Amendment 1 - Synthetic quartz crystal - Specifications and guide to the use

Amendement 1 - Cristal de quartz synthétique - Spécifications et guide d'utilisation

General Information

Status
Published
Publication Date
27-Apr-1997
Drafting Committee
WG 5 - TC 49/WG 5
Current Stage
DELPUB - Deleted Publication
Start Date
14-Dec-2004
Completion Date
26-Oct-2025

Relations

Effective Date
05-Sep-2023

Overview

IEC 60758:1993/AMD1:1997 is an important amendment published by the International Electrotechnical Commission (IEC), focusing on synthetic quartz crystals. This amendment provides detailed specifications and a comprehensive guide for the use of synthetic quartz crystals, specifically targeting the piezoelectric and dielectric devices sector crucial for frequency control and selection.

Prepared by IEC Technical Committee 49, this amendment enhances the original 1993 standard by introducing specific inspection rules and control procedures to ensure quality and conformity in synthetic quartz crystal production. These rules apply both to raw synthetic quartz crystals and pre-lumbered (pre-cut) quartz crystals intended for manufacturing piezoelectric elements.

Key Topics

1. Inspection Rules for Synthetic Quartz Crystal

The amendment introduces a rigorous inspection framework structured into two main categories for lot-by-lot testing:

  • Group A Inspection:
    Involves non-destructive tests focusing on critical quality attributes such as:

    • Dimensional tolerances (minimum and maximum sizes)
    • Twinning (structural defects)
    • Cracks and fractures
    • Inclusions within the quartz crystal
  • Group B Inspection:
    Comprises primarily destructive tests that evaluate:

    • Infrared quality (α-coefficient measurement)
    • Density of corrosion etch channels
      These tests may be carried out on the same sample, offering efficient quality evaluation.

Both test groups follow statistical sampling procedures aligned with IEC 60410:1973, the international standard for sampling plans and inspection by attributes.

2. Inspection Rules for Pre-lumbered Synthetic Quartz Crystal

  • Defines the inspection lot as all pre-lumbered crystals produced and supplied simultaneously.
  • Specifies control requirements including:
    • Dimensional tolerances and flatness
    • Angular tolerances on reference surfaces
    • Seed crystal eccentricity verification
  • Reinforces statistical sampling as per IEC 60410 standards, ensuring consistency and reliability in manufactured quartz components.

3. Periodic Verification

  • Establishes guidelines for the periodic verification of infrared α-coefficient measurements to maintain ongoing production quality and reliability.
  • Defines intervals and procedures subject to agreement between buyer and seller to adapt to practical operational needs.

Applications

IEC 60758 Amendment 1 is essential for industries relying on piezoelectric quartz crystals in frequency control devices such as oscillators, resonators, and filters widely used in:

  • Telecommunications equipment
  • Precision timing devices
  • Aerospace and defense electronics
  • Consumer electronics requiring stable frequency references

By adhering to these specifications, manufacturers ensure enhanced reliability, accuracy, and performance of quartz-based frequency control components, directly impacting the quality and consistency of electronic devices.

Related Standards

This amendment references and aligns closely with other influential IEC standards, including:

  • IEC 60410:1973 – Sampling plans and procedures for inspection by attributes, forming the statistical basis for quality assessment.
  • Original IEC 60758:1993 – The base standard upon which this amendment builds, focusing on synthetic quartz crystal specifications.
  • Additional IEC standards governing piezoelectric and dielectric devices for frequency control, ensuring a comprehensive quality framework for related components.

