IEC 60384-2:2021

Fixed capacitors for use in electronic equipment - Part 2: Sectional specification - Fixed metallized polyethylene terephthalate film dielectric DC capacitors

IEC 60384-2:2021 applies to fixed capacitors for direct current, with metallized electrodes and polyethylene-terephthalate dielectric for use in electronic equipment.
These capacitors have a possibility of "self-healing properties" depending on conditions of use. They are primarily intended for applications where the AC component is small with respect to the rated voltage. Two performance grades of capacitors are covered: grade 1 for long-life application and grade 2 for general application.
Capacitors for electromagnetic interference suppression and surface mount fixed metallized polyethylene-terephthalate film dielectric DC capacitors are not included, but are covered by IEC 60384-14 and IEC 60384-19, respectively.
The object of this document is to prescribe preferred ratings and characteristics and to select from IEC 60384-1 the appropriate quality assessment procedures, tests and measuring methods, and to give general performance requirements for this type of capacitor. Test severities and requirements prescribed in detail specifications referring to this sectional specification are of equal or higher performance level, because lower performance levels are not permitted.
This edition includes the following significant technical changes with respect to the previous edition:
a) revision of all parts of the document based on the ISO/IEC Directives, Part 2:2018 and harmonization with other similar kinds of documents;
b) the document structure has been organized to follow the new sectional specification structure decided by TC 40;
c) revision of tables and Clause 5 so as to prevent duplications and contradictions.

Condensateurs fixes utilisés dans les équipements électroniques - Partie 2: Spécification intermédiaire – Condensateurs fixes pour courant continu à diélectrique en film de téréphtalate de polyéthylène métallisé

L’IEC 60384-2:2021 s’applique aux condensateurs fixes pour courant continu, avec des électrodes métallisées et des diélectriques en téréphtalate de polyéthylène et utilisés dans des équipements électroniques.
Ces condensateurs ont potentiellement des “propriétés autocicatrisantes” selon les conditions d’utilisation. Ils sont principalement destinés aux applications dont la composante de courant alternatif est négligeable par rapport à la tension assignée. Deux classes de performance de condensateurs sont couvertes: la Classe 1 pour des applications longue durée et la Classe 2 pour une application courante.
Les condensateurs d’antiparasitage et les condensateurs fixes pour courant continu à diélectrique en film de téréphtalate de polyéthylène métallisé pour montage en surface n’en font pas partie, mais sont respectivement couverts par l’IEC 60384-14 et l’IEC 60384-19.
L’objet du présent document est de prescrire des valeurs assignées et des caractéristiques préférentielles et de choisir à partir de l’IEC 60384-1 les procédures d’assurance de la qualité, les essais et les méthodes de mesure appropriées, et de donner les exigences de performance générales pour ce type de condensateur. Les sévérités d’essai et les exigences prescrites dans les spécifications particulières faisant référence à la présente spécification intermédiaire sont d’un niveau supérieur ou égal à celui de la présente spécification intermédiaire, car des niveaux de performance supérieurs ne sont pas autorisés.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
a) révision de toutes les parties du document en s’appuyant sur les directives ISO/IEC, Partie 2:2018, et harmonisation avec d’autres types de documents similaires;
b) organisation de la structure du document afin de suivre la nouvelle structure de spécification intermédiaire décidée par le TC 40;
c) révision des tableaux et de l’Article 5 pour éviter les répétitions et les contradictions.

General Information

• Status: Published
• Publication Date: 11-Apr-2021
• ICS: 31.060.30 - Paper and plastics capacitors
• Technical Committee: TC 40 - Capacitors and resistors for electronic equipment
• Drafting Committee: MT 60384-2 - TC 40/MT 60384-2
• Current Stage: PPUB - Publication issued
• Start Date: 12-Apr-2021
• Completion Date: 07-May-2021

Relations

• Revises: IEC 60384-2:2011 - Fixed capacitors for use in electronic equipment - Part 2: Sectional specification - Fixed metallized polyethylene terephthalate film dielectric d.c. capacitors
• Effective Date: 05-Sep-2023

Overview

IEC 60384-2:2021 is the IEC sectional specification for fixed metallized polyethylene‑terephthalate (PET) film dielectric DC capacitors used in electronic equipment. It applies to metallized‑electrode capacitors for direct current where the AC component is small relative to the rated voltage. The standard defines preferred ratings, characteristics, required tests, measuring methods and quality assessment procedures for these DC capacitors. Two performance grades are specified: Grade 1 (long‑life) and Grade 2 (general application). Note: EMI suppression capacitors and surface‑mount PET DC capacitors are excluded (see IEC 60384‑14 and IEC 60384‑19).

Key topics and technical requirements

• Preferred ratings and characteristics: nominal capacitance, tolerances, rated and category voltages, and rated temperature ranges are prescribed to promote interchangeability.
• Performance grades: requirements differ for Grade 1 (long life) and Grade 2 (general use), guiding selection for reliability‑critical designs.
• Electrical tests and measurements:
  • Visual examination and dimensional checks
  • Voltage proof (dielectric strength)
  • Capacitance measurement and tolerance verification
  • Tangent of loss angle (tan δ) - dissipation factor limits
  • Insulation resistance and leakage criteria
• Mechanical and environmental tests:
  • Robustness of terminations, solderability and resistance to soldering heat
  • Vibration, shock and bump tests
  • Rapid temperature change, climatic sequence, damp heat and endurance tests
• Special behaviours: the document recognizes self‑healing properties of metallized PET capacitors and sets test regimens accordingly.
• Quality assessment: selects applicable procedures from IEC 60384‑1 and defines lot‑by‑lot, periodic and qualification approval testing; detail specifications may require equal or higher severities.

