IEC 60758:2016
(Main)Synthetic quartz crystal - Specifications and guidelines for use
Synthetic quartz crystal - Specifications and guidelines for use
IEC 60758:2016 applies to synthetic quartz single crystals intended for manufacturing piezoelectric elements for frequency control, selection and optical applications. This edition includes the following significant technical changes with respect to the previous edition:
- order rearrangement and review of terms and definitions;
- abolition as a standard of the infrared absorbance coefficient α3410;
- addition of the value measurement explanation by FT-IR equipment in annex;
- addition of the synthetic quartz crystal standards for optical applications.
Cristal de quartz synthétique - Spécifications et lignes directrices d'utilisation
L'IEC 60758:2016 s'applique aux monocristaux de quartz synthétique destinés à être utilisés pour la fabrication d'éléments piézoélectriques pour la commande et le choix de la fréquence, ainsi que les applications optiques.
Cette cinquième édition annule et remplace la quatrième édition parue en 2008. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- réorganisation et révision des termes et définitions;
- suppression du coefficient d'absorption dans l'infrarouge α3410 comme norme;
- ajout en annexe d'une explication pour la mesure de la valeur a par les équipements IRTF;
- ajout des normes relatives au cristal de quartz synthétique à usage optique.
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IEC 60758 ®
Edition 5.0 2016-05
INTERNATIONAL
STANDARD
Synthetic quartz crystal – Specifications and guidelines for use
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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About the IEC
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International Standards for all electrical, electronic and related technologies.
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IEC 60758 ®
Edition 5.0 2016-05
INTERNATIONAL
STANDARD
Synthetic quartz crystal – Specifications and guidelines for use
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.140 ISBN 978-2-8322-3395-5
– 2 – IEC 60758:2016 © IEC 2016
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references. 9
3 Terms and definitions . 9
4 Specification for synthetic quartz crystal . 13
4.1 Standard values . 13
4.1.1 Shape of synthetic quartz for optical applications . 13
4.1.2 Orientation of the seed . 13
4.1.3 Inclusion density . 13
4.1.4 Striae in synthetic quartz for optical applications . 14
4.1.5 Infrared quality indications of α and α for piezoelectric
3 500 3 585
applications . 14
4.1.6 Grade classification by α value and Schlieren method for optical
applications . 15
4.1.7 Frequency-temperature characteristics of synthetic quartz for
piezoelectric applications . 15
4.1.8 Etch channel density ρ . 15
4.1.9 Internal transmittance for optical applications . 16
4.2 Requirements and measuring methods . 17
4.2.1 Orientation . 17
4.2.2 Handedness . 18
4.2.3 Synthetic quartz crystal dimensions . 18
4.2.4 Seed dimensions . 19
4.2.5 Imperfections . 19
4.2.6 Evaluation of infrared quality by α measurement . 22
4.2.7 Frequency versus temperature characteristics for piezoelectric
applications . 24
4.2.8 Striae in synthetic quartz for optical applications . 25
4.2.9 Growth band in synthetic quartz for optical applications . 25
4.2.10 Etch channel density . 26
4.2.11 Internal transmittance for optical applications . 27
4.3 Marking . 27
4.3.1 General . 27
4.3.2 Shipping requirements . 28
5 Specification for lumbered synthetic quartz crystal . 28
5.1 Standard values . 28
5.1.1 Tolerance of dimensions . 28
5.1.2 Reference surface flatness . 29
5.1.3 Angular tolerance of reference surface . 29
5.1.4 Centrality of the seed . 30
5.2 Requirements and measuring methods . 31
5.2.1 As-grown quartz bars used for lumbered quartz bars . 31
5.2.2 Dimensions of lumbered synthetic quartz crystal . 31
5.2.3 Identification on reference surface . 31
5.2.4 Measurement of reference surface flatness . 31
5.2.5 Measurement of reference surface angle tolerance . 31
5.2.6 Centrality of the seed . 31
5.3 Delivery conditions . 32
5.3.1 General . 32
5.3.2 Marking . 32
5.3.3 Packing . 32
5.3.4 Making batch . 32
6 Inspection rule for synthetic quartz crystal and lumbered synthetic quartz crystal . 32
6.1 Inspection rule for as-grown synthetic quartz crystal . 32
6.1.1 Inspection . 32
6.1.2 Lot-by-lot test . 32
6.2 Inspection rule for lumbered synthetic quartz crystal . 33
6.2.1 General . 33
6.2.2 Lot-by-lot test . 34
7 Guidelines for the use of synthetic quartz crystal for piezoelectric applications . 34
7.1 General . 34
7.1.1 Overview . 34
7.1.2 Synthetic quartz crystal . 34
7.2 Shape and size of synthetic quartz crystal . 35
7.2.1 Crystal axis and face designation . 35
7.2.2 Seed . 36
7.2.3 Shapes and dimensions . 36
7.2.4 Growth zones . 37
7.3 Standard method for evaluating the quality of synthetic quartz crystal . 37
7.4 Other methods for checking the quality of synthetic quartz crystal . 38
7.4.1 General . 38
7.4.2 Visual inspection . 38
7.4.3 Infrared radiation absorption method . 38
7.4.4 Miscellaneous . 39
7.5 α grade for piezoelectric quartz . 40
7.6 Optional grading (only as ordered), in inclusions, etch channels, Al content . 40
7.6.1 Inclusions . 40
7.6.2 Etch channels . 40
7.6.3 Al content . 40
7.6.4 Swept quartz . 41
7.7 Ordering . 42
Annex A (informative) Frequently used sampling procedures . 43
A.1 Complete volume counting . 43
A.2 Commodity Y-bar sampling – Method 1 . 43
A.3 Commodity Y-bar sampling – Method 2 . 43
A.4 Use of comparative standards for 100 % crystal inspection . 44
Annex B (informative) Numerical example . 45
Annex C (informative) Example of reference sample selection . 46
Annex D (informative) Explanations of point callipers . 47
Annex E (informative) Infrared absorbance α value compensation . 48
E.1 General . 48
E.2 Sample preparation, equipment set-up and measuring procedure . 48
E.2.1 General . 48
– 4 – IEC 60758:2016 © IEC 2016
E.2.2 Sample preparation . 48
E.2.3 Equipment set-up . 48
E.2.4 Measurement procedure . 49
E.3 Procedure to establish correction terms . 49
E.4 Calculation of compensated (corrected) absorbance values . 51
Annex F (informative) Differences of the orth
...
