IEC 60384-3:2016

IEC 60384-3 ®
Edition 4.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed capacitors for use in electronic equipment –
Part 3: Sectional specification – Surface mount fixed tantalum electrolytic
capacitors with solid (MnO ) electrolyte
Condensateurs fixes utilisés dans les équipements électroniques –
Partie 3: Spécification intermédiaire – Condensateurs fixes électrolytiques
au tantale pour montage en surface, à électrolyte solide (MnO )
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IEC 60384-3 ®
Edition 4.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed capacitors for use in electronic equipment –

Part 3: Sectional specification – Surface mount fixed tantalum electrolytic

capacitors with solid (MnO ) electrolyte

Condensateurs fixes utilisés dans les équipements électroniques –

Partie 3: Spécification intermédiaire – Condensateurs fixes électrolytiques

au tantale pour montage en surface, à électrolyte solide (MnO )
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.060.30 ISBN 978-2-8322-3508-9

– 2 – IEC 60384-3:2016 © IEC 2016
CONTENTS
FOREWORD . 5
1 General . 7
1.1 Scope . 7
1.2 Object . 7
1.3 Normative references . 7
1.4 Information to be given in a detail specification . 8
1.4.1 General . 8
1.4.2 Outline drawing and dimensions . 8
1.4.3 Mounting . 8
1.4.4 Ratings and characteristics . 8
1.4.5 Marking . 9
1.5 Terms and definitions . 9
1.6 Marking . 9
1.6.1 General . 9
1.6.2 Information for marking . 9
1.6.3 Marking on capacitors . 9
1.6.4 Marking on packaging . 10
2 Preferred ratings and characteristics . 10
2.1 Preferred characteristics . 10
2.2 Preferred values of ratings . 10
2.2.1 Nominal capacitance (C ) . 10
N
2.2.2 Tolerance on nominal capacitance . 11
2.2.3 Rated voltage (U ) . 11
R
2.2.4 Category voltage (U ) . 11
C
2.2.5 Surge voltage (U or U ) . 11
RS CS
2.2.6 Rated temperature . 11
3 Quality assessment procedures . 12
3.1 Primary stage of manufacture . 12
3.2 Structurally similar components . 12
3.3 Certified test records of released lots . 12
3.4 Qualification approval procedures . 12
3.4.1 General . 12
3.4.2 Qualification approval on the basis of the fixed sample size procedure . 12
3.4.3 Tests . 13
3.5 Quality conformance inspection . 20
3.5.1 Formation of inspection lots . 20
3.5.2 Test schedule . 20
3.5.3 Delayed delivery . 20
3.5.4 Assessment levels . 20
4 Test and measurement procedures . 21
4.1 Drying . 22
4.2 Measuring conditions . 22
4.3 Mounting . 22
4.3.1 General . 22
4.3.2 Initial inspection . 22
4.3.3 Final inspections . 22

4.4 Visual examination and check of dimensions . 22
4.4.1 General . 22
4.4.2 Visual examination and check of dimensions . 22
4.4.3 Requirements . 22
4.5 Electrical tests . 22
4.5.1 Leakage current . 22
4.5.2 Capacitance . 23
4.5.3 Tangent of loss angle (tan δ) . 23
4.5.4 Impedance (if required) . 23
4.5.5 Equivalent series resistance (ESR) (if required) . 24
4.6 Resistance to soldering heat . 24
4.6.1 General . 24
4.6.2 Test conditions . 24
4.6.3 Recovery . 24
4.6.4 Final inspections and requirements . 25
4.7 Solderability . 25
4.7.1 General . 25
4.7.2 Test conditions . 25
4.7.3 Final inspections and requirements . 25
4.8 Shear test . 25
4.8.1 General . 25
4.8.2 Final inspections and requirements . 25
4.9 Substrate bending test . 25
4.9.1 General . 25
4.9.2 Final inspections and requirements . 25
4.10 Rapid change of temperature . 25
4.10.1 General . 25
4.10.2 Initial inspection . 25
4.10.3 Test conditions . 25
4.10.4 Recovery . 26
4.10.5 Final inspections and requirements . 26
4.11 Climatic sequence (if required) . 26
4.11.1 General . 26
4.11.2 Initial inspections . 26
4.11.3 Dry heat . 26
4.11.4 Damp heat, cyclic, test Db, first cycle . 26
4.11.5 Cold . 26
4.11.6 Damp heat, cyclic, test Db, remaining cycles . 26
4.11.7 Recovery . 26
4.11.8 Final inspections and requirements . 26
4.12 Damp heat, steady state (if required) . 26
4.12.1 General . 26
4.12.2 Initial inspections . 27
4.12.3 Test conditions . 27
4.12.4 Recovery . 27
4.12.5 Final inspections and requirements . 27
4.13 Characteristics at high and low temperature . 27
4.13.1 General . 27
4.13.2 Inspections and requirements . 27