Practical applications and users

Who benefits from IEC 60384‑2:2021:

• Capacitor manufacturers - to design, rate and test metallized PET DC capacitors for market compliance.
• Electronic component engineers and designers - to select appropriate Grade 1 or Grade 2 capacitors for power supplies, filters and DC coupling where low AC ripple is present.
• Test laboratories and quality managers - to perform the standardized electrical, mechanical and climatic tests and to implement quality conformance inspection plans.
• Procurement and compliance teams - to specify verified ratings and test requirements in purchase and detail specifications.

Typical applications: DC filtering, decoupling and energy storage in consumer electronics, industrial controls and other equipment where PET film DC capacitors’ self‑healing and stability are advantageous.

Related standards

• IEC 60384‑1 - General common specification and quality assessment procedures referenced by this sectional standard.
• IEC 60384‑14 - Capacitors for electromagnetic interference suppression.
• IEC 60384‑19 - Surface‑mount fixed metallized PET film dielectric DC capacitors.

For full test details, tables and formal requirements obtain IEC 60384‑2:2021 from the IEC Webstore or your national IEC member committee.

Standards Content (Sample)

IEC 60384-2 ®
Edition 5.0 2021-04
INTERNATIONAL
STANDARD
Fixed capacitors for use in electronic equipment –
Part 2: Sectional specification – Fixed metallized polyethylene-terephthalate film
dielectric DC capacitors:
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
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IEC 60384-2 ®
Edition 5.0 2021-04
INTERNATIONAL
STANDARD
Fixed capacitors for use in electronic equipment –

Part 2: Sectional specification – Fixed metallized polyethylene-terephthalate film

dielectric DC capacitors:
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.060.30 ISBN 978-2-8322-9654-7

– 2 – IEC 60384-2:2021 © IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Preferred ratings and characteristics . 8
4.1 Preferred characteristics . 8
4.2 Preferred values of ratings . 8
4.2.1 Nominal capacitance (C ) . 8
N
4.2.2 Tolerance on nominal capacitance . 8
4.2.3 Rated voltage (U ) . 9
R
4.2.4 Category voltage (U ) . 9
C
4.2.5 Rated temperature . 9
5 Test and measurement procedures, and performance requirements . 9
5.1 Visual examination and check of dimensions . 9
5.2 Electrical tests . 9
5.2.1 Voltage proof . 9
5.2.2 Capacitance . 10
5.2.3 Tangent of loss angle (tan δ) . 10
5.2.4 Insulation resistance . 11
5.3 Robustness of terminations . 12
5.3.1 General . 12
5.3.2 Initial inspections . 12
5.3.3 Test method . 13
5.3.4 Final inspections and requirements . 13
5.4 Resistance to soldering heat . 13
5.4.1 General . 13
5.4.2 Test conditions . 13
5.4.3 Final inspections and requirements . 13
5.5 Solderability . 13
5.5.1 General . 13
5.5.2 Test conditions . 13
5.5.3 Final requirements . 14
5.6 Rapid change of the temperature . 14
5.6.1 General . 14
5.6.2 Initial inspections . 14
5.6.3 Test conditions . 14
5.6.4 Final inspections . 14
5.7 Vibration . 14
5.7.1 General . 14
5.7.2 Test conditions . 14
5.7.3 Final inspections and requirements . 14
5.8 Bump (repetitive shock) . 14
5.8.1 General . 14
5.8.2 Initial inspections . 14
5.8.3 Test conditions . 15

5.8.4 Final inspections and requirements . 15
5.9 Shock . 15
5.9.1 General . 15
5.9.2 Initial inspections . 15
5.9.3 Test conditions . 15
5.9.4 Final inspections and requirements . 15
5.10 Climatic sequence. 16
5.10.1 General . 16
5.10.2 Initial inspections . 16
5.10.3 Dry heat . 16
5.10.4 Damp heat, cyclic, Test Db, first cycle . 16
5.10.5 Cold. 16
5.10.6 Low air pressure . 16
5.10.7 Damp heat, cyclic, Test Db, remaining cycles . 16
5.11 Damp heat, steady state . 17
5.11.1 General . 17
5.11.2 Initial inspections . 17
5.11.3 Test conditions . 17
5.11.4 Final inspections and requirements . 17
5.12 Endurance . 17
5.12.1 General . 17
5.12.2 Initial inspections . 17
5.12.3 Test conditions . 17
5.12.4 Final inspections and requirements . 17
5.13 Charge and discharge . 18
5.13.1 General . 18
5.13.2 Initial inspections . 18
5.13.3 Test conditions . 18
5.13.4 Final inspections and requirements . 19
5.14 Component solvent resistance . 19
5.15 Solvent resistance of the marking . 19
6 Marking . 19
6.1 General . 19
6.2 Information for marking . 19
6.3 Marking of capacitors . 19
6.4 Marking of packaging . 19
6.5 Additional marking . 19
7 Information to be given in a detail specification . 20
7.1 General . 20
7.2 Outline drawing and dimensions . 20
7.3 Mounting . 20
7.4 Rating and characteristics . 20
7.4.1 General . 20
7.4.2 Particular characteristics . 20
7.4.3 Soldering . 20
7.5 Marking . 21
8 Quality assessment procedures . 21
8.1 Primary stage of manufacture . 21
8.2 Structurally similar components . 21

– 4 – IEC 60384-2:2021 © IEC 2021
8.3 Certified records of released lots . 21
8.4 Qualification approval procedures . 21
8.4.1 General . 21
8.4.2 Qualification approval on the basis of the fixed sample size procedures . 21
8.5 Quality conformance inspection . 28
8.5.1 Formation of inspection lots . 28
8.5.2 Test schedule . 29
8.5.3 Delayed delivery . 29
8.5.4 Assessment levels . 29
Annex X (informative) Cross-references to the previous edition of this document . 31
Bibliography . 32

