{"product_id":"gbj1508-15a-800v-bridge-rectifier-diode","title":"GBJ1508 15A 800V Glass Passivated Bridge Rectifier Diode for Power Supply","description":"\u003ch2\u003eGBJ1508 Bridge Rectifier Diode | 15A 800V Glass Passivated Bridge for Power Supply Repair\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eGBJ1508\u003c\/strong\u003e is a \u003cstrong\u003e15A 800V single-phase glass-passivated bridge rectifier diode\u003c\/strong\u003e in the GBJ package — the AC-to-DC bridge rectifier on the primary side of most ASIC PSU designs. Replacing the bridge is the standard recovery path when a PSU draws AC input but produces no DC bus voltage (one or more diodes in the bridge are shorted).\u003c\/p\u003e\n\u003cp\u003eThe glass-passivated mold structure provides enhanced durability and environmental protection. \u003cstrong\u003e1500VRMS case dielectric strength\u003c\/strong\u003e, \u003cstrong\u003e240A peak surge overload\u003c\/strong\u003e tolerance, low reverse leakage. Standard PSU primary-side rectifier with strong margin for typical 220-240VAC mining input.\u003c\/p\u003e\n\u003ch3\u003eWhen to Replace the GBJ1508\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePSU draws AC input but DC bus is dead\u003c\/strong\u003e — one or more diodes in the bridge shorted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultimeter diode-test across input\/output\u003c\/strong\u003e shows incorrect drop or short.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisible damage\u003c\/strong\u003e on the bridge body — burnt, cracked, or discolored.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse blew on AC input\u003c\/strong\u003e after surge event — bridge typically the next part to inspect.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eGBJ1508 Bridge Rectifier Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiode Type\u003c\/td\u003e\n\u003ctd\u003eSingle-phase Bridge Rectifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Forward Current (IF)\u003c\/td\u003e\n\u003ctd\u003e15A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Reverse Voltage (VRRM)\u003c\/td\u003e\n\u003ctd\u003e800V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Dielectric Strength\u003c\/td\u003e\n\u003ctd\u003e1500VRMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Overload Rating\u003c\/td\u003e\n\u003ctd\u003eUp to 240A peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReverse Leakage Current\u003c\/td\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eGlass-passivated mold structure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003ePSU primary-side AC rectification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eFAQ — GBJ1508 Bridge Rectifier\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I test the bridge?\u003c\/strong\u003e\u003cbr\u003eA: Power off and discharge the PSU bulk caps. Multimeter in diode-test mode: probe between each AC input pin and each DC output pin. A healthy bridge shows ~0.6-0.7V forward in the proper direction and OL reverse. A shorted diode shows ~0V both ways; an open shows OL both ways. Any failed junction means replace the whole bridge.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I substitute a higher-current bridge?\u003c\/strong\u003e\u003cbr\u003eA: Yes — substituting a 25A or 35A bridge with the same 800V+ rating and same package footprint is safe and gives more thermal margin. Check the mounting hole pattern and pin layout match before placing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: 800V vs 1000V rating — does it matter?\u003c\/strong\u003e\u003cbr\u003eA: For 220-240VAC mining input, 800V is sufficient (peak ~340V × √2 = 480V worst case, well below 800V). 1000V variants offer more margin against transient surges but aren't strictly required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Bulk pricing?\u003c\/strong\u003e\u003cbr\u003eA: Yes — email contact@lys-sz.com for tray-quantity pricing.\u003c\/p\u003e\n\u003ch3\u003eRelated products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/gbj2510-bridge-rectifier-psu-repair\"\u003eGBJ2510 25A Bridge Rectifier (PSU Repair)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/byc15-600p-ultrafast-power-diode-asic-power-supply\"\u003eBYC15-600P Ultrafast Power Diode (ASIC PSU)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mur860f-avalon-1346-crypto-miner-psu3400-power-supply-diode-repair\"\u003eMUR860F Diode (Avalon PSU3400)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/2200uf-16v-radial-electrolytic-capacitor-whatsminer-power-supply-repair\"\u003e2200µF 16V Radial Electrolytic Capacitor (PSU)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePSU repair benches stocking GBJ1508 bridges in volume? Email \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e for bulk pricing. Worldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"Default Title","offer_id":43046116327603,"sku":null,"price":0.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/GBJ1508-800V-Bridge-Rectifier-Diode-Power-Supply.webp?v=1774156171","url":"https:\/\/lys-sz.com\/products\/gbj1508-15a-800v-bridge-rectifier-diode","provider":"LYS Shenzhen","version":"1.0","type":"link"}