– 4 – IEC 60384-3:2016 © IEC 2016
4.14 Surge voltage . 27
4.14.1 General . 27
4.14.2 Initial inspections . 27
4.14.3 Test conditions . 27
4.14.4 Recovery . 28
4.14.5 Final inspections and requirements . 28
4.15 Endurance . 28
4.15.1 General . 28
4.15.2 Initial inspections . 28
4.15.3 Test conditions . 28
4.15.4 Recovery . 28
4.15.5 Final inspections and requirements . 29
4.16 Reverse voltage (if required) . 29
4.16.1 Initial inspections . 29
4.16.2 Test conditions . 29
4.16.3 Recovery . 29
4.16.4 Final inspections and requirements . 29
4.17 Component solvent resistance (if required) . 29
4.18 Solvent resistance of the marking (if required) . 29
4.19 High surge current (if required) . 29
Bibliography . 30

Table 1 – Letter code and digit . 10
Table 2 – Category voltages and surge voltages . 11
Table 3 – Sampling plan for qualification approval, assessment level EZ . 14
Table 4 – Test schedule for qualification approval . 15
Table 5 – Lot-by-lot inspection . 21
Table 6 – Periodic inspection . 21
Table 7 – Test temperatures . 28

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

Part 3: Sectional specification – Surface mount fixed tantalum
electrolytic capacitors with solid (MnO ) electrolyte
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,
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agreement between the two organizations.
2) The formal decisions or agreements of 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
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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between 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
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
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
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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 60384-3 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
This fourth edition cancels and replaces the third edition published in 2006 and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Revision of the structure in accordance with ISO/IEC Directives, Part 2:2011 (sixth edition)
to the extent practicable, and harmonization between other similar kinds of documents.
b) In addition, Clause 4 and all the tables have been reviewed in order to prevent duplications
and contradictions.
The text of this standard is based on the following documents:

– 6 – IEC 60384-3:2016 © IEC 2016
FDIS Report on voting
40/2464/FDIS 40/2470/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 list of all the parts of the IEC 60384 series, 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 publication will remain unchanged until
the stability date indicated on the IEC website 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.
FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 3: Sectional specification – Surface mount fixed tantalum
electrolytic capacitors with solid (MnO ) electrolyte
1 General
1.1 Scope
This part of IEC 60384 applies to fixed tantalum electrolytic surface mount capacitors with
solid (MnO ) electrolyte primarily intended for d.c. applications for use in electronic equipment.
These capacitors are primarily intended for use in electronic equipment to be mounted directly
on substrates for hybrid circuits or to printed boards.
Capacitors for special-purpose applications may need additional requirements.
The following two styles are considered:
– Style 1: Capacitors protected with external materials;
– Style 2: Capacitors unprotected with external materials.
1.2 Object
The object of this standard is to prescribe preferred ratings and characteristics and to select
from IEC 60384-1:2016 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 should be of equal or higher performance level, because lower performance
levels are not permitted.
1.3 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 60062, Marking codes for resistors and capacitors
IEC 60063, 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 60417, Graphical symbols for use on equipment
IEC 61193-2:2007, Quality assessment system – Part 2: Selection and use of sampling
plans for inspection of electronic components and packages
ISO 3, Preferred numbers – Series of preferred numbers

