RESISTORS, FIXED FILM TYPE GENERAL PURPOSE
Abstract
An e periment was run to evaluate the effect of the protective carbon alloy coating upon performance of molded units. Four ranges were tested for 500 hrs at 175 C no load. The results indicate that this coating is effective in improving 175 C no load performance in the higher ranges only. However, the application of this coating causes very high and unpredictable changes in initial resistance which invalidates its use for production. Subassemblies were sprayed with a thin Teflon coating prior to molding to isolate possible mechanical effect of the mold jacket. Four ranges were tested at 175 C no load, 100 C load life nd moi ture cycle. The results indicated that the Teflon coating had no affect upon performance. Pre-production testing was completed for the RC-20 size in all ranges. Pre-production testing was completed for 3 ranges of the RC-07 style. The approximate nominal resistance values are 500, 1000, and 5000 ohms. All tests were passed successfully. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1961
- Accession Number
- AD0277675
Entities
People
- Jerome G. Burns