{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"GBU8K-E3/45","brand":"Vishay","brandSlug":"vishay","productSlug":"GBU8K-E3-45","canonicalUrl":"https://icboms.com/vishay/GBU8K-E3-45","factsUrl":"https://icboms.com/api/mcp/products/GBU8K-E3%2F45","rawCanonicalId":null},"summary":{"shortDescription":"Vishay GBU8K-/45, Single Phase Bridge Rectifier, Standard Technology, 800 V Peak Reverse, 3.9 A Average, 1 V Forward at 8 A, Through Hole 4-SIP GBU Package, -55°C to 150°C Junction, Tube.","salesMarkdown":"## 800 V bridge in a standard GBU footprint The GBU8K-E3/45: The GBU8K-/45: The Vishay GBU8K-/45 is a single-phase bridge rectifier using standard silicon technology, housed in the industry-standard 4-SIP GBU through-hole package. It delivers an average rectified output current of 3.9 A and is rated for a peak repetitive reverse voltage of 800 V — a common selection for universal-input AC-DC power stages up to 480 VAC line. The forward voltage spec of 1 V at 8 A gives a reasonable conduction-loss baseline for heatsink sizing in continuous-duty supplies, motor-drive auxiliary rails, and battery chargers. ## Junction temperature rating sets the thermal boundary The 150°C upper limit is the key number for power dissipation calculations — at 3.9 A average with a typical forward drop, the I²R losses dictate whether a standalone GBU package can free-air cool or needs a clip-on heatsink. The -55°C floor means it handles cold-start in outdoor telecom cabinets and unheated equipment shelters without derating. ## Reverse leakage at rated voltage Maximum reverse leakage current is 5 µA at the full 800 V reverse voltage. This is a standard-recovery bridge — no fast-recovery or soft-recovery characteristics — so it is suited for 50/60 Hz line rectification rather than high-frequency switching stages. The low leakage helps maintain efficiency in light-load or standby conditions where the bridge is still biased but delivering minimal output current. ## Package and mounting — GBU SIP with tube delivery The through-hole mounting suits wave-solder assembly or hand-rework in prototype and repair scenarios. The GBU footprint is shared across the entire GBU8K voltage family — a board laid out for the 600 V, 800 V, or 1000 V variant accepts this part pin-for-pin, which simplifies voltage-derating upgrades without a PCB revision. ROHS3 compliant — no exemptions that would trigger a restricted-materials review for EU or California-market products. No PCN or successor part is cited in the current data, so this remains the direct orderable part for new and sustaining production.","metaTitle":"GBU8K-E3/45 Bridge Rectifier, 800 V, 3.9 A, Through-Hole GBU","metaDescription":"Vishay GBU8K-E3/45 single-phase bridge rectifier: 800 V peak reverse, 3.9 A average, 1 V forward drop at 8 A.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Signal Isolation"],"specifications":{"Package":"Tube","Diode Type":"Single Phase","Technology":"Standard","Mounting Type":"Through Hole","Package / Case":"4-SIP, GBU","lifecycle_stage":"eol_hot","Operating Temperature":"-55°C ~ 150°C (TJ)","Supplier Device Package":"GBU","Voltage - Peak Reverse (Max)":"800 V","Current - Reverse Leakage @ Vr":"5 µA @ 800 V","Current - Average Rectified (Io)":"3.9 A","Voltage - Forward (Vf) (Max) @ If":"1 V @ 8 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.04","priceTiers":[{"qty":1,"price":"$2.14000","currency":"USD"},{"qty":10,"price":"$1.92100","currency":"USD"},{"qty":100,"price":"$1.54430","currency":"USD"},{"qty":500,"price":"$1.26882","currency":"USD"},{"qty":1000,"price":"$1.12860","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/518f0279b12a92fdbc6ce09bc2427078.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/GBU8K-E3%2F45/alternatives.json"},"ai":{"faq":[{"question":"Is GBU8K-/45 the same as GBU8K?","answer":"The GBU8K-/45 is the Vishay order code for the GBU8K electrical rating in the GBU package, with the /45 suffix specifying tube packaging. The bare GBU8K designation refers to the same 800 V, 3.9 A die; the /45 variant is the tube-delivered version. The datasheet electrical characteristics are identical between the two packaging suffixes."},{"question":"Is GBU8K-/45 lead-free and RoHS compliant?","answer":"Yes, it is ROHS3 compliant, meaning no restricted substances above the exempted thresholds. The part is lead-free and suitable for RoHS-regulated production lines."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/GBU8K-E3-45","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/GBU8K-E3-45 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}}