– 8 – IEC 60384-3:2016 © IEC 2016
1.4 Information to be given in a detail specification
1.4.1 General
Detail specifications shall be derived from the blank detail specification.
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.
The information given in 1.4.2 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.
1.4.2 Outline drawing and dimensions
There shall be an illustration of the capacitors as an aid to easy recognition and for
comparison of the capacitors 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.
The numerical values on the body shall be given as follows:
– general: width, length and height.
The numerical values on the terminals shall be given as follows:
– terminals: width, length and spacing.
When a number of case sizes are 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.
1.4.3 Mounting
The method of mounting for tests and measurements are given in 4.3. The detail specification
shall specify the methods of mounting for normal use.
1.4.4 Ratings and characteristics
1.4.4.1 General
The ratings and characteristics shall be given in accordance with the relevant clauses of this
specification, including the items as specified below.
1.4.4.2 Nominal capacitance range
See 2.2.1.
When products approved to the detail specification have different nominal capacitance ranges,
the following statement should be added:

”The nominal capacitance range available in each voltage range is given in the register of
approvals, available for example on the IECQ on-line certificate system website
www.iecq.org”.
1.4.4.3 Particular characteristics
Additional characteristics may be listed, when they are considered necessary to specify
adequately the component for design and application purposes.
1.4.4.4 Soldering
The detail specification shall specify the test methods, severities and requirements applicable
for the solderability and the resistance to soldering heat tests.
1.4.5 Marking
The detail specification shall specify the content of the marking on the capacitor and on the
packaging. Any deviations from 1.6 shall be stated in the detail specification.
1.5 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60384-1:2016, as
well as the following apply.
1.5.1
capacitance
capacitance of an equivalent circuit having capacitance and
resistance in series measured with alternating current of approximately sinusoidal waveform
at a specified frequency
1.6 Marking
1.6.1 General
See IEC 60384-1:2016, 2.4, with the following details.
1.6.2 Information for marking
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) polarity of the terminations (unless identified by the construction);
b) nominal capacitance;
c) rated voltage (d.c. voltage may be indicated by the symbol: (IEC 60417-5031:2002)
or  );
d) tolerance on nominal capacitance;
e) year and month (or, year and week) of manufacture;
f) manufacturer's name and/or trade mark;
g) manufacturer's type designation;
h) reference to the detail specification.
1.6.3 Marking on capacitors
Polarity of the terminations shall be marked. Others are marked as necessary.
Any marking shall be legible and not easily smeared or removed by rubbing with the finger.

– 10 – IEC 60384-3:2016 © IEC 2016
Where space does not permit the marking of the capacitor in accordance with IEC 60062 the
following code may be used.
a) Capacitance coding
The nominal capacitance value code in picofarad is given in Table 1.
Table 1 – Letter code and digit
Letter Value Digit Multiplier
−1
A 1,0 9 10
C 1,2 0 10
E 1,5 1 10
G 1,8 2 10
J 2,2 3 10
L 2,7 4 10
N 3,3 5 10
Q 3,9 6 10
S 4,7 7 10
U 5,6 8 10
W 6,8
Y 8,2
NOTE In Table 1 the capacitance is indicated in picofarad, given as the reference standard. The nominal
capacitance value is indicated in microfarad (µF) according to 2.2.1.
b) Voltage coding
For code letters for marking, see the detail specification.
1.6.4 Marking on packaging
The packaging containing the capacitors should be clearly marked with all the information
listed in 1.6.2 as necessary.
2 Preferred ratings and characteristics
2.1 Preferred characteristics
Preferred climatic categories shall only be given in the preferred characteristics.
The capacitors covered by this specification are classified into climatic categories according
to the general rules given in IEC 60068-1:2013, Annex A.
The lower and upper category temperature shall be taken from the following:
– lower category temperature: –55 °C;
– upper category temperature: +85 °C and +125 °C.
The severities for cold and dry heat tests are the lower and upper category temperatures
respectively.
2.2 Preferred values of ratings
2.2.1 Nominal capacitance (C )
N
Preferred values of nominal capacitance are indicated in microfarad (µF).

