{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FERD40U50CFP","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"FERD40U50CFP","canonicalUrl":"https://icboms.com/stmicroelectronics/FERD40U50CFP","factsUrl":"https://icboms.com/api/mcp/products/FERD40U50CFP","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics FERD40U50CFP, FERD (Field Effect Rectifier Diode) array, 50 V reverse voltage, 20 A average rectified per diode, 490 mV forward voltage at 20 A, fast recovery ≤500 ns, 1 pair common cathode, TO-220-3 Full Pack (TO-220FPAB), through-hole mount, tube, RoHS3 compliant.","salesMarkdown":"## 50 V, 20 A dual FERD — low Vf trade-off in a full-pack The FERD structure delivers a forward voltage of 490 mV at 20 A — lower than a conventional Schottky at the same current — but with a higher reverse leakage of 800 µA at the 50 V maximum. The fast recovery rating (≤500 ns, >200 mA) places this part in line-frequency rectification and output OR-ing roles, not high-frequency switching above a few tens of kilohertz. ## Conduction loss and leakage — the FERD compromise At 20 A per diode, the 490 mV Vf (max) sets a conduction loss of about 9.8 W per diode at full load. The common-cathode pair in a single TO-220FP package shares the same heatsink tab, so the total dissipation for both diodes running at 20 A each is nearly 20 W — well within the full-pack's thermal capability when mounted to a suitable heatsink. The 800 µA reverse leakage at 50 V is the price for the low Vf. At elevated junction temperatures, leakage rises exponentially; design the thermal path so the junction stays well below 175°C under worst-case load and ambient conditions to avoid thermal runaway in a high-voltage, high-current rail.","metaTitle":"ST FERD40U50CFP FERD Rectifier, 50V, 20A, TO-220FPAB","metaDescription":"ST FERD40U50CFP dual common-cathode FERD rectifier: 50V Vr, 20A per diode, 490mV Vf at 20A, 800µA leakage. TO-220FPAB full-pack. Active, RoHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Package":"Tube","Diode Type":"FERD (Field Effect Rectifier Diode)","Mounting Type":"Through Hole","Package / Case":"TO-220-3 Full Pack","lifecycle_stage":"eol_hot","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-220FPAB","Current - Reverse Leakage @ Vr":"800 µA @ 50 V","Voltage - DC Reverse (Vr) (Max)":"50 V","Operating Temperature - Junction":"175°C (Max)","Voltage - Forward (Vf) (Max) @ If":"490 mV @ 20 A","Current - Average Rectified (Io) (per Diode)":"20A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.82","priceTiers":[{"qty":1,"price":"$1.82000","currency":"USD"},{"qty":10,"price":"$1.50800","currency":"USD"},{"qty":100,"price":"$1.20040","currency":"USD"},{"qty":500,"price":"$1.01574","currency":"USD"},{"qty":1000,"price":"$0.86183","currency":"USD"},{"qty":2000,"price":"$0.81874","currency":"USD"},{"qty":5000,"price":"$0.78796","currency":"USD"},{"qty":10000,"price":"$0.76188","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/FERD40U50CFP/alternatives.json"},"ai":{"faq":[{"question":"Is FERD40U50CFP RoHS compliant?","answer":"Yes, it is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/FERD40U50CFP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/FERD40U50CFP when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}