EN 61240:2017

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Classification of SMD
4 Title of the outline drawing
5 Composition of the outline drawing
6 Requirements for terminal leads
7 Requirements for the terminal land area
8 Connections of terminal leads
9 Descriptive notes
10 References
Annex A (informative) - Miniaturized leadless
        ceramic enclosures of piezoelectric devices
        (SMD) for frequency control and selection
Annex B (informative) - Example of terminal
        connections for surface-mounted piezoelectric
        devices (SMD) for frequency control and
        selection
Bibliography
Annex ZA (normative) - Normative references
         to international publications with their
         corresponding European publications

IEC 61240:2016(E) sets out general rules for drawing all dimensional and geometrical characteristics of a surface-mounted piezoelectric device package (referred to in this document as SMD) in order to ensure mechanical inter-changeability of all outline drawings of the SMDs for frequency control and selection. This edition includes the following significant technical changes with respect to the previous edition:- outline drawings have been changed from three views (top, front and bottom) to that based on ISO layout in the third-angle projection, in which the view from the right has been added to the top, front and bottom views;- reference line and geometrical dimensions of the package for enclosures have been changed for practical use;- information on miniaturized leadless ceramic enclosures of piezoelectric devices (SMD) for frequency control and selection has been included in an annex.