IEC 60294:2012

Measurement of the dimensions of a cylindrical component with axial terminations

IEC 60294:2012 applies to cylindrical capacitors and resistors for use in electronic equipment. This standard gives methods for measurement of the body length and for checking the excessive protective coating extending onto the wire terminations of components with axial wire terminations. It further provides a method for checking the overall body diameter of cylindrical components with axial wire terminations. NOTE: A measuring method for components with unidirectional terminations is given in IEC 60717. This second edition cancels and replaces the first edition, published in 1969, and constitutes a technical revision. The main technical changes with respect to the first edition are the following:
- employment of SI units only, causing deletion of all imperial dimensions,
- reduction of the tolerance on the chamfer depth in Figure 1 and Figure 2,
- elaboration of the method for coating material extending onto wire terminations,
- elaboration of the method for the overall body diameter, and
- introduction of requirements on information to be given in a relevant specification.

Mesure des dimensions d'un composant cylindrique à sorties axiales

La CEI 60294:2012 s'applique aux condensateurs et résistances cylindriques destinés à être utilisés dans les matériels électroniques. Cette norme donne des méthodes pour la mesure de la longueur du corps et pour la vérification de l'excédent de revêtement de protection sur les fils de sorties des composants à fils de sorties axiales. Elle donne également une méthode pour la vérification du diamètre hors-tout du corps des composants cylindriques à fils de sorties axiales. NOTE: Une méthode de mesure pour les composants à sorties unilatérales est donnée dans la CEI 60717. Cette deuxième édition annule et remplace la première édition parue en 1969. Elle constitue une révision technique. Les principales modifications techniques par rapport à la première édition sont les suivantes:
- utilisation d'unités SI uniquement, entraînant la suppression de toutes les dimensions impériales,
- réduction de la tolérance pour la profondeur du chanfrein à la Figure 1 et à la Figure 2,
- élaboration de la méthode relative à l'extension du matériau de revêtement sur les fils de sorties,
- élaboration de la méthode relative au diamètre hors-tout du corps, et
- introduction des exigences relatives aux informations à fournir dans une spécification applicable.

General Information

• Status: Published
• Publication Date: 12-Jul-2012
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 31.020 - Electronic components in general
• Technical Committee: TC 40 - Capacitors and resistors for electronic equipment
• Current Stage: PPUB - Publication issued
• Start Date: 15-Aug-2012
• Completion Date: 13-Jul-2012

Standards Content (Sample)

IEC 60294 ®
Edition 2.0 2012-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Measurement of the dimensions of a cylindrical component with axial
terminations
Mesure des dimensions d'un composant cylindrique à sorties axiales
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IEC 60294 ®
Edition 2.0 2012-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Measurement of the dimensions of a cylindrical component with axial

terminations
Mesure des dimensions d'un composant cylindrique à sorties axiales

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX M
ICS 31.020 ISBN 978-2-83220-229-6

– 2 – 60294 © IEC:2012
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Body length . 5
3.1 General . 5
3.2 Standard gauge plates for components with axial wire terminations . 5
3.3 Special gauge plates for components with glass-metal seals or other
discontinuities in their axial wire terminations . 7
4 Coating material extending onto wire terminations . 8
5 Overall body diameter . 9
6 Information to be given in the relevant specification. 10
Annex A (informative) Cross-reference . 11
Bibliography . 12

Figure 1 – Standard gauge plates . 6
Figure 2 – Special gauge plates . 7
Figure 3 – Gauge plate for checking coating material extended onto a wire termination . 8
Figure 4 – Straight tube diameter gauge . 9

Table 1 – Slot width or hole diameter for standard gauge plates . 6
Table A.1 – Cross reference . 11

60294 © IEC:2012 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MEASUREMENT OF THE DIMENSIONS
OF A CYLINDRICAL COMPONENT WITH AXIAL TERMINATIONS

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
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60294 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
This second edition cancels and replaces the first edition, published in 1969, and constitutes
a technical revision.
The main technical changes with respect to the first edition are the following:
– employment of SI units only, causing deletion of all imperial dimensions,
– reduction of the tolerance on the chamfer depth in Figure 1 and Figure 2,
– elaboration of the method for coating material extending onto wire terminations,
– elaboration of the method for the overall body diameter, and
– introduction of requirements on information to be given in a relevant specification.

– 4 – 60294 © IEC:2012
The text of this standard is based on the following documents:
FDIS Report on voting
40/2154/FDIS 40/2166/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
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.
60294 © IEC:2012 – 5 –
MEASUREMENT OF THE DIMENSIONS
OF A CYLINDRICAL COMPONENT WITH AXIAL TERMINATIONS

1 Scope
This International Standard applies to cylindrical capacitors and resistors for use in electronic
equipment.
This standard gives methods for measurement of the body length and for checking the
excessive protective coating extending onto the wire terminations of components with axial
wire terminations. It further provides a method for checking the overall body diameter of
cylindrical components with axial wire terminations.
NOTE A measuring method for components with unidirectional terminations is given in IEC 60717.
2 Normative references
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.
IEC 60301, Preferred diameters of wire terminations of capacitors and resistors
3 Body length
3.1 General
The length of the body shall be measured by inserting the wire terminations into slots or bores
of a pair of gauge plates and by moving these plates parallel to each other until the
component body is clamped without deforming the body or the wire terminations.
The plates shall be considered sufficiently close to paraIlel if, allowing for the size of plate
and the distance between the component and the measuring device, the error in measurement
due to this cause does not exceed 0,05 mm.
Components with axial wire terminations shall be measured using the standard gauge plates
of 3.2, unless glass-metal seals or other discontinuities in the wire terminations require the
use of the special gauge plate of 3.3.
3.2 Standard gauge plates for components with axial wire terminations
The gauge plate defined in Figure 1 shall be used for components with axial wire
terminations, unless prescribed otherwise by the relevant specification.

– 6 – 60294 ©
...