Preferred values of nominal capacitance shall be taken from the E6 series of IEC 60063, as
follows:
1,0 – 1,5 – 2,2 – 3,3 – 4,7 – 6,8;
n
and their decimal multiples (×10 , n: integer).
2.2.2 Tolerance on nominal capacitance
Preferred values of tolerances on nominal capacitance are:
–10 % to +10 % and –20 % to +20 %.
2.2.3 Rated voltage (U )
R
The preferred values of rated d.c. voltages taken from the R 10 and R 20 series of ISO 3 are:
– from R 10:+1,0 – 1,25 – 1,6 – 2,0 – 2,5 – 3,15 – 4,0 – 5,0 – 6,3 – 8,0;
– from R 20:+3,5 – 4,5;
n
and their decimal multiples (×10 , n: integer).
2.2.4 Category voltage (U )
C
The category voltages for capacitors having an upper category temperature of +125 °C are
given in Table 2.
2.2.5 Surge voltage (U or U )
RS CS
The surge voltage shall be given in Table 2.
NOTE U is the surge voltage to rated voltage.
RS
U is the surge voltage to category voltage.
CS
Table 2 – Category voltages and surge voltages
Dimensions in volt
U 2,5 4 6,3 10 16 20 25 35 40 50 63 100
R
U 1,6 2,5 4,0 6,3 10 13 16 22 25 32 40 63
C
U 3,3 5,2 8,0 13 20 26 33 46 52 65 80 130
RS
U 2,0 3,3 5,2 8,0 13 16 20 29 33 42 52 80
CS
2.2.6 Rated temperature
The standard value of the rated temperature is +85 °C, unless otherwise specified in the detail
specification.
—————————
ISO 3 indicates the value 3,55 for R 20.

– 12 – IEC 60384-3:2016 © IEC 2016
3 Quality assessment procedures
3.1 Primary stage of manufacture
For capacitors with solid electrolyte, the primary stage of manufacture is the formation of the
anode body.
3.2 Structurally similar components
Capacitors, considered as being structurally similar, are capacitors produced with similar
processes and materials, though they may be of different case sizes and values.
3.3 Certified test records of released lots
The information required in IEC 60384-1:2016, Q.1.5 shall be made available when prescribed
in the detail specification and when requested by a purchaser. After the endurance test, the
required parameters are the capacitance change, tangent of loss angle and the leakage
current.
3.4 Qualification approval procedures
3.4.1 General
The procedures for qualification approval testing are given in IEC 60384-1:2016, Clause Q.2.
The schedule to be used for qualification approval testing on the basis of lot-by-lot and
periodic tests is given in 3.5. The procedure using a fixed sample size schedule is given in
3.4.2 and 3.4.3.
3.4.2 Qualification approval on the basis of the fixed sample size procedure
The fixed sample size procedure is described in IEC 60384-1:2016, Q.2.4. The sample shall
be representative of the range of capacitors for which approval is sought. The samples may
be the whole or part of the range given in the detail specification.
The sample shall consist of four specimens having the maximum and minimum voltages and,
for these voltages, the maximum and minimum case size. When there are more than four case
sizes, an intermediate case size shall also be tested. In each of these case size/voltage
combinations (values), the maximum capacitance shall be chosen. Thus, for the approval of a
range, testing is required of either four or six values. When the range consists of less than
four values, the number of specimens to be tested shall be that required for four values.
Two (for 6 values) or three (for 4 values) per value may be used as replacements for
specimens, which are non-conforming because of incidents not attributable to the
manufacturer.
The numbers given in Group 0 assume that all groups are applicable. If this is not so, the
numbers may be reduced accordingly.
When additional groups are introduced into the qualification approval test schedule, the
number of specimens required for Group 0 shall be increased by the same number as that
required for the additional groups.
Table 3 gives the number of samples to be tested in each group or subgroup together with the
permissible number of non-conforming items for qualification approval tests.

3.4.3 Tests
The complete series of tests specified in Table 3 and Table 4 are required for the approval of
capacitors covered by one detail specification. The tests of each group shall be carried out in
the order given.
The whole sample shall be subjected to the tests of Group 0 and then divided for the other
groups.
Specimens found to be non-conforming in the tests of Group 0 shall not be used for the other
groups.
Approval is granted when the number of non-conforming items is zero.
Table 3 and Table 4 together form the fixed sample size test schedule for the qualification
approval on the basis of the fixed sample size procedure.
Table 3 gives the number of the samples and permissible non-conforming items for each test
or test groups.
Table 4 gives a summary of the test conditions and performance requirements, and choices of
the test conditions and performance requirements in the detail specification.
The test conditions and performance requirements for the qualification approval on the basis
of the fixed sample size procedure should be identical to those for quality conformance
inspection given in the detail specification.

