{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FERD40U45CG-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"FERD40U45CG-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/FERD40U45CG-TR","factsUrl":"https://icboms.com/api/mcp/products/FERD40U45CG-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics FERD40U45CG-TR, FERD (Field Effect Rectifier Diode), 45 V, 20 A per diode, 1 Pair Common Cathode, 460 mV Vf at 20 A, Fast Recovery ≤ 500 ns, D2PAK (TO-263-3), Surface Mount, 175°C Tj max.","salesMarkdown":"## 460 mV forward drop at 20 A — the efficiency floor The STMicroelectronics FERD40U45CG-TR is a dual common-cathode Field Effect Rectifier Diode (FERD) rated 45 V reverse and 20 A average rectified current per diode. The 460 mV maximum forward voltage at 20 A sets the conduction loss per leg — at full load each diode dissipates about 9.2 W, so the D2PAK tab must be soldered to a sufficient copper area to keep the junction below the 175°C absolute maximum. The FERD structure delivers a lower Vf than a conventional fast-recovery diode of similar voltage rating, but the reverse leakage at 45 V is 1.8 mA — higher than a Schottky of comparable current. This is the trade-off: lower forward loss at the expense of higher off-state leakage, which matters most in lightly loaded or high-temperature standby conditions. ## Common-cathode pair in D2PAK — layout and thermal routing The two diodes share a common cathode on the tab, so the D2PAK footprint connects the output rail directly to the large copper pour — the tab is the thermal path. The TO-263-3 (D²Pak) body has two leads plus the tab; the anode pins are on the outer leads. The 0.50 mm pitch of the lead frame is standard for D2PAK, and the package is compatible with standard reflow profiles for a surface-mount assembly. The 45 V reverse rating gives headroom for 24 V rails with transients, but not for 48 V telecom buses — that needs a higher Vr part.","metaTitle":"STMicroelectronics FERD40U45CG-TR FERD Diode, 45V 20A, D2PAK","metaDescription":"ST FERD40U45CG-TR: 45V, 20A per diode common-cathode FERD in D2PAK. 460 mV Vf at 20A, 175°C Tj max. 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":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"FERD (Field Effect Rectifier Diode)","Mounting Type":"Surface Mount","Package / Case":"TO-263-3, D²Pak (2 Leads + Tab), TO-263AB","lifecycle_stage":"eol_hot","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"D2PAK","Current - Reverse Leakage @ Vr":"1.8 mA @ 45 V","Voltage - DC Reverse (Vr) (Max)":"45 V","Operating Temperature - Junction":"175°C (Max)","Voltage - Forward (Vf) (Max) @ If":"460 mV @ 20 A","Current - Average Rectified (Io) (per Diode)":"20A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.04","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.16000","currency":"USD"},{"qty":10,"price":"$1.94200","currency":"USD"},{"qty":100,"price":"$1.56070","currency":"USD"},{"qty":500,"price":"$1.28228","currency":"USD"},{"qty":1000,"price":"$1.19840","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e062a8a829784232d1320c0e4c1bf20a.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/FERD40U45CG-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/FERD40U45CG-TR 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}}