L03CT","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STTH20L03CT, fast recovery diode array, 300 V, 10 A per diode, 26 ns reverse recovery time, common-cathode pair, TO-220 through-hole package, -40 to 175°C junction temperature.","salesMarkdown":"## 26 ns trr — fast enough for 50–100 kHz PFC stages Its 26 ns reverse recovery time makes it a candidate for hard-switched topologies like power-factor-correction boost stages, output rectification in 48 V telecom supplies, and freewheeling diodes in motor-drive inverters. The 1.2 V forward voltage at 10 A sets the conduction loss floor — at 10 A average per diode, each junction dissipates about 12 W. That needs a heatsink in continuous operation, but the TO-220 tab gives a low thermal path to a clip-on or bolt-on sink. ## 175°C junction — thermal margin in cramped enclosures In a sealed PSU or a motor-drive bay where ambient can hit 85°C, the 175°C ceiling leaves room for the self-heating from the 1.2 V forward drop without derating the average current. Reverse leakage at 300 V is 10 µA typical — low enough that it doesn't eat into the thermal budget at high line, but it rises exponentially with junction temperature. At 150°C junction the leakage can be several milliamps, so the heatsink design should keep the junction below 140°C for best efficiency. ## Active production — no LTB timeline to manage The TO-220 through-hole package is a standard leaded form — no MSL concerns, no moisture sensitivity label. Tube shipment is the factory default, but it can also be or cut tape on request.","metaTitle":"STTH20L03CT dual common-cathode diode, 300 V, 10 A","metaDescription":"STTH20L03CT fast-recovery diode array, 300 V, 10 A per diode, 26 ns trr, TO-220, active production, 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-220-3","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STTH20","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-220","Reverse Recovery Time (trr)":"26 ns","Current - Reverse Leakage @ Vr":"10 µA @ 300 V","Voltage - DC Reverse (Vr) (Max)":"300 V","Operating Temperature - Junction":"-40°C ~ 175°C","Voltage - Forward (Vf) (Max) @ If":"1.2 V @ 10 A","Current - Average Rectified (Io) (per Diode)":"10A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.9300","priceTiers":[{"qty":1,"price":"$1.93000","currency":"USD"},{"qty":10,"price":"$1.60300","currency":"USD"},{"qty":100,"price":"$1.27560","currency":"USD"},{"qty":500,"price":"$1.07940","currency":"USD"},{"qty":1000,"price":"$0.91585","currency":"USD"},{"qty":2000,"price":"$0.87006","currency":"USD"},{"qty":5000,"price":"$0.83735","currency":"USD"},{"qty":10000,"price":"$0.80963","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/59a33a39bd75368dd6af9ee3d22f6abb.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STTH20L03CT/alternatives.json"},"ai":{"faq":[{"question":"What is the reverse recovery time of STTH20L03CT?","answer":"The reverse recovery time (trr) is 26 ns. This is the time from zero-current crossing to full blocking; it determines switching losses in hard-switched topologies like PFC or boost converters."},{"question":"Can I replace STTH20L03CT with STTH20L03D?","answer":"The STTH20L03D is a single-diode version in a TO-220AC package, while the STTH20L03CT is a dual common-cathode pair in a TO-220AB (3-lead) package. They are not pin-compatible; the CT version replaces two discrete diodes in one package, saving board space."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STTH20L03CT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STTH20L03CT 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}}