This publication also bears a QC number. This number, QC 301900 is the specification number in the IEC Quality Assessment System for Electronic Components (IECQ). Applicable to fixed unencapsulated multilayer chip capacitors of ceramic dielectric Class 1 and Class 2, with a rated voltage normally not exceeding 200V, for use in electronic equipment. These capacitors have metallized connecting pads or soldering strips and are intended to be mounted directly on to substrates for hybrid circuits or on to printed boards.