Aspects of activity of IEC technical committee no.49 "piezoelectric and dielectric devices for frequency control and selection"

This paper briefly describes the evolution attained in IEC/TC 49 during 30 years of its activity aimed at ever growing industry needs satisfaction, explains the procedure used in preparing IECQ specifications, gives certain details on IEC Standards development by using quartz crystal units as an example, shows the scientific approach used for documents preparation and gives the tasks for further activity.