G5S12010C Power Schottky Diode for Antminer APW11 Power Supply

G5S12010C Silicon Carbide Schottky Diode 1200V 10A – Antminer APW11 PSU Repair

The G5S12010C is a silicon carbide (SiC) power Schottky diode rated at 1,200V reverse voltage and 10A forward current, used in the secondary rectification stage of the Antminer APW11 power supply. SiC Schottky diodes feature zero reverse recovery current and zero forward recovery voltage, eliminating the switching losses that silicon diodes produce at high frequencies. This translates to higher PSU efficiency, lower operating temperatures and longer component life.

Why SiC Diodes Outperform Silicon in Mining PSUs

Conventional silicon rectifier diodes produce a reverse-recovery current spike every time they turn off — wasting energy and generating heat at each switching cycle. At the high frequencies used in modern mining PSUs, these losses add up significantly. The G5S12010C's SiC junction eliminates reverse recovery entirely, producing clean switching transitions regardless of frequency or temperature. This makes it the preferred choice for high-efficiency APW11 designs.

Replacement Procedure

Disconnect mains and discharge all capacitors. Locate the G5S12010C in the secondary rectification stage — typically mounted to a heatsink near the output inductor. Remove mounting hardware, desolder leads, clean through-holes. Install the new device with correct polarity (cathode band), apply thermal compound and secure to the heatsink. Power through a variac and verify correct output voltage and clean switching waveforms.

G5S12010C SiC Diode Specifications

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• APW17 PSU Fault Detection Tester

Repairing APW11 power supplies? Contact us at contact@lys-sz.com for SiC diodes, MOSFETs and all PSU components.

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