IEC 60384-20:2008

IEC 60384-20
Edition 2.0 2008-01
INTERNATIONAL
STANDARD
QC 302000
Fixed capacitors for use in electronic equipment –
Part 20: Sectional specification – Fixed metallized polyphenylene sulfide film
dielectric surface mount d.c. capacitors

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IEC 60384-20
Edition 2.0 2008-01
INTERNATIONAL
STANDARD
QC 302000
Fixed capacitors for use in electronic equipment –
Part 20: Sectional specification – Fixed metallized polyphenylene sulfide film
dielectric surface mount d.c. capacitors

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
T
ICS 31.060.10 ISBN 2-8318-9547-2

– 2 – 60384-20 © IEC:2008(E)
CONTENTS
FOREWORD.4

1 General .6
1.1 Scope.6
1.2 Object .6
1.3 Normative references .6
1.4 Information to be given in a detail specification .6
1.4.1 Outline drawing and dimensions .7
1.4.2 Mounting .7
1.4.3 Ratings and characteristics.7
1.4.4 Marking .7
1.5 Terms and definitions .8
1.6 Marking .8
2 Preferred ratings and characteristics .9
2.1 Preferred characteristics .9
2.1.1 Preferred climatic categories .9
2.2 Preferred values of ratings .9
2.2.1 Rated capacitance (C ) .9
R
2.2.2 Tolerance on rated capacitance.9
2.2.3 Rated voltage (U ) .10
R
2.2.4 Category voltage (U ) .10
C
2.2.5 Rated temperature.10
3 Quality assessment procedures.10
3.1 Primary stage of manufacture.10
3.2 Structurally similar components.10
3.3 Certified records of released lots.10
3.4 Qualification approval.10
3.4.1 Qualification approval on the basis of the fixed sample size
procedure .10
3.4.2 Tests .11
3.5 Quality conformance inspection.16
3.5.1 Formation of inspection lots.16
3.5.2 Test schedule .17
3.5.3 Delayed delivery.17
3.5.4 Assessment levels.17
4 Test and measurement procedures.18
4.1 Mounting .18
4.2 Visual examination and check of dimensions.18
4.2.1 Visual examination .18
4.2.2 Requirements .18
4.3 Electrical tests.18
4.3.1 Voltage proof.18
4.3.2 Capacitance .19
4.3.3 Tangent of loss angle (tan δ) .19
4.3.4 Insulation resistance.20
4.4 Adhesion .21

60384-20 © IEC:2008(E) – 3 –
4.5 Bond strength of the end of plating.21
4.5.1 Initial measurement .21
4.5.2 Final inspection .21
4.6 Resistance to soldering heat .21
4.6.1 Initial measurement .21
4.6.2 Test conditions .21
4.6.3 Final inspection, measurements and requirements .21
4.7 Solderability .22
4.7.1 Test conditions .22
4.7.2 Final inspection, measurements and requirements .22
4.8 Rapid change of temperature .22
4.8.1 Initial measurements .22
4.8.2 Number of cycles: 5.22
4.8.3 Intermediate inspection .22
4.9 Climatic sequence .22
4.9.1 Initial measurements .22
4.9.2 Dry heat .22
4.9.3 Damp heat, cyclic, test Db, first cycle .22
4.9.4 Cold .22
4.9.5 Damp heat, cyclic, test Db, remaining cycles .23
4.9.6 Final inspection, measurements and requirements .23
4.10 Damp heat, steady state.23
4.10.1 Initial measurements .23
4.10.2 Final inspection, measurements and requirements .23
4.11 Endurance.23
4.11.1 Initial measurements .23
4.12 Charge and discharge .24
4.12.1 Initial measurements .24
4.13 Component solvent resistance (if applicable).24
4.14 Solvent resistance of the marking (if applicable).24

Table 1 – Fixed sample size test plan for qualification approval – Assessment level EZ.12
Table 2 – Test schedule for qualification approval.13
Table 3 – Lot-by-lot inspection .17
Table 4 – Periodic tests .18
Table 5 – Test voltages.19
Table 6 – Tangent of loss angle limits.20
Table 7 – Requirements insulation resistance .20
Table 8 – Correction factor dependent on test temperature.21
Table 9 – Endurance test Grade 1, Grade 2 and Grade 3 capacitors.23

– 4 – 60384-20 © IEC:2008(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 20: Sectional specification –
Fixed metallized polyphenylene sulfide film
dielectric surface mount d.c. 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
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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 60384-20 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 1996 and constitutes a
minor revision related to tables and references.
The text of this standard is based on the following documents:
FDIS Report on voting
40/1871/FDIS 40/1888/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.

