Surface mounted piezoelectric devices for frequency control and selection - Standard outlines and terminal lead connections - Part 2: Ceramic enclosures (IEC 61837-2:2011 + A1:2014); German version EN 61837-2:2011 + A1:2014— 90 стр.
Surface mounted piezoelectric devices for frequency control and selection - Standard outlines and terminal lead connections - Part 2: Ceramic enclosures (IEC 61837-2:2018); German version EN IEC 61837-2:2018— 101 стр.