Environmental and Life Testing of High Reliability Magnetic Components

Over 2.5 million hours of life test have been accumulated in the process of manufacturing High Reliability Magnetic Components for Missile and Space Programs. These units were manufactured under a High Reliability Program and were subjected to qualification and acceptance tests as required by the customer's specifications. The compiled life hours is composed of twenty-five electrical specifications and includes Power Transformers, Inductors, and Audio Transformers. Documentation of test records by serialization provides a complete history of each unit. This paper will discuss the results of the testing programs and the effects of environment upon the design of the component, also the effect of extended life test on the operation of the units.