Table 1 – Test points and voltages . 10
Table 2 – Tangent of loss angle requirements . 11
Table 3 – Insulation resistance requirements . 12
Table 4 – Correction factors . 12
Table 5 – Preferred severities . 15
Table 6 – Test conditions . 17
Table 7 – Lead spacing and dU/dt . 18
Table 8 – Sampling plan together with numbers of permissible non-conformance for
qualification approval test . 23
Table 9 – Test schedule for qualification approval (1 of 5) . 24
Table 10 – Lot-by-lot inspection . 29
Table 11 – Periodic inspection . 30
Table X.1 – Cross-references . 31

INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 2: Sectional specification – Fixed metallized
polyethylene-terephthalate film dielectric DC capacitors

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
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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 60384-2 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
This fifth edition cancels and replaces the fourth edition published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revision of all parts of the document based on the ISO/IEC Directives, Part 2:2018 and
harmonization with other similar kinds of documents;
b) the document structure has been organized to follow the new sectional specification
structure decided by TC 40;
c) revision of tables and Clause 5 so as to prevent duplications and contradictions.
The text of this International Standard is based on the following documents:

– 6 – IEC 60384-2:2021 © IEC 2021
FDIS Report on voting
40/2821/FDIS 40/2830/RVD
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60384 series, published under the general title Fixed capacitors for
use in electronic equipment, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 2: Sectional specification – Fixed metallized
polyethylene-terephthalate film dielectric DC capacitors

1 Scope
This part of IEC 60384 applies to fixed capacitors for direct current, with metallized electrodes
and polyethylene-terephthalate dielectric for use in electronic equipment.
These capacitors have a possibility of "self-healing properties" depending on conditions of use.
They are primarily intended for applications where the AC component is small with respect to
the rated voltage. Two performance grades of capacitors are covered: grade 1 for long-life
application and grade 2 for general application.
Capacitors for electromagnetic interference suppression and surface mount fixed metallized
polyethylene-terephthalate film dielectric DC capacitors are not included, but are covered by
IEC 60384-14 and IEC 60384-19, respectively.
The object of this document is to prescribe preferred ratings and characteristics and to select
from IEC 60384-1 the appropriate quality assessment procedures, tests and measuring
methods, and to give general performance requirements for this type of capacitor. Test
severities and requirements prescribed in detail specifications referring to this sectional
specification are of equal or higher performance level, because lower performance levels are
not permitted.
2 Normative references
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.
IEC 60063:2015, Preferred number series for resistors and capacitors
IEC 60068-1:2013, Environmental testing – Part 1: General and guidance
IEC 60384-1:2016, Fixed capacitors for use in electronic equipment – Part 1: Generic
specification
IEC 61193-2:2007, Quality assessment systems – Part 2: Selection and use of sampling plans
for inspection of electronic components and packages
ISO 3:1973, Preferred numbers – Series of preferred numbers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60384-1:2016 and
the following apply.
– 8 – IEC 60384-2:2021 © IEC 2021
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
grade 1 capacitors
capacitors intended for long-life applications with stringent requirements for the
electrical parameters
3.2
grade 2 capacitors
capacitors for general application where the stringent requirements for
grade 1 are not necessary
3.3
rated voltage
U
R
maximum DC voltage that can be continuously applied to a capacitor at the rated temperature
4 Preferred ratings and characteristics
4.1 Preferred characteristics
Preferred climatic categories only shall be given in the preferred characteristics.
The capacitors covered by this specification are classified into climatic categories in accordance
with the general rules given in IEC 60068-1:2013, Annex A.
The lower and upper category temperatures and the duration of the damp heat, steady-state
test shall be chosen from the following:
– lower category temperature: −55 °C, −40 °C and −25 °C
– upper category temperature: +85 °C, +100 °C, +105 °C and +125 °C
– duration of the damp heat, steady-state test: 21 days and 56 days
NOTE With continuous operation at 125 °C in excess of the endurance test time, accelerated ageing is considered
(see detail specification).
The severities for the cold and dry heat tests are the lower and upper category temperatures,
respectively.
4.2 Preferred values of ratings
4.2.1 Nominal capacitance (C )
N
Preferred values of nominal capacitance are values chosen from the E series of IEC 60063,
n
which are given in Table 1, and their decimal multiples (× 10 , where n is an integer).
4.2.2 Tolerance on nominal capacitance
The preferred tolerances on the nominal capacitance are ±5 %, ±10 % and ±20 %.

