This International Standard relates to piezoelectric ceramic filters with a high selectivity and stability, intended for use in electronic equipment. The object of this standard is to prescribe preferred ratings and characteristics and to select from the Generic Specification (IEC 1261-1) the appropriate Quality Assessment procedures,tests and measuring methods and to give general performance requirements for this type of filter. Test severities and requirements prescribed in detail specifications referring to this sectional specification shall have equal or higher performance level.