METHOD OF SORTING MONOLITHIC CERAMIC CAPACITORS BY MEASURING THE INSULATION RESISTANCE THEREOF

摘要

A SORTING METHOD OF MONOLITHIC CERAMIC CAPACITORS IN WHICH HIGH RELIABLE SORTING CAN BE EFFICIENTLY ACHIEVED BASED ON MEASURING AN INSULATING RESISTANCE INVOLVES FIRST PERFORMING A BUN-IN PROCESS, WHICH APPLIES NOT LESS THAN DOUBLE OF THE RATED VOLTAGE AT THE MAXIMUM WORKING TEMPERATURE TO A MONOLITHIC CERAMIC CAPACITOR. THEREAFTER, A HIGH TEMPERATURE INSULATION RESISTANCE MEASURING PROCESS, WHICH INVOLVES MEASURING AN INSULATION RESISTANCE WHILE APPLYING NOT LESS THAN THE RATED VOLTAGE AT A TEMPERATURE OF NOT LESS THAN 70°C. TO THE MONOLITHIC CERAMIC CAPACITOR, IS PERFORMED SO THAT MONOLITHIC CERAMIC CAPACITORS HAVING ABNORMAL INSULATION RESISTANCES ARE ELIMINATED. PREFERABLY, THE DIRECTION OF APPLIED VOLTAGE IN THE BURN-IN PROCESS AGREES WITH THE DIRECTION OF APPLIED VOLTAGE IN THE HIGH TEMPERATURE INSULATION RESISTANCE MEASURING PROCESS.