IEC 60122-3:2010

IEC 60122-3 ®
Edition 4.0 2010-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Quartz crystal units of assessed quality –
Part 3: Standard outlines and lead connections

Résonateurs à quartz sous assurance de la qualité –
Partie 3: Encombrements normalisés et connexions des sorties

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.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: 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.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: csc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
ƒ Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
ƒ Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
ƒ Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
ƒ Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: csc@iec.ch
Tél.: +41 22 919 02 11
Fax: +41 22 919 03 00
IEC 60122-3 ®
Edition 4.0 2010-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Quartz crystal units of assessed quality –
Part 3: Standard outlines and lead connections

Résonateurs à quartz sous assurance de la qualité –
Partie 3: Encombrements normalisés et connexions des sorties

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
T
CODE PRIX
ICS 31.140 ISBN 978-2-88912-211-0
– 2 – 60122-3 © IEC:2010
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Guidance for the standardization of outline drawings for frequency control and
selection devices .6
2.1 General .6
3 Dimensions of quartz crystal unit enclosures .7
4 Designation of quartz crystal unit enclosures.8
Bibliography.24

Figure 1 – Guidance for outline drawings .7

Table 1 – Designation of quartz crystal unit enclosures.8

60122-3 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
QUARTZ CRYSTAL UNITS OF ASSESSED QUALITY –

Part 3: Standard outlines and lead connections

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 60122-3 has been prepared by IEC Technical Committee 49:
Piezoelectric, dielectric and electrostatic devices and associated materials for frequency
control, selection and detection.
This fourth edition cancels and replaces the third edition published in 2001. This fourth edition
constitutes a technical revision.
The main changes with respect to the previous edition are as follows:
– 12 of the 48 enclosure types contained in the previous edition have been deleted.

– 4 – 60122-3 © IEC:2010
The text of this standard is based on the third edition and the following documents:
CDV Report on voting
49/886/CDV 49/904/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 of IEC 60122 series, published under the general title, Quartz crystal units of
assessed quality, 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.
60122-3 © IEC:2010 – 5 –
INTRODUCTION
The third edition of IEC 60122-3 (2004) contained 48 enclosure types showing the dimensional
and geometrical characteristics of these enclosures. Since its release, due to progress in
technology, many of the enclosures given in the standard have become obsolete.
Bearing this in mind, the following 12 enclosure types have been deleted from the third edition
of lEC 60122-3.
AA, AB, BC, BC/1, BF, BF/1, CX, CY, CY/1, CZ, DA, DC.
Therefore, this new version (the fourth edition) contains the following 36 enclosure types ; CK,
CM, CN, CP, DK, DL, DP, EH, DQ, DR, DZ, DV, DW, ED, EB, EJ, EK, CU 01A, CU 01B, CU
01C, CU 01D, CU 01E, CU 01F, CU 02A, CU 02B, CU 02C, CU 02D, CU 02E, CU 02F

– 6 – 60122-3 © IEC:2010
QUARTZ CRYSTAL UNITS OF ASSESSED QUALITY –

Part 3: Standard outlines and lead connections

1 Scope
This part of IEC 60122 specifies the outline drawing for quartz crystal units with lead
enclosures.
2 Guidance for the standardization of outline drawings for frequency control
and selection devices
2.1 General
In order to achieve a uniform presentation of all outline drawings for frequency control and
selection devices the following guide shall be considered:
2.2 An outline drawing shall show all dimensional and geometrical characteristics of an
enclosure necessary to ensure mechanical interchangeability with all other enclosures of the
same outline. Enlarged detailed view may be used, if necessary.
2.3 The outline drawing shall consist of three parts:
2.3.1 A drawing with dimensional symbols (capital letter) as shown in Figure 1 below with
applicable notes, if necessary.
2.3.2 A tabular listing relating to the drawing symbols to the actual dimensions. Where
possible this shall be shown on the same page as the drawing.
2.3.3 An "actual-size" sketch (scale 1:1).
2.4 The outline drawing shall be executed in the third angle projection.
2.5 The function and identification of the lead connections (termination) shall be determined
by agreement between the supplier and user. They shall not be defined on the outline drawing.
2.6 Descriptive notes may be used at the bottom of/ or adjacent to, the drawing with proper
reference to the body of the drawing.
2.7 All dimensions shall be in millimeters.
2.8 Outline dimensions A, B, C, D and E shall be listed with maximum values only.
2.9 Lead (termination) cross-sectional dimensions shall be listed with minimum and maximum
values. If applicable, nominal dimensions may be added.
2.10 The spacing of the leads (termination) – symbol H – shall be listed with minimum,
nominal and maximum dimensions.

60122-3 © IEC:2010 – 7 –
E
D
C
Actual size
U
L
W
H
K B
A
IEC 2244 / 03
IEC  2256/10
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A ― ― X
B ― ― X
C ― ― X
D ― ― X
E ― ― X
H X X X
K X ― X 1
L X ― X
U X ― ― 2
W X ― ― 2
NOTE 1 In this sentence, a comment relate
...