Keywords: IEC 60758, synthetic quartz crystal, piezoelectric devices, frequency control, quartz inspection rules, quality control, IEC 60410, quartz crystal specifications, synthetic quartz guide, electronic frequency devices, inspection standards

Standard

IEC 60758:1993/AMD1:1997 - Amendment 1 - Synthetic quartz crystal - Specifications and guide to the use Released:4/28/1997 Isbn:2831838509

English and French language
9 pages
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Frequently Asked Questions

IEC 60758:1993/AMD1:1997 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Amendment 1 - Synthetic quartz crystal - Specifications and guide to the use". This standard covers: Amendment 1 - Synthetic quartz crystal - Specifications and guide to the use

Amendment 1 - Synthetic quartz crystal - Specifications and guide to the use

IEC 60758:1993/AMD1:1997 is classified under the following ICS (International Classification for Standards) categories: 31.140 - Piezoelectric devices. The ICS classification helps identify the subject area and facilitates finding related standards.

IEC 60758:1993/AMD1:1997 has the following relationships with other standards: It is inter standard links to IEC 60758:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

IEC 60758:1993/AMD1:1997 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


NORME
CEI
INTERNATIONALE
IEC
INTERNATIONAL
STANDARD
AMENDEMENT 1
AMENDMENT 1
1997-05
Amendement 1
Cristal de quartz synthétique –
Spécifications et guide d'utilisation
Amendment 1
Synthetic quartz crystal –
Specifications and guide to the use

 IEC 1997 Droits de reproduction réservés  Copyright - all rights reserved
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 E
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

– 2 – 60758 amend. 1 © CEI:1997

AVANT-PROPOS
Le présent amendement a été établi par le comité d'études 49 de la CEI: Dispositifs

piézoélectriques et diélectriques pour la commande et le choix de la fréquence.

Le texte de cet amendement est issu des documents suivants:

FDIS Rapport de vote
49/356/FDIS 49/377/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cet amendement.
__________
Page 4
SOMMAIRE
Ajouter le titre de la section 4 et des articles 4.1, 4.2 et 4.3 suivants:
SECTION 4: RÈGLE DE CONTRÔLE POUR LE CRISTAL DE QUARTZ SYNTHÉTIQUE
ET LE CRISTAL DE QUARTZ SYNTHÉTIQUE PRÉÉBAUCHÉ
4.1 Domaine d'application
4.2 Règle de contrôle pour le cristal de quartz synthétique
4.3 Règle de contrôle pour le cristal de quartz synthétique préébauché
Page 8
1.2 Références normatives
Ajouter à la liste existante, le titre de la norme suivante:
CEI 60410: 1973, Plans et règles d'échantillonnage pour les contrôles par attributs

Page 46
Ajouter, après le texte de la section 3, la nouvelle section suivante:
Section 4: Règle de contrôle pour le cristal de quartz synthétique
et le cristal de quartz synthétique préébauché
4.1  Domaine d'application
Cette règle de contrôle s'applique aux cristaux de quartz synthétique et cristaux de quartz
synthétique préébauchés destinés à être utilisés pour la fabrication d'éléments piézoélectriques
pour la commande et le choix de la fréquence.

60758 Amend. 1 © IEC:1997 – 3 –

FOREWORD
This amendment has been prepared by IEC technical committee 49: Piezoelectric and

dielectric devices for frequency control and selection.

The text of this amendment is based on the following documents:

FDIS Report on voting
49/356/FDIS 49/377/RVD
Full information on the voting for the approval of this amendment can be found in the report on
voting indicated in the above table.
__________
Page 5
CONTENTS
Add the title of section 4 and of clauses 4.1, 4.2 and 4.3 as follows:
SECTION 4: INSPECTION RULE FOR SYNTHETIC QUARTZ CRYSTAL AND
LUMBERED SYNTHETIC QUARTZ CRYSTAL
4.1 Scope
4.2 Inspection rule for synthetic quartz crystal
4.3 Inspection rule for lumbered synthetic quartz crystal
Page 9
1.2 Normative references
Add the title of the following standard to the existing list:
IEC 60410: 1973, Sampling plans and procedures for inspection by attributes

Page 47
Add, after the text of section 3, the following new section:
Section 4: Inspection rule for synthetic quartz crystal
and lumbered synthetic quartz crystal
4.1 Scope
This inspection rule applies to synthetic quartz crystals and lumbered quartz crystals intended
for the manufacture of piezoelectric elements for frequency control and selection.

