{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"KBU6K-E4/51","brand":"Vishay","brandSlug":"vishay","productSlug":"KBU6K-E4-51","canonicalUrl":"https://icboms.com/vishay/KBU6K-E4-51","factsUrl":"https://icboms.com/api/mcp/products/KBU6K-E4%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay KBU6K-/51 single-phase bridge rectifier, 800 V peak reverse, 6 A average, 1 Vf, 4-SIP KBU package, through hole, ROHS3 compliant.","salesMarkdown":"## What the 6 A and 800 V ratings mean for your power supply The KBU6K-E4/51: Rated 6 A average rectified output (Io) at a 1 V forward drop — at full load the die dissipates 6 W. In a typical 240 VAC off-line supply the 800 V peak reverse (Vrrm) gives a 1.4× margin above the rectified peak, enough to handle normal line surges without avalanche stress. Reverse leakage is only 5 µA at the full 800 V rating, so the die stays cool at idle. ## Package and rework reality — the KBU through-hole footprint The 4-SIP KBU package is a standard through-hole bridge rectifier footprint — four pins in a single in-line row, easy to hand-solder and rework. The through-hole leads anchor the part against vibration better than a surface-mount package in the same power class. Will it survive the hot air? Yes — the molded epoxy body handles typical wave-solder profiles and the thick leads conduct heat away from the junction during rework. Pin 1 is clearly marked by the chamfered corner on the package body, so orientation is unambiguous under a magnifier. Sourced to order against an RFQ through independent and authorized distribution channels.","metaTitle":"Vishay KBU6K-E4/51 Bridge Rectifier, 800V 6A, 4-SIP KBU","metaDescription":"Vishay KBU6K-E4/51 single-phase bridge rectifier, 800 V peak reverse, 6 A average, 1 Vf, ROHS3, active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tray","Diode Type":"Single Phase","Technology":"Standard","Mounting Type":"Through Hole","Package / Case":"4-SIP, KBU","lifecycle_stage":"eol_hot","Operating Temperature":"-50°C ~ 150°C (TJ)","Supplier Device Package":"KBU","Voltage - Peak Reverse (Max)":"800 V","Current - Reverse Leakage @ Vr":"5 µA @ 800 V","Current - Average Rectified (Io)":"6 A","Voltage - Forward (Vf) (Max) @ If":"1 V @ 6 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.82","priceTiers":[{"qty":1,"price":"$4.82000","currency":"USD"},{"qty":10,"price":"$4.33100","currency":"USD"},{"qty":25,"price":"$4.09400","currency":"USD"},{"qty":80,"price":"$3.54825","currency":"USD"},{"qty":250,"price":"$3.36624","currency":"USD"},{"qty":500,"price":"$3.02052","currency":"USD"},{"qty":1000,"price":"$2.83239","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9c525b0ecc438e9f2c1e45de6070c83e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/KBU6K-E4%2F51/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to KBU6K-/51?","answer":"The KBU6 series shares the same 4-SIP KBU footprint, so other KBU6 voltage variants (e.g. KBU6A through KBU6M) are mechanical drop-ins if the voltage rating fits the application."},{"question":"What compliance documentation does Vishay provide for KBU6K-/51?","answer":"ROHS3 compliance is confirmed. Vishay typically provides the RoHS certificate of compliance and the REACH declaration upon request through the supply chain."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/KBU6K-E4-51","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/KBU6K-E4-51 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}}