4.2.3 Rated voltage (U )
R
The preferred values of rated voltages are: 40 V – 50 V – 63 V – 100 V – 160 V – 200 V – 250 V
– 400 V – 630 V – 1 000 V – 1 600 V. These values conform to the basic series of preferred
values R5 and R 10 given in ISO 3.
The sum of the DC voltage and the peak AC voltage applied to the capacitor shall not exceed
the rated voltage. The value of the peak AC voltage shall not exceed the following percentages
of the rated voltage at the frequencies stated and shall be not greater than 280 V:
–    50 Hz: 20 %
–   100 Hz: 15 %
–  1 000 Hz:  3 %
– 10 000 Hz:  1 %
unless otherwise specified in the detail specification.
4.2.4 Category voltage (U )
C
The category voltage is equal to the rated voltage for upper category temperatures up to 85 °C.
For the upper category temperature of 100 °C, the voltage is 0,8 U .
R
.
For the upper category temperature of 105 °C, the voltage is 0,75 U
R
For the upper category temperature of 125 °C, the voltage is 0,5 U .
R
4.2.5 Rated temperature
The standard value of rated temperature is 85 °C.
5 Test and measurement procedures, and performance requirements
5.1 Visual examination and check of dimensions
See IEC 60384-1:2016, 4.4.
5.2 Electrical tests
5.2.1 Voltage proof
5.2.1.1 General
See IEC 60384-1:2016, 4.6, with the details of 5.2.1.2 to 5.2.1.4.
5.2.1.2 Test circuit
Delete the capacitor C .
The product of R and the nominal capacitance (C ) of the capacitor under test (C ) shall be
1 N X
smaller than or equal to 1 s and greater than 0,01 s.
R includes the internal resistance of the power supply.
R shall limit the discharge current to a value equal to or less than 1 A.
– 10 – IEC 60384-2:2021 © IEC 2021
5.2.1.3 Test conditions
The voltages in Table 1 shall be applied between the measuring points of IEC 60384-1:2016,
Table 3, for a period of 1 min for qualification approval testing and for a period of 1 s for the lot-
by-lot quality conformance testing.
Table 1 – Test points and voltages
Test point Test voltage
1 a) Grade 1: 1,6 U
R
Grade 2: 1,4 U
R
1 b), 1 c) 2 U with a minimum of 200 V
R
5.2.1.4 Requirements
See Table 9.
The occurrence of self-healing breakdowns during the application of the test voltages is allowed.
5.2.2 Capacitance
5.2.2.1 General
See IEC 60384-1:2016, 4.7, with the details of 5.2.2.2 and 5.2.2.3.
5.2.2.2 Measuring conditions
The capacitance shall be measured at, or corrected to, a frequency of 1 kHz.
For nominal capacitance values > 10 µF, 50 Hz to 120 Hz may be used, but 1 kHz shall be the
reference frequency.
The applied peak voltage at 1 kHz shall not exceed 3 % of the rated voltage, and the applied
peak voltage at 50 Hz to 120 Hz shall not exceed 20 % of the rated voltage, with a maximum of
100 V (70 V RMS).
5.2.2.3 Requirements
The capacitance shall be within the specified tolerance. See Table 9.
5.2.3 Tangent of loss angle (tan δ)
5.2.3.1 General
See IEC 60384-1:2016, 4.8, with the details of 5.2.3.2 to 5.2.3.5.
5.2.3.2 Measuring conditions for measurements at 1 kHz
Tangent of loss angle shall be measured as follows:
– frequency: 1 kHz;
– peak voltage: ≤ 3 % of the rated voltage;
−4
– inaccuracy: ≤ 10 × 10 (absolute value).

5.2.3.3 Requirement for measurements at 1 kHz
Tangent of loss angle shall not exceed the applicable values shown in Table 2.
Table 2 – Tangent of loss angle requirements
Nominal capacitance
tan δ (absolute value)
Grade 1 capacitors Grade 2 capacitors
≤ 1 μF 0,008 0,01
> 1 μF 0,01 0,01
5.2.3.4 Measuring conditions for measurements at 10 kHz
For capacitors with C ≤ 1 μF, tan δ shall be measured as follows:
N
– frequency: 10 kHz;
– voltage: ≤ 1 V RMS;
-4
– inaccuracy: ≤ 10 × 10 (absolute value).
5.2.3.5 Requirement for measurements at 10 kHz
Tangent of loss angle shall be prescribed in the detail specification.
5.2.4 Insulation resistance
5.2.4.1 General
See IEC 60384-1:2016, 4.5, with the details of 5.2.4.2 to 5.2.4.5.
5.2.4.2 Preconditioning
Before measurement, the capacitor shall be fully discharged. The product of the resistance of
the discharge circuit and the nominal capacitance of the capacitor under test shall be ≥ 0,01 s
or any other value prescribed in the detail specification.
5.2.4.3 Measuring conditions
The measuring voltage shall be in accordance with IEC 60384-1:2016, 4.5.2.
The voltage shall be applied immediately at the correct value through the internal resistance of
the voltage source.
The product of the internal resistance and the nominal capacitance of the capacitor under test
shall be smaller than 1 s or any other value prescribed in the detail specification.
5.2.4.4 Requirements
The insulation resistance shall meet the requirements given in Table 3. However, in lot-by-lot
quality conformance testing, the measuring may be interrupted when the limits stated in Table 3
are reached, which can happen in under 60 s.

– 12 – IEC 60384-2:2021 © IEC 2021
Table 3 – Insulation resistance requirements
Minimum insulation
Minimum insulation
resistance between
b
Minimum RC product resistance between
terminations and
terminations
Measuring Nominal Rated
case
a
capacitance voltage
points
s MΩ MΩ
Grade 1 Grade 2 Grade 1 Grade 2
> 100 V 10 000 2 500   
> 0,33 μF
≤ 100 V 5 000 1 250
  
1a)
> 100 V   30 000 7 500 
≤ 0,33 μF
≤ 100 V   15 000 3 750 
1b), 1c) 30 000
    
a
Measuring points in accordance with Table 3 of IEC 60384-1:2016.
b
R = insulation resistance between the terminations
C = nominal capacitance
5.2.4.5 Correction factors
When the test is carried out at a temperature other than 20 °C, the result shall, when necessary,
be corrected to 20 °C by multiplying the result of the measurement by the appropriate correction
factor. In case of doubt, me
...

IEC 60384-2 ®
Edition 5.0 2021-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed capacitors for use in electronic equipment –
Part 2: Sectional specification – Fixed metallized polyethylene-terephthalate film
dielectric DC capacitors
Condensateurs fixes utilisés dans les équipements électroniques –
Partie 2: Spécification intermédiaire – Condensateurs fixes pour courant continu
à diélectrique en film de téréphtalate de polyéthylène métallisé

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
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IEC 60384-2 ®
Edition 5.0 2021-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed capacitors for use in electronic equipment –

Part 2: Sectional specification – Fixed metallized polyethylene-terephthalate film

dielectric DC capacitors
Condensateurs fixes utilisés dans les équipements électroniques –

Partie 2: Spécification intermédiaire – Condensateurs fixes pour courant continu

à diélectrique en film de téréphtalate de polyéthylène métallisé

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.060.30 ISBN 978-2-8322-1030-2