60384-20 © IEC:2008(E) – 5 –
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The list of all parts of the IEC 60384 series, under the (new) general title Fixed capacitors for
use in electronic equipment, can be found on the IEC website.
The QC number that appears on the front cover of this publication is the specification number
in the IECQ Quality Assessment System for Electronic Components.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result 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.
A bilingual version of this publication may be issued at a later date.
The contents of the corrigendum of February 2008 have been included in this copy.

– 6 – 60384-20 © IEC:2008(E)
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 20: Sectional specification –
Fixed metallized polyphenylene sulfide film
dielectric surface mount d.c. capacitors

1 General
1.1 Scope
This part of IEC 60384 is applicable to fixed surface mount capacitors for direct current, with
metallized electrodes and polyphenylene sulfide dielectric for use in electronic equipment.
These capacitors have metallized connecting pads or soldering strips and are intended to be
mounted directly onto substrates for hybrid circuits or onto printed boards. These capacitors
may have "self-healing properties" depending on conditions of use. They are primarily
intended for applications where the a.c. component is small with respect to the rated voltage.
Capacitors for radio interference suppression are not included, but are covered by
IEC 60384-14.
1.2 Object
The object of this standard 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 shall be of equal or higher performance level, lower performance levels are not
permitted.
1.3 Normative references
The following referenced documents are indispensable for the application 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 60062, Marking codes for resistors and capacitors
IEC 60063, Preferred number series for resistors and capacitors
IEC 60068-1, Environmental testing – Part 1: General and guidance
NOTE For the tests in the IEC 60068 series of publications, the editions referenced in the applicable test clauses
of the generic specification are applicable.
IEC 60384-1:1999, Fixed capacitors for use in electronic equipment – Part 1: Generic
specification
IEC 60410, Sampling plans and procedures for inspection by attributes
ISO 3, Preferred numbers - Series of preferred numbers
1.4 Information to be given in a detail specification
Detail specifications shall be derived from the relevant blank detail specification.

60384-20 © IEC:2008(E) – 7 –
Detail specifications shall not specify requirements inferior to those of the generic, sectional
or blank detail specification. When more severe requirements are included, they shall be
listed in 1.9 of the detail specification and indicated in the test schedules, for example by an
asterisk.
NOTE The information given in 1.4.1 may for convenience, be presented in tabular form.
The following information shall be given in each detail specification and the values quoted
shall preferably be selected from those given in the appropriate clause of this sectional
specification.
1.4.1 Outline drawing and dimensions
There shall be an illustration of the capacitor as an aid to easy recognition and for comparison
of the capacitor with others. Dimensions and their associated tolerances, which affect
interchangeability and mounting, shall be given in the detail specification. All dimensions shall
preferably be stated in millimetres, however, when the original dimensions are given in
inches, the converted metric dimensions in millimetres shall be added.
Normally the numerical values shall be given for the length, width and height of the body.
When necessary, for example when a number of items (sizes and capacitance/voltage
ranges) is covered by a detail specification, 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 capacitor.
1.4.2 Mounting
The detail specification shall give guidance on methods of mounting for normal use. Mounting
for test and measurement purposes (when required) shall be in accordance with 4.1.
1.4.3 Ratings and characteristics
The ratings and characteristics shall be in accordance with the relevant clauses of this
specification, together with the following.
1.4.3.1 Rated capacitance range
See 2.2.1.
NOTE When products approved to the detail specification have different ranges, the following statement should
be added: "The range of capacitance values available in each voltage range is given on the IEC online service,
www.iecq.org/certificates."
1.4.3.2 Particular characteristics
Additional characteristics may be listed, when they are considered necessary to specify
adequately the component for design and application purposes.
1.4.3.3 Soldering
The detail specification shall prescribe the test methods, severities and requirements
applicable for the solderability and the resistance to soldering heat tests.
1.4.4 Marking
The detail specification shall specify the content of the marking on the capacitor and on the
package. Deviations from 1.6 shall be specifically stated.

