A specification in the IEC quality assessment system for electronic components (IECQ) - Quartz crystal units - Part 2: Sectional specification, capability approval; identical with IEC 61178-2:1993
Measurement and test methods for tuning fork quartz crystal units in the range from 10 kHz to 200 kHz and standard values (IEC 60689:2008); German version EN 60689:2009— 20 стр.