– 2 – IEC 60384-2:2021 © IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Preferred ratings and characteristics . 8
4.1 Preferred characteristics . 8
4.2 Preferred values of ratings . 8
4.2.1 Nominal capacitance (C ) . 8
N
4.2.2 Tolerance on nominal capacitance . 8
4.2.3 Rated voltage (U ) . 9
R
4.2.4 Category voltage (U ) . 9
C
4.2.5 Rated temperature . 9
5 Test and measurement procedures, and performance requirements . 9
5.1 Visual examination and check of dimensions . 9
5.2 Electrical tests . 9
5.2.1 Voltage proof . 9
5.2.2 Capacitance . 10
5.2.3 Tangent of loss angle (tan δ) . 10
5.2.4 Insulation resistance . 11
5.3 Robustness of terminations . 12
5.3.1 General . 12
5.3.2 Initial inspections . 12
5.3.3 Test method . 13
5.3.4 Final inspections and requirements . 13
5.4 Resistance to soldering heat . 13
5.4.1 General . 13
5.4.2 Test conditions . 13
5.4.3 Final inspections and requirements . 13
5.5 Solderability . 13
5.5.1 General . 13
5.5.2 Test conditions . 13
5.5.3 Final requirements . 14
5.6 Rapid change of the temperature . 14
5.6.1 General . 14
5.6.2 Initial inspections . 14
5.6.3 Test conditions . 14
5.6.4 Final inspections . 14
5.7 Vibration . 14
5.7.1 General . 14
5.7.2 Test conditions . 14
5.7.3 Final inspections and requirements . 14
5.8 Bump (repetitive shock) . 14
5.8.1 General . 14
5.8.2 Initial inspections . 14
5.8.3 Test conditions . 15

5.8.4 Final inspections and requirements . 15
5.9 Shock . 15
5.9.1 General . 15
5.9.2 Initial inspections . 15
5.9.3 Test conditions . 15
5.9.4 Final inspections and requirements . 15
5.10 Climatic sequence. 16
5.10.1 General . 16
5.10.2 Initial inspections . 16
5.10.3 Dry heat . 16
5.10.4 Damp heat, cyclic, Test Db, first cycle . 16
5.10.5 Cold. 16
5.10.6 Low air pressure . 16
5.10.7 Damp heat, cyclic, Test Db, remaining cycles . 16
5.11 Damp heat, steady state . 17
5.11.1 General . 17
5.11.2 Initial inspections . 17
5.11.3 Test conditions . 17
5.11.4 Final inspections and requirements . 17
5.12 Endurance . 17
5.12.1 General . 17
5.12.2 Initial inspections . 17
5.12.3 Test conditions . 17
5.12.4 Final inspections and requirements . 17
5.13 Charge and discharge . 18
5.13.1 General . 18
5.13.2 Initial inspections . 18
5.13.3 Test conditions . 18
5.13.4 Final inspections and requirements . 19
5.14 Component solvent resistance . 19
5.15 Solvent resistance of the marking . 19
6 Marking . 19
6.1 General . 19
6.2 Information for marking . 19
6.3 Marking of capacitors . 19
6.4 Marking of packaging . 19
6.5 Additional marking . 19
7 Information to be given in a detail specification . 20
7.1 General . 20
7.2 Outline drawing and dimensions . 20
7.3 Mounting . 20
7.4 Rating and characteristics . 20
7.4.1 General . 20
7.4.2 Particular characteristics . 20
7.4.3 Soldering . 20
7.5 Marking . 21
8 Quality assessment procedures . 21
8.1 Primary stage of manufacture . 21
8.2 Structurally similar components . 21

– 4 – IEC 60384-2:2021 © IEC 2021
8.3 Certified records of released lots . 21
8.4 Qualification approval procedures . 21
8.4.1 General . 21
8.4.2 Qualification approval on the basis of the fixed sample size procedures . 21
8.5 Quality conformance inspection . 28
8.5.1 Formation of inspection lots . 28
8.5.2 Test schedule . 29
8.5.3 Delayed delivery . 29
8.5.4 Assessment levels . 29
Annex X (informative) Cross-references to the previous edition of this document . 31
Bibliography . 32

Table 1 – Test points and voltages . 10
Table 2 – Tangent of loss angle requirements . 11
Table 3 – Insulation resistance requirements . 12
Table 4 – Correction factors . 12
Table 5 – Preferred severities . 15
Table 6 – Test conditions . 17
Table 7 – Lead spacing and dU/dt . 18
Table 8 – Sampling plan together with numbers of permissible non-conformance for
qualification approval test . 23
Table 9 – Test schedule for qualification approval . 24
Table 10 – Lot-by-lot inspection . 29
Table 11 – Periodic inspection . 30
Table X.1 – Cross-references . 31

INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 2: Sectional specification – Fixed metallized
polyethylene-terephthalate film dielectric DC capacitors

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,
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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
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Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
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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
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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
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other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
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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 60384-2 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
This fifth edition cancels and replaces the fourth edition published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revision of all parts of the document based on the ISO/IEC Directives, Part 2:2018 and
harmonization with other similar kinds of documents;
b) the document structure has been organized to follow the new sectional specification
structure decided by TC 40;
c) revision of tables and Clause 5 so as to prevent duplications and contradictions.

