PRODUCTION ENGINEERING MEASURE FOR COLUMBIUM CAPACITORS.
Abstract
A discussion is presented of the effort being made to obtain more capacitance from columbium pellets. Three approaches are being studied. The effect of the amout of oxygen present in a columbium pellet before anodization on the quality of the finished capacitor was investigated and found to be negligible. Another investigation revealed that a definite relationship exists between electrolyte composition and per cent dissipation factor and leakage current. Study also resulted in an optimum reanodization voltage for the 35 V rating, and it indicated a relationship between the composition of reanodization electrolyte and leakage current levels on finished capacitors. It was found that the present anodization temperature range and the present electrolyte rinse times are satisfactory. A new method of MnO2 deposition was developed. The reanodization tank was redesigned, and an improved aging facility was established. Seventeen experimental runs of 22 micron f-35 V capacitors have indicated a progressive lowering of leakage current and per cent dissipation factor levels. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 26, 1963
- Accession Number
- AD0433092
Entities
People
- A. Whitman
- E. E. Holley
- J. H. D. Folster
Organizations
- Sprague Electric