DIN EN 61240:2013 压电装置.频率控制和选择用表面安装装置(SMD)框图的制备.通用规则(IEC 61240-2012).德文版本EN 61240-2012
Piezoelectric devices - Preparation of outline drawings of surface-mounted devices (SMD) for frequency control and selection - General rules (IEC 61240:2012); German version EN 61240:2012