– 6 – IEC 60384-2:2021 © IEC 2021
The text of this International Standard is based on the following documents:
FDIS Report on voting
40/2821/FDIS 40/2830/RVD
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60384 series, published under the general title Fixed capacitors for
use in electronic equipment, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 2: Sectional specification – Fixed metallized
polyethylene-terephthalate film dielectric DC capacitors

1 Scope
This part of IEC 60384 applies to fixed capacitors for direct current, with metallized electrodes
and polyethylene-terephthalate dielectric for use in electronic equipment.
These capacitors have a possibility of "self-healing properties" depending on conditions of use.
They are primarily intended for applications where the AC component is small with respect to
the rated voltage. Two performance grades of capacitors are covered: grade 1 for long-life
application and grade 2 for general application.
Capacitors for electromagnetic interference suppression and surface mount fixed metallized
polyethylene-terephthalate film dielectric DC capacitors are not included, but are covered by
IEC 60384-14 and IEC 60384-19, respectively.
The object of this document is to prescribe preferred ratings and characteristics and to select
from IEC 60384-1 the appropriate quality assessment procedures, tests and measuring
methods, and to give general performance requirements for this type of capacitor. Test
severities and requirements prescribed in detail specifications referring to this sectional
specification are of equal or higher performance level, because lower performance levels are
not permitted.
2 Normative references
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.
IEC 60063:2015, Preferred number series for resistors and capacitors
IEC 60068-1:2013, Environmental testing – Part 1: General and guidance
IEC 60384-1:2016, Fixed capacitors for use in electronic equipment – Part 1: Generic
specification
IEC 61193-2:2007, Quality assessment systems – Part 2: Selection and use of sampling plans
for inspection of electronic components and packages
ISO 3:1973, Preferred numbers – Series of preferred numbers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60384-1:2016 and
the following apply.
– 8 – IEC 60384-2:2021 © IEC 2021
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
grade 1 capacitors
capacitors intended for long-life applications with stringent requirements for the
electrical parameters
3.2
grade 2 capacitors
capacitors for general application where the stringent requirements for
grade 1 are not necessary
3.3
rated voltage
U
R
maximum DC voltage that can be continuously applied to a capacitor at the rated temperature
4 Preferred ratings and characteristics
4.1 Preferred characteristics
Preferred climatic categories only shall be given in the preferred characteristics.
The capacitors covered by this specification are classified into climatic categories in accordance
with the general rules given in IEC 60068-1:2013, Annex A.
The lower and upper category temperatures and the duration of the damp heat, steady-state
test shall be chosen from the following:
– lower category temperature: −55 °C, −40 °C and −25 °C
– upper category temperature: +85 °C, +100 °C, +105 °C and +125 °C
– duration of the damp heat, steady-state test: 21 days and 56 days
NOTE With continuous operation at 125 °C in excess of the endurance test time, accelerated ageing is considered
(see detail specification).
The severities for the cold and dry heat tests are the lower and upper category temperatures,
respectively.
4.2 Preferred values of ratings
4.2.1 Nominal capacitance (C )
N
Preferred values of nominal capacitance are values chosen from the E series of IEC 60063,
n
which are given in Table 1, and their decimal multiples (× 10 , where n is an integer).
4.2.2 Tolerance on nominal capacitance
The preferred tolerances on the nominal capacitance are ±5 %, ±10 % and ±20 %.

4.2.3 Rated voltage (U )
R
The preferred values of rated voltages are: 40 V – 50 V – 63 V – 100 V – 160 V – 200 V – 250 V
– 400 V – 630 V – 1 000 V – 1 600 V. These values conform to the basic series of preferred
values R5 and R 10 given in ISO 3.
The sum of the DC voltage and the peak AC voltage applied to the capacitor shall not exceed
the rated voltage. The value of the peak AC voltage shall not exceed the following percentages
of the rated voltage at the frequencies stated and shall be not greater than 280 V:
–    50 Hz: 20 %
–   100 Hz: 15 %
–  1 000 Hz:  3 %
– 10 000 Hz:  1 %
unless otherwise specified in the detail specification.
4.2.4 Category voltage (U )
C
The category voltage is equal to the rated voltage for upper category temperatures up to 85 °C.
For the upper category temperature of 100 °C, the voltage is 0,8 U .
R
.
For the upper category temperature of 105 °C, the voltage is 0,75 U
R
For the upper category temperature of 125 °C, the voltage is 0,5 U .
R
4.2.5 Rated temperature
The standard value of rated temperature is 85 °C.
5 Test and measurement procedures, and performance requirements
5.1 Visual examination and check of dimensions
See IEC 60384-1:2016, 4.4.
5.2 Electrical tests
5.2.1 Voltage proof
5.2.1.1 General
See IEC 60384-1:2016, 4.6, with the details of 5.2.1.2 to 5.2.1.4.
5.2.1.2 Test circuit
Delete the capacitor C .
The product of R and the nominal capacitance (C ) of the capacitor under test (C ) shall be
1 N X
smaller than or equal to 1 s and greater than 0,01 s.
R includes the internal resistance of the power supply.
R shall limit the discharge current to a value equal to or less than 1 A.
– 10 – IEC 60384-2:2021 © IEC 2021
5.2.1.3 Test conditions
The voltages in Table 1 shall be applied between the measuring points of IEC 60384-1:2016,
Table 3, for a period of 1 min for qualification approval testing and for a period of 1 s for the lot-
by-lot quality conformance testing.
Table 1 – Test points and voltages
Test point Test voltage
1 a) Grade 1: 1,6 U
R
Grade 2: 1,4 U
R
1 b), 1 c) 2 U with a minimum of 200 V
R
5.2.1.4 Requirements
See Table 9.
The occurrence of self-healing breakdowns during the application of the test voltages is allowed.
5.2.2 Capacitance
5.2.2.1 General
See IEC 60384-1:2016, 4.7, with the details of 5.2.2.2 and 5.2.2.3.
5.2.2.2 Measuring conditions
The capacitance shall be measured at, or corrected to, a frequency of 1 kHz.
For nominal capacitance values > 10 µF, 50 Hz to 120 Hz may be used, but 1 kHz shall be the
reference frequency.
The applied peak voltage at 1 kHz shall not exceed 3 % of the rated voltage, and the applied
peak voltage at 50 Hz to 120 Hz shall not exceed 20 % of the rated voltage, with a maximum of
100 V (70 V RMS).
5.2.2.3 Requirements
The capacitance shall be within the specified tolerance. See Table 9.
5.2.3 Tangent of loss angle (tan δ)
5.2.3.1 General
See IEC 60384-1:2016, 4.8, with the details of 5.2.3.2 to 5.2.3.5.
5.2.3.2 Measuring conditions for measurements at 1 kHz
Tangent of loss angle shall be measured as follows:
– frequency: 1 kHz;
– peak voltage: ≤ 3 % of the rated voltage;
−4
– inaccuracy: ≤ 10 × 10 (absolute value).

