Tropicalization—Results of Experiments on Sealing Capacitors

Abstract

To test the efficacy of sealing ceramic capacitors against the ingress of moisture and consequent deterioration in its electrical characteristics, capacitors were coated with different materials and of varying thickness and subjected to standard accelerated tests in a humidity chamber. The temperature of the chamber was 60°C. and the humidity over 98 per cent. The adherence of the coating, thickness, uniformity and effect of shape with relation to thickness, to provide effective sealing was studied experimentally. The results of these experiments are given and discussed.