{"product_id":"d25sb100-25a-1000v-bridge-rectifier-whatsminer-power-supply","title":"D25SB100 25A 1000V Bridge Rectifier for Whatsminer Power Supply","description":"\u003ch2\u003eD25SB100 25A 1000V Bridge Rectifier – High-Current Replacement for Whatsminer Power Supply Repair\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eD25SB100\u003c\/strong\u003e is a \u003cstrong\u003e25 A \/ 1,000 V\u003c\/strong\u003e single-phase bridge rectifier with glass-passivated chip junctions, designed as a direct replacement for the input rectifier stage in \u003cstrong\u003eWhatsminer power supplies\u003c\/strong\u003e. Its compact molded package handles high surge currents (IFSM) while maintaining superior thermal conductivity — critical for PSUs that operate at full load around the clock in mining environments. When this component fails, the PSU loses its ability to convert AC mains to the DC bus voltage, resulting in a completely dead unit.\u003c\/p\u003e\n\u003ch3\u003eWhy Bridge Rectifiers Fail in Mining PSUs\u003c\/h3\u003e\n\u003cp\u003eThe input bridge rectifier in a mining PSU conducts the full mains current on every AC half-cycle, generating significant heat under continuous 24\/7 load. Over time, thermal cycling weakens the die-to-lead bond, and voltage spikes from unstable mains or generator power can exceed the component's surge rating, leading to a shorted or open diode junction. A shorted bridge blows the input fuse immediately; an open junction causes the PSU to output pulsating DC with excessive ripple, which can damage downstream components if not caught quickly.\u003c\/p\u003e\n\u003ch3\u003eReplacement Procedure\u003c\/h3\u003e\n\u003cp\u003eDisconnect the PSU from mains and discharge all capacitors before starting work. The D25SB100 is a four-pin through-hole component — desolder the old unit, clean the through-holes with a solder sucker or wick, and insert the new bridge rectifier with the correct AC and DC polarity markings aligned to the board silkscreen. Solder all four pins with good thermal contact, then verify with a diode-test meter that each of the four internal diodes reads approximately 0.5–0.7 V forward drop and open-circuit in reverse. Power the PSU on a variac and confirm the DC bus voltage rises smoothly before reconnecting to the miner.\u003c\/p\u003e\n\u003ch4\u003eD25SB100 Bridge Rectifier Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eCurrent Rating\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003e25A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003e1000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003ePackage\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eMolded single-phase bridge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eChip Type\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eGlass passivated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eThermal Conductivity\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eSuperior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eSurge Current (IFSM)\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eHigh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eCompatible PSU\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eWhatsminer power supplies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eCondition\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eRelated Whatsminer PSU Repair Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/d25sb80-high-current-glass-passivated-single-phase-bridge-rectifier-avalon-psu-repair\"\u003eD25SB80 Bridge Rectifier – Avalon PSU Repair\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/dfb2560-antminer-bitmain-power-supply-bridge-rectifier-repair\"\u003eDFB2560 Bridge Rectifier – Antminer PSU Repair\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/cvfd20065a-650v-26a-silicon-carbide-schottky-diode-whatsminer-p21d-power-supply-repair\"\u003eCVFD20065A SiC Diode – Whatsminer P21D PSU\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/advanced-hr1001a-mps1745-llc-controller-whatsminer-power-supply-repair\"\u003eHR1001A LLC Controller – Whatsminer PSU Repair\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRepairing Whatsminer PSUs in volume? \u003ca href=\"mailto:contact@lys-sz.com\"\u003eContact us at contact@lys-sz.com\u003c\/a\u003e for component kits and bulk pricing.\u003c\/p\u003e\n\u003cp\u003eWorldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"Default Title","offer_id":43024356376755,"sku":null,"price":0.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/D25SB100-25A-1000V-Bridge-Rectifier-Whatsminer-Power-Supply.webp?v=1774066811","url":"https:\/\/lys-sz.com\/products\/d25sb100-25a-1000v-bridge-rectifier-whatsminer-power-supply","provider":"LYS Shenzhen","version":"1.0","type":"link"}