5.2.3.3 Requirement for measurements at 1 kHz
Tangent of loss angle shall not exceed the applicable values shown in Table 2.
Table 2 – Tangent of loss angle requirements
Nominal capacitance
tan δ (absolute value)
Grade 1 capacitors Grade 2 capacitors
≤ 1 μF 0,008 0,01
> 1 μF 0,01 0,01
5.2.3.4 Measuring conditions for measurements at 10 kHz
For capacitors with C ≤ 1 μF, tan δ shall be measured as follows:
N
– frequency: 10 kHz;
– voltage: ≤ 1 V RMS;
-4
– inaccuracy: ≤ 10 × 10 (absolute value).
5.2.3.5 Requirement for measurements at 10 kHz
Tangent of loss angle shall be prescribed in the detail specification.
5.2.4 Insulation resistance
5.2.4.1 General
See IEC 60384-1:2016, 4.5, with the details of 5.2.4.2 to 5.2.4.5.
5.2.4.2 Preconditioning
Before measurement, the capacitor shall be fully discharged. The product of the resistance of
the discharge circuit and the nominal capacitance of the capacitor under test shall be ≥ 0,01 s
or any other value prescribed in the detail specification.
5.2.4.3 Measuring conditions
The measuring voltage shall be in accordance with IEC 60384-1:2016, 4.5.2.
The voltage shall be applied immediately at the correct value through the internal resistance of
the voltage source.
The product of the internal resistance and the nominal capacitance of the capacitor under test
shall be smaller than 1 s or any other value prescribed in the detail specification.
5.2.4.4 Requirements
The insulation resistance shall meet the requirements given in Table 3. However, in lot-by-lot
quality conformance testing, the measuring may be interrupted when the limits stated in Table 3
are reached, which can happen in under 60 s.

– 12 – IEC 60384-2:2021 © IEC 2021
Table 3 – Insulation resistance requirements
Minimum insulation
Minimum insulation
resistance between
b
Minimum RC product resistance between
terminations and
terminations
Measuring Nominal Rated
case
a
capacitance voltage
points
s MΩ MΩ
Grade 1 Grade 2 Grade 1 Grade 2
> 100 V 10 000 2 500   
> 0,33 μF
≤ 100 V 5 000 1 250
  
1a)
> 100 V   30 000 7 500 
≤ 0,33 μF
≤ 100 V   15 000 3 750 
1b), 1c) 30 000
    
a
Measuring points in accordance with Table 3 of IEC 60384-1:2016.
b
R = insulation resistance between the terminations
C = nominal capacitance
5.2.4.5 Correction factors
When the test is carried out at a temperature other than 20 °C, the result shall, when necessary,
be corrected to 20 °C by multiplying the result of the measurement by the appropriate correction
factor. In case of doubt, measurement at 20 °C is decisive. The following correction factors (see
Table 4) can be considered as an average for metallized polyethylene-terephthalate film
capacitors:
Table 4 – Correction factors
Temperature Correction factor Temperature Correction factor
°C °C
15 0,79 26 1,32
16 0,83 27 1,38
17 0,87 28 1,45
18 0,91 29 1,52
19 0,95 30 1,59
20 1,00 31 1,66
21 1,05 32 1,74
22 1,10 33 1,82
23 1,15 34 1,91
24 1,20 35 2,00
25 1,26
5.3 Robustness of terminations
5.3.1 General
See IEC 60384-1:2016, 4.13, with the details of 5.3.2 to 5.3.4.
5.3.2 Initial inspections
The capacitance shall be measured in accordance with 5.2.2.2.

The tangent of loss angle shall be measured in accordance with 5.2.3.2 or 5.2.3.4, as
appropriate.
5.3.3 Test method
See IEC 60384-1:2016, 4.13.
5.3.4 Final inspections and requirements
See Table 9.
5.4 Resistance to soldering heat
5.4.1 General
See IEC 60384-1:2016, 4.14, with the details of 5.4.2 and 5.4.3.
5.4.2 Test conditions
No pre-drying.
Method 1 (solder bath) or Method 2 (soldering iron) of IEC 60384-1:2016, 4.14, unless
otherwise specified in the detail specification.
If method 1 is applied,
– temperature of the solder bath: (260 ± 5) °C;
– immersion time: (5 ± 0,5) s or (10 ± 1) s, as specified in the detail specification.
If method 2 is applied,
– temperature of the soldering iron: (350 ± 10) °C;
– soldering iron size A;
– soldering duration time: (10 ± 1) s.
5.4.3 Final inspections and requirements
After recovery, the capacitors shall be visually examined and measured and shall meet the
requirements given in Table 9.
5.5 Solderability
5.5.1 General
See IEC 60384-1:2016, 4.15, with the details of 5.5.2 and 5.5.3.
5.5.2 Test conditions
No aging.
Temperature of the solder bath and process time for preferred solders:
– SnPb solder: (235 ± 3) °C for (2 ± 0,2) s;
– Sn96,5Ag3Cu,5 solder: (245 ± 3) °C for (3 ± 0,3) s;
– Sn99,3Cu,7 solder: (250 ± 3) °C for (3 ± 0,3) s.
The requirements for the globule test method shall be prescribed in the detail specification.

