The effects of substrate composition on thick film circuit reliability
Abstract
The viscosity of the resistor glass was measured as a function of dissolved AlSiMag 614 substrate from the softening point to the annealing point of the glasses. The isothermal viscosity was found to increase by a factor of 20 for glass with 10w/o dissolved substrate relative to the standard lead borosilicate glass. The sheet resistances and hot and cold TCRs of thick film resistors were determined as a function of glass composition at seven firing temperatures. These results indicate a retardation of microstructure development in the resistors as the amount of dissolved substrate increases.
- Publication:
-
Quarterly Report
- Pub Date:
- August 1978
- Bibcode:
- 1978puwl.rept......
- Keywords:
-
- Circuit Reliability;
- Concentration (Composition);
- Electrical Resistivity;
- Glass;
- Resistors;
- Substrates;
- Thick Films;
- Aluminum Compounds;
- Ceramics;
- Microstructure;
- Silicon Compounds;
- Viscosity;
- Electronics and Electrical Engineering