AC Capacitor Failure
Gideon Analytical Laboratories performed failure analysis on ten failed microwave AC capacitors used in microwave applications. The capacitor used as a doubler failed in the circuit by shorting.
The capacitors were Samwha vintage 2100VAC .65uF with 3 percent tolerance with a maximum temperature rating of 85°C. All the capacitors were tested for shorts or opens. The resistance of the integrated resistor (internal and immersed in the dielectric fluid) was measured also.