Small size plated through connections in flexible cables
Conference
·
OSTI ID:7254853
The reliability of plated through holes in flexible cables and measurements to assess their quality are described. PTH's as small as 0.33 mm in dia were produced in 50 ..mu..m thick Kapton insulation. To determine the stability of the PTH's, test panels were exposed to flexure, 150/sup 0/C aging, temperature shock, humidity, mechanical shock and vibration, and altitude testing. The current carrying capacity and stability to soldering and unsoldering of the PTH's were also determined. Series resistance measurements were made to determine the quality of PTH's before and after the environmental exposures. Copper thickness of the PTH's measured by the microhm resistance method agreed within about 50 percent with the corresponding thicknesses determined by cross-sectioning. Results in the present study confirm that flexcircuits with small size PTH's can be very reliable for use in complex electronic assemblies and in weapon applications.
- Research Organization:
- Sandia Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- EY-76-C-04-0789
- OSTI ID:
- 7254853
- Report Number(s):
- SAND-76-9191A; CONF-770513-1
- Country of Publication:
- United States
- Language:
- English
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