scope:

Applies to piezoelectric filters as custom built products or as standard catalogus items and whose quality is assessed on the basis of capacbility approval. It prescribes the preferred ratings and characteristics, with the appropriate tests and measuring methods contained in the generic specification EN 167000, and gives the general performance requirements to be used in detail specifications for piezoelectric filters. The concept of preferred values is directly applicable to standard catalogue items but does not necessarily apply to custom built products.