EN 60758:2016

Synthetic quartz crystal - Specifications and guidelines for use

IEC 60758:2008(E) applies to synthetic quartz single crystals intended for manufacturing piezoelectric elements for frequency control and selection. This fourth edition cancels and replaces the third edition, published in 2004. This edition constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition: preparation of AT-cut slice sample for etching is changed to make it easier; etch channel grade classification is changed considering request of the user and explanation of quartz axes difference between IEEE and IEC is added as Annex F.

Synthetischer Quarzkristall - Festlegungen und Leitfaden für die Anwendung

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.

Sintetični kremenčev kristal - Specifikacije in smernice za uporabo (IEC 60758:2016)

IEC 60758:2008(E) se uporablja za sintetične kremenčeve kristale, namenjene za proizvodnjo piezoelektričnih elementov za regulacijo in izbiro frekvence. Četrta izdaja razveljavlja in nadomešča tretjo izdajo, objavljeno leta 2004. Ta izdaja je tehnično popravljena izdaja. Vključuje naslednje pomembne tehnične spremembe glede na prejšnjo izdajo: priprava vzorca rezine z rezanjem AT za jedkanje je spremenjena tako, da omogoča lažjo izvedbo, razvrstitev razredov kanalov za jedkanje je spremenjena tako, da upošteva zahteve uporabnika, in dodatek F vključuje pojasnitev razlike pri kremenčevih oseh med standardoma IEEE in IEC.

General Information

• Status: Published
• Publication Date: 22-Sep-2016
• Withdrawal Date: 06-Oct-2019
• ICS: 31.140 - Piezoelectric devices
• Technical Committee: CLC/SR 49 - Piezoelectric and dielectric devices for frequency control and selection
• Drafting Committee: IEC/TC 49 - IEC_TC_49
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 23-Sep-2016
• Completion Date: 23-Sep-2016
• Ref Project: SIST EN 60758:2016 - Synthetic Quartz Crystal - Specifications and guidelines for use (IEC 60758:2016)

Relations

• Replaces: EN 60758:2009 - Synthetic quartz crystal - Specifications and guidelines for use
• Effective Date: 26-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2016
1DGRPHãþD
SIST EN 60758:2009
6LQWHWLþQLNUHPHQþHYNULVWDO6SHFLILNDFLMHLQVPHUQLFH]DXSRUDER,(&

Synthetic Quartz Crystal - Specifications and guidelines for use (IEC 60758:2016)
Cristal de quartz synthétique - Spécifications et lignes directrices d'utilisation
Ta slovenski standard je istoveten z: EN 60758:2016
ICS:
31.140 3LH]RHOHNWULþQHQDSUDYH Piezoelectric devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60758
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2016
ICS 31.140 Supersedes EN 60758:2009
English Version
Synthetic quartz crystal - Specifications and guidelines for use
(IEC 60758:2016)
Cristal de quartz synthétique - Spécifications et lignes Synthetischer Quarzkristall - Festlegungen und Leitfaden
directrices d'utilisation für die Anwendung
(IEC 60758:2016) (IEC 60758:2016)
This European Standard was approved by CENELEC on 2016-06-22. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60758:2016 E
European foreword
The text of document 49/1185/FDIS, future edition 5 of IEC 60758, prepared by IEC/TC 49
“Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control,
selection and detection” was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 60758:2016.
The following dates are fixed:
• latest date by which the document has to be (dop) 2017-04-07
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2019-10-07
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60758:2009.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60758:2016 was approved by CENELEC as a European
Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu
Publication Year Title EN/HD Year

IEC 60068-1 2013 Environmental testing - EN 60068-1 2014
Part 1: General and guidance
IEC 60122-1 2002 Quartz crystal units of assessed quality - EN 60122-1 2002
Part 1: Generic specification
IEC 60410 -  Sampling plans and procedures for - -
inspection by attributes
IEC 61994 Series Piezoelectric and dielectric devices for - -
frequency control and selection - Glossary

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

IEC 60758:2016 © IEC 2016 – 3 –
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 .
...