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Improvement of the mechanical and thermal properties of the metallized polycarbonate capacitor
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kellerman, H. J. |
| Copyright Year | 1977 |
| Description | Changes were studied which enable polycarbonate metallized film capacitors to withstand 500 thermal shock cycles while maintaining electrical characteristic integrity without becoming intermittent, and without losing hermeticity. The task was for metallized polycarbonate film capacitors designed to meet MIL-C-39022/9 and MIL-C-83421/1. The capacitor design improvements implemented were the insertion of a rubber washer between spray cap and end seal and the utilization of a flexible lead assembly. One hundred fifty capacitors incorporating the design improvements were manufactured and subsequently underwent 500 thermal shock cycles. One hundred forty nine capacitors survived the test. Failure analysis revealed that the lone failure was due to a poor solder joint, initially detected in pre-screening tests as having poor dissipation factor and equivalent series resistance measurement readings. |
| File Size | 13519500 |
| Page Count | 194 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19790022303 |
| Archival Resource Key | ark:/13960/t8dg1jd0x |
| Language | English |
| Publisher Date | 1977-08-01 |
| Access Restriction | Open |
| Subject Keyword | Electronics And Electrical Engineering Metal Films Capacitors Polycarbonates Failure Analysis Mechanical Properties Reliability Engineering Thermodynamic Properties Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
