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BS EN 61240:2017

BS EN 61240:2017

$142.49

Piezoelectric devices. Preparation of outline drawings of surface-mounted devices (SMD) for frequency control and selection. General rules

Published By Publication Date Number of Pages
BSI 2017 24
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This International Standard 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.

PDF Catalog

PDF Pages PDF Title
6 CONTENTS
7 FOREWORD
9 INTRODUCTION
10 1 Scope
2 Normative references
3 Classification of SMD
4 Title of the outline drawing
5 Composition of the outline drawing
5.1 Elements of outline drawings
11 5.2 Outline drawing
5.3 Table of detailed dimensions
5.4 Actual size sketch
5.5 Drawing of terminal land areas
5.6 Terminal lead details
12 Figures
Figure 1 – Illustration of terminal projection zone
13 6 Requirements for terminal leads
7 Requirements for the terminal land area1F
8 Connections of terminal leads
Figure 2 – Example of a terminal land area
14 9 Descriptive notes
17 Annex A (informative) Miniaturized leadless ceramic enclosures of piezoelectric devices (SMD) for frequency control and selection
A.1 Precise drawing
Figure A.1 – Upper part of the view from above
Tables
Table A.1 – Scale of drawings
18 Figure A.2 – Front view (without a board)
Figure A.3 – Front view (with a board)
Table A.2 – Guideline for dimension table
19 A.2 Requirements for enclosures with 3 terminals
A.3 Naming rule for new type of enclosures
Table A.3 – Guideline for column “Max.” of Table A.2 for A, B
20 Table A.4 – Examples of correspondence between new and old enclosures
21 Annex B (informative) Example of terminal connections for surface-mounted piezoelectric devices (SMD) for frequency control and selection
Table B.1 – Examples of terminal connections for various types of piezoelectric devices
22 Bibliography

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BS EN 61240:2017
$142.49