– 4 – 60758 amend. 1 © CEI:1997

4.2  Règle de contrôle pour le cristal de quartz synthétique

4.2.1 Le contrôle d'un cristal de quartz synthétique comprend l'essai lot par lot et l'essai périodique.

4.2.2 L'essai lot par lot
L'essai lot par lot est formé du contrôle du groupe A et du contrôle du groupe B.

4.2.2.1 Contrôle du groupe A
Le programme du contrôle du groupe A est donné dans le tableau qui suit.

L'échantillonnage statistique et le contrôle doivent être effectués conformément à la CEI 60410,
ou comme autrement agréé entre l'acheteur et le vendeur.
Les spécimens utilisés pour les essais du groupe A peuvent être utilisés comme spécimens
pour les essais du groupe B.
Dans le tableau suivant:
Les numéros des paragraphes des conditions d'essais et des exigences de performances font
référence à la section 1 de la présente norme.
D = essai destructif
ND = essai non destructif
NC = niveau de contrôle
NQA = niveau de qualité acceptable
NQA Exigences
Essai D ou ND Conditions d’essais NC
% de performances
Groupe A ND II 0,1
Dimensions minimales et 1.5.3 1.5.3
maximales spécifiées d’un
cristal de quartz synthétique
Macles 1.5.5.1 1.5.5.1
Fêlures et fractures 1.5.5.2 1.5.5.2
Inclusions ND 1.5.5.3 II 0,4 1.4.2
4.2.2.2 Contrôle du groupe B
Le programme d'essais du groupe B est donné dans le tableau qui suit, ou comme autrement
agréé entre l'acheteur et le vendeur.
Les spécimens du groupe B peuvent être choisis parmi les spécimens essayés dans le groupe A.

60758 Amend. 1 © IEC:1997 – 5 –

4.2 Inspection rule for synthetic quartz crystal

4.2.1 The inspection of synthetic quartz crystal comprises lot-by-lot tests and periodic tests.

4.2.2 Lot-by-lot test
The lot-by-lot test consists of group A and group B inspection.

4.2.2.1 Group A inspection
The test schedule for group A inspection is given in the following table.

The statistical sampling and the inspection shall be in accordance with IEC 60410, or as
otherwise agreed between buyer and seller.
The samples used for tests in group A may be used as the samples for group B tests.
In the following table:
Subclause numbers of test conditions and performance requirements refer to section 1 of this
standard.
D = destructive
ND = non-destructive
IL = inspection level
AQL = acceptable quality level
AQL Performance
Test D or ND Test conditions IL
% requirements
Group A ND II 0,1
Minimum and maximum 1.5.3 1.5.3
specified synthetic quartz
crystal dimensions
Twinning 1.5.5.1 1.5.5.1
Cracks and fractures 1.5.5.2 1.5.5.2
Inclusions ND 1.5.5.3 II 0,4 1.4.2
4.2.2.2 Group B inspection
The test schedule for group B is given in the following table, or as otherwise agreed between
buyer and seller.
The samples for group B may be selected from the samples tested in group A.

– 6 – 60758 amend. 1 © CEI:1997

Dans le tableau suivant:
Les numéros des paragraphes des conditions d'essais et des exigences de performances font

référence à la section 1 de la présente norme.

n = nombre de spécimens (bloc Z ou barreau Y)

c = critère d'acceptation (nombre de spécimens défectueux autorisé)

