EN 60679-4:1998

SLOVENSKI STANDARD
01-september-2002
Quartz crystal controlled oscillators of assessed quality - Part 4: Sectional
specification - Capability approval (IEC 60679-4:1997)
Quartz crystal controlled oscillators of assessed quality -- Part 4: Sectional specification -
Capability approval
Quarzoszillatoren mit bewerteter Qualität -- Teil 4: Rahmenspezifikation -
Befähigungsanerkennung
Oscillateurs pilotés par quartz sous assurance de la qualité -- Partie 4: Spécification
intermédiaire - Agrément de savoir-faire
Ta slovenski standard je istoveten z: EN 60679-4:1998
ICS:
31.140 3LH]RHOHNWULþQHLQ Piezoelectric and dielectric
GLHOHNWULþQHQDSUDYH devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME
CEI
INTERNATIONALE
IEC
60679-4
INTERNATIONAL
QC 690100
STANDARD
Première édition
First edition
1997-12
Oscillateurs pilotés par quartz sous assurance
de la qualité –
Partie 4:
Spécification intermédiaire –
Agrément de savoir-faire
Quartz crystal controlled oscillators
of assessed quality –
Part 4:
Sectional specification – Capability approval
 IEC 1997 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE U
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60679-4  IEC:1997 – 3 –
CONTENTS
Page
FOREWORD . 5
Clause
1 General. 9
1.1 Scope . 9
1.2 Normative references. 9
2 Preferred values for ratings and guidance on detail specifications. 9
2.1 Preferred values for ratings and characteristics . 9
2.2 Information to be prescribed in detail specifications . 11
3 Capability approval. 13
3.1 Eligibility for capability approval. 13
3.2 Structural similarity . 13
3.3 Procedures for capability approval. 13
3.4 Capability manual. 15
3.5 Capability qualifying components (CQC). 15
3.6 Inspection requirements for CQCs. 19
3.7 Programme for capability approval . 19
3.8 Capability approval report. 19
3.9 Abstract of description of capability approval . 19
3.10 Modifications likely to affect the capability approval . 21
3.11 Initial capability approval . 21
3.12 Maintenance of capability approval . 49
3.13 Rework and repair work. 51
3.14 Quality conformance inspection. 51
3.15 Screening procedures . 53
4 Test and measurement procedures . 53
Tables
1 Test schedule for initial capability approval . 41
2 Periodic tests for maintenance of capability approval . 51
Figures
1 Selection of CQCs – All methods of construction . 23
2 Test plan for deposition for electrode material CQCs . 25
3 Test plan for bonding CQCs . 27
4 Test plan for component assembly CQCs . 27
5 Test plan for alignment CQCs. 29
6 Test plan for enclosures of CQCs. 31
7 Test plan for mounting CQCs . 31
8 Test plan for frequency, input, output and temperature range CQCs . 33
9 Test plan for frequency/load coefficient, frequency/voltage coefficient,
external frequency adjustment and FM characteristics CQCs . 35
10 Test plans for climatic performance CQCs. 37
11 Test plan for frequency ageing CQCs . 39
Annexes
A Example of layout of an abstract of description of capability approval. 55
B Layout of the front page of a CQC specification for process control. 57
C Layout of the front page of a CQC specification to demonstrate a boundary or limit. 59

60679-4  IEC:1997 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
QUARTZ CRYSTAL CONTROLLED OSCILLATORS
OF ASSESSED QUALITY –
Part 4: Sectional specification – Capability approval
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60679-4 has been prepared by IEC technical committee 49:
Piezoelectric and dielectric devices for frequency control and selection.
This International Standard has been based on EN 169100: 1993, Quartz crystal controlled
oscillators (Capability approval) of the CECC.
It forms part 4 of a series of standards for quartz crystal controlled oscillators and also
constitutes a specification in the IEC Quality Assessment System for electronic components
(IECQ) where it forms the sectional specification – Capability approval.
The text of this standard is based on the following documents:
FDIS Report on voting
49/386/FDIS 49/390/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

60679-4  IEC:1997 – 7 –
IEC 60679 consists of the following parts under the general title Quartz controlled oscillators of
assessed quality:
– Part 1: Generic specification (IEC 60679-1)
– Part 2: Guide to the use of quartz crystal controlled oscillators (IEC 60679-2)
– Part 3: Standard outlines and lead connections (IEC 60679-3)
– Part 4: Sectional specification – Capability approval (IEC 60679-4)
– Part 4-1: Blank detail specification – Capability approval (IEC 60679-4-1)
– Part 5: Sectional specification – Qualification approval (IEC 60679-5)
– Part 5-1: Blank detail specification – Qualification approval (IEC 60679-5-1)
The QC number which appears on the front cover of this publication is the specification number
in the IEC Quality Assessment System for Electronic Components (IECQ).
Annexes A, B and C form an integral part of this standard.

60679-4  IEC:1997 – 9 –
QUARTZ CRYSTAL CONTROLLED OSCILLATORS
OF ASSESSED QUALITY –
Part 4: Sectional specification – Capability approval
1 General
1.1 Scope
This part of IEC 60679 applies to quartz crystal controlled oscillators as custom built products
or as standard catalogue items and whose quality is assessed on the basis of capability
approval.
It prescribes the preferred ratings and characteristics, with appropriate tests and measuring
methods contained in the generic specification, IEC 60679-1, and gives the general
performance requirements to be used in detail specifications for quartz crystal controlled
oscillators.
The concept of preferred values is directly applicable to standard catalogue items but does not
necessarily apply to custom built products.
1.2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this part of IEC 60679. At the time of publication, the editions indicated
were valid. All normative documents are subject to revision, and parties to agreements based
on this part of IEC 60679 are encouraged to investigate the possibility of applying the most
recent editions of the normative documents indicated below. Members of IEC and ISO maintain
registers of currently valid International Standards.
IEC 61178-1:1993, Quartz crystal units – A specification in the IEC quality assessment system
for electronic components (IECQ) – Part 1: Generic specification
IEC 60679-1:1997, Quartz crystal controlled oscillators of assessed quality – Part 1: Generic
specification
IEC 60679-4-1– Quartz crystal controlled oscillators of assessed quality – Part 4-1: Blank detail
1)
specification – Capability approval
2 Preferred values for ratings and guidance on detail specifications
2.1 Preferred values for ratings and characteristics
The values given in detail specifications shall preferably be selected from those stated in 2.3 of
the generic specification IEC 60679-1.
________
1)
To be published.
60679-4  IEC:1997 – 11 –
2.2 Information to be prescribed in detail specifications
(Applies to both custom built and standard catalogue items.)
Guidance on the preparation of detail specifications is given in the future blank detail
specification, IEC 60679-4-1.
Each detail specification shall state all the tests and measurements required for inspection. For
standard catalogue items this shall, as a minimum, include the relevant tests given in the blank
detail specification, with methods and severities.
The following information shall be given in each detail specification.
2.2.1 Outline drawing and dimensions
The detail specification shall include a dimensional drawing of the crystal controlled oscillator,
and/or reference to an appropriate international standard, to permit easy recognition and to
provide information for dimensioning and gauging procedures.
The dimensions shall include the overall dimensions of the body of the component, and the
size and spacing of the terminations. All dimensions shall be stated in millimetres.
Terminal connections shall be identified for all enclosures.
When a detail specification covers more than one enclosure, the dimensions and their
associated tolerances shall be placed in a table below the drawing.
When the configuration is other than described above, the detail specification shall state such
dimensional information as will adequately describe the crystal controlled oscillator.
2.2.2 Marking
The detail specification shall prescri
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