Patent ID: 6399012
Filing Date: 2002-06-04
Classification: C04B,H01C

Abstract:
A method of producing passive devices comprising the steps of pressing ceramic powder to provide device bodies, sintering the device bodies, depositing outer electrodes onto the device bodies, and firing the outer electrodes,the device bodies are sintered by irradiation with microwave radiation in which the temperature of the device bodies is increased in a ramping stage to a maximum temperature in the range of 1000Â° C. to 1300Â° C. and is then maintained at substantially the maximum temperature; and the time duration for both the ramping stage and maintenance of the temperature at substantially the maximum temperature is in the range of 120 minutes to 180 minutes; at least one thousand device bodies are mounted within the container including insulating outer walls and internal heat distribution rods, and the container is irradiated with said microwave radiation.