GBJ2010 Antminer APW3 APW7 Whatsminer P21 Power Supply

GBJ2010 Bridge Rectifier | 1000V / 20A Replacement for Antminer APW3 / APW7 & Whatsminer P21 Power Supply Repair

The GBJ2010 is a 1000V / 20A through-hole bridge rectifier used on the Antminer APW3, APW7, and Whatsminer P21 power supplies to convert the mains AC input into rectified DC for the PFC stage downstream. When the GBJ2010 fails — typically shorted through after a transient event or saturated under sustained overcurrent — the result is a dead PSU, blown mains fuse, and often collateral damage on the surrounding primary-side components.

Headline numbers for PSU primary duty: 1kV reverse peak voltage, 20A average rectified current, 1.05V forward drop at 10A, 10µA reverse leakage at 1000V, 240A peak surge overload, and 1500VRMS case dielectric strength. Glass-passivation mold construction with the 4-SIP GBJ outline — through-hole mounting on the PSU primary side, with leads designed to handle the heat-cycling and vibration of sustained mining duty.

When to Replace the GBJ2010

• APW3 / APW7 / P21 PSU dead after a mains transient — bridge rectifier shorted, fuse blew.
• Blown mains fuse on power-up — bridge took the spike, replace fuse + rectifier together.
• Visible damage on the GBJ package — cracking, charring after a high-current fault.
• PSU clicks but doesn't start — partial bridge failure, one or two of four diodes degraded.
• Excessive heat on the bridge body at normal load — forward drop drifted, replace before full failure.

GBJ2010 Bridge Rectifier Specifications

FAQ — GBJ2010 Bridge Rectifier

Q: How do I confirm the bridge is the dead part?
A: Power off, mains-disconnected. DMM diode-test mode between each pair of AC and DC pins. Healthy bridge shows ~0.5V forward across each junction, OL reverse. Shorted reads 0Ω. Open reads OL both directions. Any short across the bridge = replace and inspect for upstream cause (transient, surge).

Q: Always check the mains fuse too?
A: Yes — when the GBJ2010 fails shorted, it usually takes the mains fuse with it. Replace both together. If you replace only the bridge and the fuse is also gone, the new bridge will look dead even though it's fine.

Q: 4-SIP through-hole mounting — rework profile?
A: Standard through-hole rework. Desolder the four leads with a solder sucker or wick, lift the old bridge, install the fresh one matching the AC / DC silkscreen markings on the board, resolder. Verify lead-to-lead continuity matches the GBJ pin-out before re-energising.

Q: Bulk pricing for APW3 / APW7 / P21 PSU repair benches?
A: Yes — email contact@lys-sz.com for tube-quantity GBJ2010 pricing.

Related products

• GBU808 Power Bridge Rectifier 8A
• TVR14511 Surge Protection Varistor (APW12)
• 1N4007 / M7 SMD Rectifier (APW12 PSU)
• Whatsminer P21 PSU Transformer

APW3 / APW7 / P21 PSU repair benches stocking GBJ2010 bridges by the tube? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.