D = essai destructif
ND = essai non destructif
Nombre de spécimens
Conditions et critères d’acceptation Exigences de
Essai D ou ND
d’essais performances
nc
Groupe B D
Evaluation de la qualité 1.5.6 Un ou plus comme agréé 0 1.4.3
par la méthode de mesure entre l’acheteur et le vendeur
du coefficient d’extinction à condition que l’échantillon
représente un groupe de
infrarouge α
grandes dimensions destiné
pour l’approbation
Densité des canaux D 1.5.8 Un ou plus comme agréé 0 1.4.5
de corrosion entre l’acheteur et le vendeur
La mesure de densité des canaux de corrosion et du coefficient d'extinction infrarouge α peut
être effectuée sur les mêmes spécimens.
4.2.3 Vérification périodique de α
L'intervalle de vérification d'alpha et la procédure de vérification doivent être comme agréé
entre l'acheteur et le vendeur.
4.3 Règle de contrôle pour le cristal de quartz synthétique préébauché
4.3.1 Essai lot par lot
4.3.1.1 Lot de contrôle
Le lot de contrôle doit être constitué de tous les cristaux de quartz synthétique préébauchés
fabriqué et fourni pour l'inspection dans le même temps. Le matériau brut pour le cristal de

quartz synthétique préébauché doit être en conformité avec les valeurs normalisées, les
exigences associées et les méthodes de mesure de la présente norme.
4.3.1.2 Exigences de contrôle
Le programme d'essais lot par lot est donné dans le tableau qui suit.
L'échantillonnage statistique et le contrôle doivent être effectués en conformité avec la CEI 60410,
ou comme autrement agréé entre l’acheteur et le vendeur.

60758 Amend. 1 © IEC:1997 – 7 –

In the following table:
Subclause numbers of test conditions and performance requirements refer to section 1 of this

standard.
n = sample size (Z-block or Y-bar)

c = acceptance criterion (permitted number of defectives)

D = destructive
ND = non-destructive
Sample size and criterion
Test of acceptability Performance
Test D or ND
conditions requirements
nc
Group B D
Evaluation of infra-red 1.5.6 One or more as agreed 0 1.4.3
between buyer and seller
quality by α-measurement
provided one sample
represents the large size
group intended for
application
Etch channel density D 1.5.8 One or more as agreed 0 1.4.5
between buyer and seller
Etch channel and α-measurement may be performed on the same samples.
4.2.3 Periodic α-verification
The α-verification interval and procedure shall be as agreed between buyer and seller.
4.3 Inspection rule for lumbered synthetic quartz crystal
4.3.1 Lot-by-lot test
4.3.1.1 Inspection lot
An inspection lot shall consist of all the lumbered synthetic quartz crystals produced and
offered for inspection at one time.
Raw material for lumbered synthetic quartz crystal shall be in accordance with the standard

values, related requirements and measuring methods of this standard.
4.3.1.2 Inspection requirements
The schedule for the lot-by-lot test is given in the following table.
The statistical sampling and inspection shall be in accordance with IEC 60410, or as otherwise
agreed between buyer and seller.

– 8 – 60758 amend. 1 © CEI:1997

Dans le tableau suivant:
Les numéros de paragraphes des conditions d'essais et les exigences de performance font

référence à la section 3 de la présente norme.

D = essai destructif
ND = essai non destructif
NC = niveau de contrôle
NQA = niveau de qualité acceptable

NQA Exigences
Essai D ou ND Conditions d’essais NC
% de performances
ND II 0,4
Tolérance sur les dimensions 3.3.1 3.3.1
3.4.1 3.4.1
Planéité de la surface 3.3.2
3.3.2
référence
Tolérance angulaire sur la
3.3.3 3.3.3
surface de référence
Excentricité du germe
3.3.4 3.3.4
II
Vérification de l’identification 0,1
3.2.2
de la surface de référence
__________
60758 Amend. 1 © IEC:1997 – 9 –

In the following table:
Subclause numbers of test conditions and performance requirements refer to section 3 of this

standard.
D = destructive
ND = non-destructive
IL = inspection level
AQL = acceptable quality level

AQL Performance
Test D or ND Test conditions IL
% requirements
ND II 0,4
Tolerance of dimensions 3.3.1 3.3.1
3.4.1 3.4.1
Reference surface flatness 3.3.2
3.3.2
Angular tolerance of reference
surface
3.3.3 3.3.3
Centrality of the seed
3.3.4 3.3.4
Verification of reference II
3.2.2 0,1
surface identification
__________
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