– 14 – IEC 60384-3:2016 © IEC 2016
Table 3 – Sampling plan for qualification approval, assessment level EZ
Group no. Test Subclause Number of Permissible
specimens number of non-
conforming
items
d
n c
b
e
0 High surge current 4.19
124+12 0
Visual examination 4.4
Dimensions 4.4
Leakage current 4.5.1
Capacitance 4.5.2
Tangent of loss angle 4.5.3
b
Impedance 4.5.4
b
Equivalent series resistance 4.5.5
Spare specimens
1A Resistance to soldering heat 4.6 12 0
b
Component solvent resistance 4.17
1B Solderability 4.7 12 0
b
Solvent resistance of the marking 4.18
c
2 Substrate bending test 4.9 12 0
a f
3 Mounting 4.3 88 0
Visual examination 4.4
Leakage current 4.5.1
Capacitance 4.5.2
Tangent of loss angle 4.5.3
b
Impedance 4.5.4
b
Equivalent series resistance 4.5.5
3.1 Shear test 4.8 20 0
Rapid change of temperature 4.10
b
Climatic sequence (Style 1 only) 4.11
b
3.2 Damp heat steady state (Style 1 only) 4.12 20 0
3.3 Endurance 4.15 20 0
3.4 Characteristics at high and low temperature 4.13 12 0
3.5A Surge voltage 4.14 8 0
b
3.5B Reverse voltage 4.16 8 0
a
The value of these measurements serve as initial measurements for the tests of Group 3.
b
If required.
c
Not applicable to capacitors, which shall be mounted on alumina substrates only, according to their detail
specification.
d
For case size/voltage combinations, see 3.4.2.
e
Spare specimens.
f
The capacitors found non-conforming after mounting shall not be taken into account when calculating the
permitted non-conforming items for the following tests. They shall be replaced by spare capacitors.

Table 4 – Test schedule for qualification approval (1 of 5)
a a
Clause number and D or Conditions of test Number of specimens Performance requirements

a b
test , inspection items ND and measurements (n) and number of
permissible non-
conforming items (c)
Group 0 ND See Table 3
4.19 High surge See See IEC 60384-1:2016, 4.39
d
current IEC 60384-1:2016,
4.39
4.4 Visual See 4.4.2 Legible marking and as
examination specified in the detail
specification
4.4 Dimensions See 4.4.2 See detail specification
(Detail)
4.5.1 Leakage current See 4.5.1.2
≤0,02 C U or ≤1 µA,
N R
whichever is the greater (at
e
20 ºC ± 2 ºC)
4.5.2 Capacitance See 4.5.2.2 Within specified tolerance
4.5.3 Tangent of loss See 4.5.3.2 See detail specification
angle
d
Impedance See 4.5.4.2 See detail specification
Equivalent series See 4.5.5.2 See detail specification
d
resistance
Group 1A D See Table 3
4.6 Resistance to See 4.6.2 See detail specification
soldering heat
4.6.3 Recovery See 4.6.3
Final inspections
Visual examination See 4.4.2 No visible damage
Legible marking
Capacitance See 4.5.2.2 See detail specification
Tangent of loss angle See 4.5.3.2 See detail specification
d
Impedance See 4.5.4.2 See detail specification
Equivalent series See 4.5.5.2 See detail specification
d
resistance
4.17 Component See See IEC 60384-1:2016, 4.31
solvent IEC 60384-1:2016,
d
resistance 4,31
– 16 – IEC 60384-3:2016 © IEC 2016
Table 4 (2 of 5)
a
Clause number and D or Conditions of Number of specimens Performance requirements
a b a
test , inspection items ND test and (n) and number of

measurements permissible non-
conforming items (c)
Group 1B D See Table 3
4.7 Solderability See
IEC 60384-1:2016,
4.15
Final inspections
Visual inspection See 4.4.2 The areas and edges to be
examined as defined in the detail
specification shall be covered
with a new solder coating with no
more than a small amount of
scattered imperfections such as
pinholes or un-wetted or de-
wetted areas.
These imperfections shall not be
concentrated in one area. In case
of lead solder, it shall be
...