EN 60444-8:2017

SLOVENSKI STANDARD
01-junij-2017
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Measurement of quartz crystal unit parameters - Part 8 : Test fixture for surface mounted
quartz crystal units (IEC 60444-8:2016)
Ta slovenski standard je istoveten z: EN 60444-8:2017
ICS:
31.140 3LH]RHOHNWULþQHQDSUDYH Piezoelectric devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60444-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2017
ICS 31.140 Supersedes EN 60444-8:2003
English Version
Measurement of quartz crystal unit parameters -
Part 8 : Test fixture for surface mounted quartz crystal units
(IEC 60444-8:2016)
Mesure des paramètres des résonateurs à quartz -  Messung von Schwingquarz-Parametern -
Partie 8: Dispositif d'essai pour les résonateurs Teil 8: Prüfaufbau für oberflächenmontierbare
à quartz montés en surface Schwingquarze
(IEC 60444-8:2016) (IEC 60444-8:2016)
This European Standard was approved by CENELEC on 2017-01-19. 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, Serbia, 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
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60444-8:2017 E
European foreword
The text of document 49/1126/CDV, future edition 2 of IEC 60444-8, 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 60444-8:2017.
The following dates are fixed:
• latest date by which the document has to be implemented at (dop) 2017-10-19
national level by publication of an identical national
standard or by endorsement
(dow) 2020-01-19
• latest date by which the national standards conflicting with
the document have to be withdrawn

This document supersedes EN 60444-8:2003.
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.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association.
Endorsement notice
The text of the International Standard IEC 60444-8:2016 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60122-1 NOTE Harmonized as EN 60122-1.
IEC 60444-1:1986 NOTE Harmonized as EN 60444-1:1997 (not modified).
IEC 60444-2 NOTE Harmonized as EN 60444-2.
IEC 60444-6 NOTE Harmonized as EN 60444-6.
IEC 60444-7 NOTE Harmonized as EN 60444-7.
IEC 60444-9 NOTE Harmonized as EN 60444-9.
IEC 61837-1 NOTE Harmonized as EN 61837-1.
IEC 61837-2 NOTE Harmonized as EN 61837-2.
IEC 61837-3 NOTE Harmonized as EN 61837-3.
IEC 61837 NOTE Harmonized in EN 61837 series.
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 60444-5 - Measurement of quartz crystal unit EN 60444-5 -
parameters - Part 5: Methods for the
determination of equivalent electrical
parameters using automatic network
analyzer techniques and error correction

IEC 60444-8 ®
Edition 2.0 2016-12
INTERNATIONAL
STANDARD
colour
inside
Measurement of quartz crystal unit parameters –

Part 8: Test fixture for surface mounted quartz crystal units

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.140 ISBN 978-2-8322-3718-2

– 2 – IEC 60444-8:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Specifications . 6
4 Leadless surface mounted quartz crystal units . 6
4.1 Enclosure . 6
4.2 Overtone and frequency range . 7
5 Specifications of measurement method, test fixture . 7
5.1 Specifications of measurement method . 7
5.2 Specifications of transmission test fixture . 7
5.3 Specifications of reflection test fixture . 10
5.4 Measuring equipment . 13
6 Calibration . 13
6.1 Calibration of the transmission test system . 13
6.2 Additional calibration of the transmission test system with C adapter board . 13
L
6.3 Calibration of the reflection measurement system . 13
Bibliography . 15

Figure 1 – Transmission π-network test fixture: Simplified equivalent circuit diagram,
frequency range from 1 MHz to 500 MHz . 7
Figure 2 – Transmission π-network test Fixture with physical load capacitors: simplified
equivalent circuit, frequency range from 1 MHz to 30 MHz . 7
Figure 3 – Transmission π-network test fixture: Three-dimensional projection for the test
fixture . 8
Figure 4 – Transmission π-network test fixture: Mechanical design of the test fixture . 9
Figure 5 – Transmission π-network test fixture with physical load capacitors: Structure
of the test fixture . 10
Figure 6 – Design of the reflection test fixture . 11
Figure 7 – Mechanical details of the reflection test fixture . 13
Figure 8 – Calibration technique for the reflection test fixture . 14

IEC 60444-8:2016 © IEC 2016 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________
MEASUREMENT OF QUARTZ CRYSTAL UNIT PARAMETERS –

Part 8: Test fixture for surface mounted quartz crystal units

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60444-8 has been prepared by IEC technical committee 49:
Piezoelectric, dielectric and electrostatic devices and associated materials for frequency
control, selection and detection.
This second edition cancels and replaces the first edition published in 2003. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) modification of Clause 1;
b) modification of 5.2;
c) modification of 5.3;
d) modification of 5.4;
– 4 – IEC 60444-8:2016 © IEC 2016
e) 6.3 Calibration of the reflection measurement system.
The text of this standard is based on the following documents:
CDV Report on voting
49/1126/CDV 49/1175/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60444 series, published under the general title Measurement of
quartz crystal unit parameters, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
IEC 60444-8:2016 © IEC 2016 – 5 –
INTRODUCTION
...