Characteristics of thick-film resistors, fired under dielectric layer

The evaluation of the QM-90 resistor series, fired either on top of dielectric layers or buried under the dielectric, are presented. The QM 90 series was chosen for the evaluation of the characteristics of buried resistors because it is compatible with silver conductors, which are used for inner electrodes within multilayer circuits. Results show that the QM-90 series resistors can also be used as buried resistors within a multilayer structure if the design of a thick-film circuit allows for relatively wide tolerances of resistivity and increased TCR.