{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"RFN20NS3STL","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"RFN20NS3STL","canonicalUrl":"https://icboms.com/rohm/RFN20NS3STL","factsUrl":"https://icboms.com/api/mcp/products/RFN20NS3STL","rawCanonicalId":null},"summary":{"shortDescription":"ROHM RFN20NS3STL, standard fast recovery diode, 350 V reverse, 20 A average rectified, 35 ns trr, TO-263-3 (D2Pak) surface mount, LPDS package, ROHS3 compliant, active lifecycle.","salesMarkdown":"## 20 A, 350 V fast recovery diode — what the 35 ns trr buys you The ROHM RFN20NS3STL is a standard fast recovery diode rated for 350 V reverse voltage and 20 A average rectified current, with a reverse recovery time of 35 ns. This trr figure places it in the fast-recovery class — under 500 ns at currents above 200 mA — making it suitable for continuous-conduction-mode PFC boost stages and the output rectification stage of a 200-240 VAC input SMPS, where switching losses at 50-100 kHz are dominated by the diode's recovery charge. ## Forward drop and leakage — the thermal budget drivers Maximum forward voltage is 1.35 V at 20 A. Reverse leakage is 10 µA at 350 V — low enough that the leakage contribution to the junction temperature rise is negligible at 150°C maximum junction temperature, but the leakage curve at elevated temperature should be reviewed against the actual operating VR for designs that push close to the 350 V ceiling. ## Package and footprint — D2Pak with LPDS variant code The RFN20NS3STL is supplied in a TO-263-3 (D2Pak) surface-mount package, with ROHM's internal supplier device package code LPDS. The D2Pak footprint is a standard high-current power package with a large copper tab for heatsinking. The LPDS code indicates a specific lead-frame or mold-compound variant — the land pattern should match the standard TO-263-3 pad layout, but the exact package drawing should be used to confirm the tab dimensions and lead coplanarity before committing the PCB. ## Lifecycle and compliance — active, no LTB risk It is ROHS3 compliant, clearing EU regulatory requirements for new designs.","metaTitle":"RFN20NS3STL 350V 20A Fast Recovery Diode, 35 ns trr","metaDescription":"ROHM RFN20NS3STL: 350V, 20A standard fast recovery diode with 35 ns trr. TO-263 (D2Pak) surface mount, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Package":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"Standard","Mounting Type":"Surface Mount","Package / Case":"TO-263-3, D²Pak (2 Leads + Tab), TO-263AB","lifecycle_stage":"eol_hot","Supplier Device Package":"LPDS","Reverse Recovery Time (trr)":"35 ns","Current - Reverse Leakage @ Vr":"10 µA @ 350 V","Voltage - DC Reverse (Vr) (Max)":"350 V","Current - Average Rectified (Io)":"20A","Operating Temperature - Junction":"150°C","Voltage - Forward (Vf) (Max) @ If":"1.35 V @ 20 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.11","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.11000","currency":"USD"},{"qty":10,"price":"$2.79300","currency":"USD"},{"qty":100,"price":"$2.24490","currency":"USD"},{"qty":500,"price":"$1.84442","currency":"USD"},{"qty":1000,"price":"$1.52823","currency":"USD"},{"qty":2000,"price":"$1.47750","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c8eceffc9a5450fe106745b16d9b6c6e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the reverse recovery time of RFN20NS3STL?","answer":"The RFN20NS3STL has a reverse recovery time of 35 ns, which places it in the fast-recovery class (under 500 ns at currents above 200 mA). This 35 ns trr enables operation in continuous-conduction-mode PFC boost stages and SMPS output rectification at switching frequencies up to 100 kHz with manageable recovery losses."},{"question":"Can RFN20NS3STL be used in a high-speed switching power supply?","answer":"Yes. The 35 ns reverse recovery time makes the RFN20NS3STL suitable for the boost diode in a continuous-conduction-mode PFC stage and for output rectification in LLC or phase-shift full-bridge converters operating at 50-100 kHz. The 350 V reverse rating covers the 200-240 VAC input range with margin. The forward drop of 1.35 V at 20 A should be factored into the thermal design for the expected average current."},{"question":"Is RFN20NS3STL RoHS compliant?","answer":"Yes, the RFN20NS3STL is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/RFN20NS3STL","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/RFN20NS3STL 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}}