– 8 – 60384-20 © IEC:2008(E)
1.5 Terms and definitions
For the purposes of this document and in addition to the applicable terms and definitions of
IEC 60384-1 the following definitions apply.
1.5.1
surface mount capacitor
capacitor whose small dimensions and nature or shape of terminations make it suitable for
surface mounting in hybrid circuits and on printed boards
1.5.2
performance grade 1 capacitors (long-life)
capacitors for long-life applications with stringent requirements for the electrical parameters
1.5.3
performance grade 2 capacitors (general purpose)
capacitors for general application where the stringent requirements for grade 1 capacitors are
not necessary
1.5.4
performance grade 3 capacitors (low power, miniature type)
miniature type capacitors having a rated voltage of less than 63 V and for which less stringent
requirements than for grade 2 capacitors are acceptable
1.5.5
rated voltage (U )
R
maximum d.c. voltage which may be applied continuously to a capacitor at the rated
temperature
NOTE The sum of the d.c. voltage and the peak a.c. voltage applied to the capacitor should not exceed the rated
voltage. The value of the peak a.c. voltage should not exceed the following percentages of the rated voltage at the
frequencies stated and should not be 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.

1.6 Marking
See 2.4 of IEC 60384-1, with the following details:
1.6.1 The information given in the marking is normally selected from the following list. The
relative importance of each item is indicated by its position in the list:
a) rated capacitance (in clear or code according to IEC 60062);

b) rated voltage (d.c. voltage may be indicated by the symbol     or );
c) tolerance on rated capacitance;
d) category voltage;
e) year and month (or week) of manufacture;
f) manufacturer's name or trade mark;
g) climatic category;
h) manufacturer's type designation;

60384-20 © IEC:2008(E) – 9 –
i) reference to the detail specification.
1.6.2 Surface mount capacitors are generally not marked on the body. If some marking can
be applied, they shall be clearly marked with as many as possible of the above items as is
considered useful. Any duplication of information in the marking on the capacitor should be
avoided.
1.6.3 Any marking shall be legible and not easily smeared or removed by rubbing with the
finger.
1.6.4 The package containing the capacitor(s) shall be clearly marked with all the
information listed in 1.6.1.
1.6.5 Any additional marking shall be so applied that no confusion can arise.
2 Preferred ratings and characteristics
2.1 Preferred characteristics
The values given in detail specifications shall preferably be selected from the following:
2.1.1 Preferred climatic categories
The surface mount capacitors covered by this specification are classified into climatic
categories according to the general rules given in IEC 60068-1.
The lower and upper category temperature 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: +100 °C, +105 °C, +125 °C and +155 °C.
Duration of the damp heat, steady state test: 4, 10, 21 and 56 days.
NOTE With continuous operation at 155 ºC in excess of the endurance test time, accelerated ageing has to be
considered (see detail specification).
The severities for the cold and dry heat tests are the lower and upper category temperatures
respectively.
2.2 Preferred values of ratings
2.2.1 Rated capacitance (C )
R
Preferred values of rated capacitance are:
1 – 1,5 – 2,2 – 3,3 – 4,7 and 6,8 and their decimal multiples.
These values conform to the E6 series of preferred values given in IEC 60063.
If other values are required they shall preferably be chosen from the E12 series.
2.2.2 Tolerance on rated capacitance
The preferred tolerances on the rated capacitance are ±5 %, ±10 % and ±20 %.

– 10 – 60384-20 © IEC:2008(E)
2.2.3 Rated voltage (U )
R
The preferred values of rated voltage are: 10 – 16 – 25 – 40 – 50 – 63 – 100 – 160 – 250 –
400 V. These values conform to the basic series of preferred values R5 given in ISO 3.
2.2.4 Category voltage (U )
C
The category voltage is:
0,8 U for upper category temperature 125 °C and
R
0,5 U for upper category temperature 155 °C, when rated temperature is 100°C.
R
for upper category temperature 125 °C and
0,8 U
R
0,5 U for upper category temperature 155 °C, when rated tempera
...