NF RESISTOR FACTORIAL LOAD LIFE TEST
CORNING GLASS WORKS BRADFORD PA
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Preparation of a test design was continued for the purpose of performing a factorial load life test on hermetically sealed glass NF resistors. Failure rate data and acceleration factor data are to be obtained on 22,000 hermetically sealed tin-oxide resistors subjected to temperatures of 75, 100 and 125 C and power dissipating levels of up to 4 times their normal rated power for 2000 hrs. Some 450 resistors are to be tested at 70 C for 10,000 hrs at their rated power. Test equipment includes an automatic data handling system, a card punching machine and a digital computer.