IEC 60758 ®
Edition 5.0 2016-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Synthetic quartz crystal – Specifications and guidelines for use
Cristal de quartz synthétique – Spécifications et lignes directrices d'utilisation
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
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ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
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IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.
IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
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IEC 60758 ®
Edition 5.0 2016-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Synthetic quartz crystal – Specifications and guidelines for use
Cristal de quartz synthétique – Spécifications et lignes directrices d'utilisation
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.140 ISBN 978-2-8322-5053-2
– 2 – IEC 60758:2016 © IEC 2016
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 9
4 Specification for synthetic quartz crystal . 13
4.1 Standard values . 13
4.1.1 Shape of synthetic quartz for optical applications . 13
4.1.2 Orientation of the seed . 13
4.1.3 Inclusion density . 13
4.1.4 Striae in synthetic quartz for optical applications . 14
4.1.5 Infrared quality indications of α and α for piezoelectric
3 500 3 585
applications . 14
4.1.6 Grade classification by α value and Schlieren method for optical
applications . 15
4.1.7 Frequency-temperature characteristics of synthetic quartz for
piezoelectric applications . 15
4.1.8 Etch channel density ρ. 15
4.1.9 Internal transmittance for optical applications . 16
4.2 Requirements and measuring methods . 17
4.2.1 Orientation . 17
4.2.2 Handedness . 18
4.2.3 Synthetic quartz crystal dimensions . 18
4.2.4 Seed dimensions . 19
4.2.5 Imperfections . 19
4.2.6 Evaluation of infrared quality by α measurement . 22
4.2.7 Frequency versus temperature characteristics for piezoelectric
applications . 24
4.2.8 Striae in synthetic quartz for optical applications . 25
4.2.9 Growth band in synthetic quartz for optical applications . 25
4.2.10 Etch channel density . 26
4.2.11 Internal transmittance for optical applications . 27
4.3 Marking . 27
4.3.1 General . 27
4.3.2 Shipping requirements . 28
5 Specification for lumbered synthetic quartz crystal . 28
5.1 Standard values . 28
5.1.1 Tolerance of dimensions . 28
5.1.2 Reference surface flatness . 29
5.1.3 Angular tolerance of reference surface . 29
5.1.4 Centrality of the seed. 30
5.2 Requirements and measuring methods . 31
5.2.1 As-grown quartz bars used for lumbered quartz bars . 31
5.2.2 Dimensions of lumbered synthetic quartz crystal . 31
5.2.3 Identification on reference surface . 31
5.2.4 Measurement of reference surface flatness . 31
5.2.5 Measurement of reference surface angle tolerance . 31
5.2.6 Centrality of the seed. 31
5.3 Delivery conditions . 32
5.3.1 General . 32
5.3.2 Marking . 32
5.3.3 Packing . 32
5.3.4 Making batch . 32
6 Inspection rule for synthetic quartz crystal and lumbered synthetic quartz crystal . 32
6.1 Inspection rule for as-grown synthetic quartz crystal . 32
6.1.1 Inspection . 32
6.1.2 Lot-by-lot test . 32
6.2 Inspection rule for lumbered synthetic quartz crystal . 33
6.2.1 General . 33
6.2.2 Lot-by-lot test . 34
7 Guidelines for the use of synthetic quartz crystal for piezoelectric applications . 34
7.1 General . 34
7.1.1 Overview . 34
7.1.2 Synthetic quartz crystal . 34
7.2 Shape and size of synthetic quartz crystal . 35
7.2.1 Crystal axis and face designation . 35
7.2.2 Seed . 36
7.2.3 Shapes and dimensions . 36
7.2.4 Growth zones . 37
7.3 Standard method for evaluating the quality of synthetic quartz crystal . 37
7.4 Other methods for checking the quality of synthetic quartz crystal. 38
7.4.1 General . 38
7.4.2 Visual inspection .
...
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