– 14 – IEC 60384-2:2021 © IEC 2021
When neither the solder bath nor the solder globule method is appropriate, the soldering iron
test shall be used with soldering iron size A.
5.5.3 Final requirements
The performance requirements are given in Table 9.
5.6 Rapid change of the temperature
5.6.1 General
See IEC 60384-1:2016, 4.16, with the details of 5.6.2 to 5.6.4.
5.6.2 Initial inspections
Initial measurements shall be made in accordance with 5.3.2.
5.6.3 Test conditions
Number of cycles: 5
Duration of exposure at the temperature limits: 30 min, unless a longer exposure times is
specified in the detail specification for large size capacitors.
5.6.4 Final inspections
See Table 9.
5.7 Vibration
5.7.1 General
See IEC 60384-1:2016, 4.17, with the details of 5.7.2 and 5.7.3.
5.7.2 Test conditions
The following degree of severity of Test Fc applies: 0,75 mm displacement or 100 m/s ,
whichever is the lower amplitude, over one of the following frequency ranges: 10 Hz to 55 Hz,
10 Hz to 500 Hz, or 10 Hz to 2 000 Hz. The total duration shall be 6 h.
The detail specification shall specify the frequency range and shall also state the mounting
method to be used. For capacitors with axial leads and intended to be mounted by the leads
only, the distance between the body and the mounting point shall be 6 mm ± 1 mm.
5.7.3 Final inspections and requirements
See Table 9.
5.8 Bump (repetitive shock)
5.8.1 General
See IEC 60384-1:2016, 4.18, with the details of 5.8.2 to 5.8.4.
The detail specification shall sate whether the bump or the shock test applied.
5.8.2 Initial inspections
Not required.
5.8.3 Test conditions
The detail specification shall state which of the following severities applies:
Total number of bumps: 1 000 or 4 000
2 2
Acceleration: 400 m/s   10 0 m/s
or
Pulse duration: 6 ms   16  ms
The detail specification shall also state the mounting method to be used. For capacitors with
axial leads and intended to be mounted by the leads only, the distance between the capacitor
body and the mounting point shall be 6 mm ± 1 mm.
5.8.4 Final inspections and requirements
The capacitors shall be visually examined and measured and shall meet the requirements given
in Table 9.
5.9 Shock
5.9.1 General
See IEC 60384-1:2016, 4.19, with the details of 5.9.2 to 5.9.4.
The detail specification shall state whether the bump or the shock test applies.
5.9.2 Initial inspections
Not required
5.9.3 Test conditions
The detail specification shall state which of the following preferred severities applies, see
Table 5.
Pulse-shape: half-sine
Table 5 – Preferred severities
Peak acceleration Corresponding duration of the pulse
ms
m/s
300 18
500 11
1 000 6
The detail specification shall also prescribe the mounting method to be used. For capacitors
with axial leads and intended to be mounted by the leads only, the distance between the body
and the mounting point shall be 6 mm ± 1 mm.
5.9.4 Final inspections and requirements
The capacitors shall be visually examined and measured and shall meet the requirements given
in Table 9.
– 16 – IEC 60384-2:2021 © IEC 2021
5.10 Climatic sequence
5.10.1 General
See IEC 60384-1:2016, 4.21, with the details of 5.10.2 to 5.10.7.
5.10.2 Initial inspections
Not required, see 5.4.3, 5.8.4 or 5.9.4 as applicable.
5.10.3 Dry heat
See IEC 60384-1:2016, 4.21.3.
5.10.4 Damp heat, cyclic, Test Db, first cycle
See IEC 60384-1:2016, 4.21.4.
5.10.5 Cold
See IEC 60384-1:2016, 4.21.5.
5.10.6 Low air pressure
5.10.6.1 General
See IEC 60384-1:2016, 4.21.6, with the details of 5.10.6.2 and 5.10.6.3.
5.10.6.2 Test condition
The test, if required in the detail specification, shall be carried out at a temperature of 15 °C to
35 °C and a pressure of 8 kPa. The duration of the test shall be 1 h.
While still at the specified low pressure and during the last 5 min of the 1 h period, the rated
voltage shall be applied.
The sample part of capacitors submitted to this test shall be subdivided into two or three parts
as necessary and each part submitted to one of the tests laid down in 4.5.3 and Table 3 of
IEC 60384-1:2016.
5.10.6.3 Final inspections and requirements
The capacitors shall be visually examined and shall meet the requirements given in Table 9.
5.10.7 Damp heat, cyclic, Test Db, remaining cycles
5.10.7.1 General
See IEC 60384-1:2016, 4.21.7, with the details of 5.10.7.2 and 5.10.7.3.
5.10.7.2 Test conditions
Within 15 min after removal from the damp heat test, the rated voltage shall be applied for 1 min
at test point A using the test circuit conditions as given in 5.2.1.
5.10.7.3 Final inspections and requirements
After recovery, the capacitors shall be visually examined and measured and shall meet the
requirements given in Table 9.

5.11 Damp heat, steady state
5.11.1 General
See IEC 60384-1:2016, 4.22, with the details of 5.11.2 to 5.11.4.
5.11.2 Initial inspections
The capacitance shall be measured in accordance with 5.2.2.2. The tangent of loss angle shall
be measured in accordance with 5.2.3.2.
5.11.3 Test conditions
Within 15 min after removal from the damp heat test, the voltage proof test in accordance with
5.2.1 shall be carried out, but with the rated voltage applied.
5.11.4 Final inspections and requirements
After recovery, the capacitors shall be visually examined and measured and shall meet the
requirements given in Table 9.
5.12 Endurance
5.12.1 General
See IEC 60384-1:2016, 4.23, with the details of 5.12.2 to 5.12.4.
5.12.2 Initial inspections
Initial measurements shall be made as prescribed by 5.3.2.
5.12.3 Test conditions
Grade 1 capacitors shall be tested for 2 000 h and grade 2 capacitors for 1 000 h as follows,
see Table 6.
Table 6 – Test conditions
Climatic categories –/85/– –/100/– –/105/– –/125/–
Temperature 8
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