EN IEC 60122-4:2019

Quartz crystal units of assessed quality - Part 4: Crystal units with thermistors

This part of IEC 60122 is applicable to crystal units with thermistors mainly used in the field of mobile communication that requires high frequency stability such as local reference signal generator for the mobile phone base station or GPS. This document provides users with technical guidelines of crystal units with thermistors as well as basic knowledge of common crystal units with thermistors.

Schwingquarze mit bewerteter Qualität - Teil 4: Schwingquarze mit Thermistoren

Résonateurs à quartz sous assurance de la qualité - Partie 4: Résonateurs à quartz équipés de thermistances

L'IEC 60122-4:2019 est applicable aux résonateurs à quartz équipés de thermistances utilisés principalement dans le domaine des communications mobiles qui exige une grande stabilité de la fréquence, par exemple des générateurs de signaux de référence locaux pour les stations de base des téléphones mobiles ou un système GPS. Le présent document fournit aux utilisateurs des lignes directrices techniques sur les résonateurs à quartz équipés de thermistances ainsi que des informations fondamentales sur les résonateurs à quartz communs équipés de thermistances.

Kristalne enote določene kakovosti - 4. del: Kristalne enote s termistorji (IEC 60122-4:2019)

Ta del standarda IEC 60122 se uporablja za kristalne enote s termistorji, ki se običajno uporabljajo na področju mobilnih komunikacij, ki zahteva visoko stabilnost frekvence, kot je lokalni referenčni generator signalov za bazno postajo mobilne telefonije ali GPS. Ta dokument uporabnikom zagotavlja tehnične smernice o kristalnih enotah s termistorji kot tudi osnovno znanje glede običajnih kristalnih enot s termistorji.

General Information

• Status: Published
• Publication Date: 21-Mar-2019
• Withdrawal Date: 27-Feb-2022
• 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: 22-Mar-2019
• Completion Date: 22-Mar-2019
• Ref Project: SIST EN IEC 60122-4:2019 - Quartz crystal units of assessed quality - Part 4: Crystal units with thermistors (IEC 60122-4:2019)

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2019
.ULVWDOQHHQRWHGRORþHQHNDNRYRVWLGHO.ULVWDOQHHQRWHVWHUPLVWRUML,(&

Quartz crystal units of assessed quality - Part 4: Crystal units with thermistors (IEC
60122-4:2019)
Schwingquarze mit bewerteter Qualität - Teil 4: Schwingquarze mit Thermistoren (IEC
60122-4:2019)
Résonateurs à quartz sous assurance de la qualité - Partie 4: Résonateurs à quartz
équipés de thermistances (IEC 60122-4:2019)
Ta slovenski standard je istoveten z: EN IEC 60122-4:2019
ICS:
31.140 3LH]RHOHNWULþQHQDSUDYH Piezoelectric devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60122-4

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2019
ICS 31.140
English Version
Quartz crystal units of assessed quality - Part 4: Crystal units
with thermistors
(IEC 60122-4:2019)
Résonateurs à quartz sous assurance de la qualité - Partie Schwingquarze mit bewerteter Qualität - Teil 4:
4: Résonateurs à quartz équipés de thermistances Schwingquarze mit Thermistoren
(IEC 60122-4:2019) (IEC 60122-4:2019)
This European Standard was approved by CENELEC on 2019-02-28. 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: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60122-4:2019 E

European foreword
The text of document 49/1281/CDV, future edition 1 of IEC 60122-4, 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 IEC 60122-4:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-11-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-02-28
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 60122-4:2019 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 61240:2016 NOTE Harmonized as EN 61240:2017 (not modified)
IEC 61760 (series) NOTE Harmonized as EN 61760-4:2015/A1 (series)
IEC 61837 (series) NOTE Harmonized as EN 61837 (series)

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where 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 60027 series Letter symbols to be used in electrical EN IEC 60027 series
technology
IEC 60050-561 -  International Electrotechnical Vocabulary - Part - -
561: Piezoelectric, dielectric and electrostatic
devices and associated materials for frequency
control, selection and detection
IEC 60068 series Environmental testing EN IEC 60068-3 series
IEC 60122-1 2002 Quartz crystal units of assessed quality - Part 1: EN 60122-1 2002
Generic specification
+ A1 2017  + A1 2018
IEC 60122-2-1 -  Quartz crystal units for frequency control and - -
selection - Part 2: Guide to the use of quartz
crystal units for frequency control and selection
- Section One: Quartz crystal units for
microprocessor clock supply
IEC 60444-1 -  Measurement of quartz crystal unit parameters EN 60444-1 -
by zero phase technique in a pi-network - Part
1: Basic method for the measurement of
resonance frequency and resonance resistance
of quartz crystal units by zero phase technique
in a pi-network
IEC 60444-5 -  Measurement of quartz crystal units parameters EN 60444-5 -
- Part 5: Methods for the determination of
equivalent electrical parameters using
automatic network analyzer techniques and
error correction
IEC 60444-9 -  Measurement of quartz crystal unit parameters EN 60444-9 -
- Part 9: Measurement of spurious resonances
of piezoelectric crystal units
IEC 60539-1 2016 Directly heated negative temperature coefficient EN 60539-1 2016
thermistors - Part 1: Generic specification
IEC 60617 series Graphical symbols for diagrams (available at - -
http://std.iec.ch/iec60617)
IEC 63041-1 -  Piezoelectric sensors - Part 1: Generic EN IEC 63041-1 -
specifications
ISO 80000 series Quantities and units  EN ISO 80000 series

IEC 60122-4 ®
Edition 1.0 2019-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Quartz crystal units of assessed quality –

Part 4: Crystal units with thermistors

Résonateurs à quartz sous assurance de la qualité –

Partie 4: Résonateurs à quartz équipés de thermistances

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.140 ISBN 978-2-8322-6457-7

– 2 – IEC 60122-4:2019 © IEC 2019
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions, units and symbols . 6
3.1 Terms and definitions . 6
3.2 Units and symbols. 6
4 Specifications . 6
4.1 General . 6
4.2 Structure of crystal units with thermistors . 7
4.3 Handling of the thermistor . 7
4.4 Shipping requirements . 7
5 Delivery conditions . 8
6 Quality and reliability . 8
Annex A (informative) Effect of frequency stability using crystal units with thermistors . 9
A.1 Object . 9
A.2 Comparison of conventional crystal units with crystal units with thermistors . 9
A.3 Verification test of crystal units with thermistors . 10
A.3.1 Test condition . 10
A.3.2 Test result . 11
A.4 Example of crystal units with thermistors . 12
A.4.1 Structure . 12
A.4.2 Terminal functions . 13
Bibliography . 14

Figure 1 – Block diagrams of the quartz crystal units . 7
Figure A.1 – Conventional crystal oscillator with thermistor . 9
Figure A.2 – Conceptual diagram for crystal units with thermistors . 10
Figure A.3 – Test condition . 11
Figure A.4 – Test result . 12
Figure A.5 – Crystal units with thermistors inside enclosure (side view) . 13
Figure A.6 – Crystal units with thermistors outside enclosure (side view) . 13
Figure A.7 – Typical example of crystal units with thermistors – Terminal functions . 13

IEC 60122-4:2019 © IEC 2019 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
QUARTZ CRYSTAL UNITS OF ASSESSED QUALITY –

Part 4: Crystal units with thermistors

FOREWORD
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