{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MBRB1045-E3/81","brand":"Vishay","brandSlug":"vishay","productSlug":"MBRB1045-E3-81","canonicalUrl":"https://icboms.com/vishay/MBRB1045-E3-81","factsUrl":"https://icboms.com/api/mcp/products/MBRB1045-E3%2F81","rawCanonicalId":null},"summary":{"shortDescription":"Vishay MBRB1045-/81 Schottky rectifier diode, 45 V reverse, 10 A average, 840 mV forward drop at 20 A, TO-263AB (D²PAK) surface-mount package.","salesMarkdown":"The MBRB1045-E3/81: The MBRB1045-/81: The Vishay MBRB1045-/81 is a 45 V, 10 A Schottky rectifier in a TO-263AB (D²PAK) surface-mount package. It is built for low forward voltage drop — 840 mV maximum at 20 A — which keeps conduction losses down in high-current rectification, OR-ing, and freewheeling applications. The 45 V reverse voltage rating gives headroom for 24 V and 28 V rails, but in a 48 V bus you are at the edge — derate accordingly. The 10 A average rectified current is the continuous rating; the 20 A test point for Vf shows the diode can handle repetitive peaks if the thermal path is solid. ## Reverse leakage and junction temperature — the hidden thermal load Reverse leakage is 100 µA at 45 V. At the 150 °C junction limit leakage climbs significantly. The junction temperature range spans -65°C to 150°C, which covers industrial and most automotive under-hood environments. The wide cold-end margin is typical for Schottky diodes and matters for cold-start surge conditions. ## Package and rework — the D²PAK reality TO-263AB (D²PAK) is a surface-mount package with a large exposed tab on the bottom. The tab is the cathode and the primary thermal path. Rework is straightforward with hot air: preheat the board to 125 °C, hit the tab with a focused nozzle at 300 °C, and lift the part when the solder on all three terminals flows. The tab takes the most heat — starve it and the part stays stuck.","metaTitle":"MBRB1045-E3/81 Schottky Diode, 45V 10A, TO-263AB (D²PAK)","metaDescription":"MBRB1045-E3/81 Schottky rectifier, 45V reverse, 10A average, 840mV forward drop at 20A. Active, 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":"Schottky","Mounting Type":"Surface Mount","Package / Case":"TO-263-3, D²Pak (2 Leads + Tab), TO-263AB","lifecycle_stage":"eol_hot","Supplier Device Package":"TO-263AB (D²PAK)","Current - Reverse Leakage @ Vr":"100 µA @ 45 V","Voltage - DC Reverse (Vr) (Max)":"45 V","Current - Average Rectified (Io)":"10A","Operating Temperature - Junction":"-65°C ~ 150°C","Voltage - Forward (Vf) (Max) @ If":"840 mV @ 20 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.19","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.19000","currency":"USD"},{"qty":10,"price":"$1.06300","currency":"USD"},{"qty":100,"price":"$0.82920","currency":"USD"},{"qty":800,"price":"$0.68496","currency":"USD"},{"qty":1600,"price":"$0.56116","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/eb2999a7a987c716ffa84b8cf7344d39.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the reverse leakage current of MBRB1045-/81 at 45V?","answer":"Reverse leakage is 100 µA maximum at 45 V, specified at 25 °C. Leakage rises with junction temperature — expect significantly higher current at 125 °C or above."},{"question":"Is MBRB1045-/81 RoHS compliant?","answer":"Yes, it is ROHS3 compliant, meaning it meets the latest RoHS exemption rules including for lead in high-melting-temperature solders."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/MBRB1045-E3-81","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/MBRB1045-E3-81 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}}