IEC 60642-2:1994

Piezoelectric ceramic resonator units - Part 2: Guide to the use of piezoelectric ceramic resonator units

IEC 60642:1979/AMD1:1992

Amendment 1 - Piezoelectric ceramic resonators and resonator units for frequency control and selection - Chapter I: Standard values and conditions - Chapter II: Measuring and test conditions

IEC 60642-3:1992

Piezoelectric ceramic resonators - Part 3: Standard outlines

IEC 60642:1979

Piezoelectric ceramic resonators and resonator units for frequency control and selection - Chapter I: Standard values and conditions - Chapter II: Measuring and test conditions