IEC 60062:2016

IEC 60062 ®
Edition 6.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Marking codes for resistors and capacitors

Codes de marquage des résistances et des condensateurs

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IEC 60062 ®
Edition 6.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Marking codes for resistors and capacitors

Codes de marquage des résistances et des condensateurs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.020 ISBN 978-2-8322-3515-7

– 2 – IEC 60062:2016 © IEC 2016
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Colour code for fixed resistors . 6
3.1 General rules . 6
3.2 Prescription of code colours . 6
3.3 Methods for marking resistance value and tolerance . 7
3.3.1 Marking of resistance values with two significant numerals . 7
3.3.2 Marking of resistance values with two significant numerals and
tolerance . 8
3.3.3 Marking of resistance values with three significant numerals and
tolerance . 8
3.4 Methods for TCR marking . 9
4 Letter and numeral code for resistance and capacitance values . 10
4.1 General rules . 10
4.2 Resistors . 11
4.2.1 The RKM code system . 11
4.2.2 Three-character code system for resistors . 13
4.2.3 The four-character code system for resistors . 14
4.3 Capacitors . 15
4.3.1 The multiplier code system for capacitors . 15
4.3.2 Three-character code systems for capacitors . 17
5 Letter code for tolerance on capacitance or resistance values . 18
5.1 General rules . 18
5.2 Coding of symmetrical relative tolerances . 18
5.3 Coding of asymmetrical relative tolerances . 19
5.4 Coding of symmetrical absolute tolerances . 19
5.5 Other coding of tolerances . 20
6 Coding of properties specific to capacitors . 20
6.1 General rules . 20
6.2 Coding of the dielectric material of plastic film capacitors . 20
7 Coding of properties specific to resistors . 20
7.1 General rules . 20
7.2 Coding of the temperature coefficient of resistance . 21
8 Date code system for capacitors and resistors . 21
8.1 General rules . 21
8.2 Two-character codes for year and month . 22
8.2.1 Choice of a repetition cycle . 22
8.2.2 Two-character codes for year and month in a twenty-year cycle . 22
8.2.3 Two-character codes for year and month in a ten-year cycle . 23
8.3 Four-character codes for year and week . 23
8.3.1 Choice of a repetition cycle . 23
8.3.2 Fully numerical four-numeral code . 23
8.3.3 Alphanumerical twenty-year cycle code . 24
8.3.4 Alphanumerical ten-year cycle code. 24
8.4 Single-character code for year and month . 24

Annex A (informative) Special three-character code system for resistors . 26
Annex X (informative) Cross-reference for references to the previous edition of this
standard . 28
Bibliography . 30

Figure 1 – Colour marking of a resistor 6,8 kΩ, tolerance ±20 % . 8
Figure 2 – Colour marking of a resistor 750 kΩ, tolerance ±5 % . 8
Figure 3 – Colour marking of a resistor 249 kΩ, tolerance ±1 % . 9
th
Figure 4 – Colour marking of a resistor with a 6 band for TCR marking . 9
th
Figure 5 – Colour marking of a resistor with an interrupted 6 band for TCR marking . 10
Figure 6 – Colour marking of a resistor using an alternative method of inter-band
colour dots for TCR coding . 10

Table 1 – Code colour prescriptions . 7
Table 2 – Coding of resistance values with up to 3 significant numerals . 12
Table 3 – Fixed length coding of resistance values with up to 3 significant numerals . 13
Table 4 – Coding of resistance values with 4 significant numerals . 13
Table 5 – Coding of resistance values in the three-character code system . 14
Table 6 – Coding of resistance values in the four-character code system . 15
Table 7 – Coding of capacitance values with up to 2 significant numerals . 16
Table 8 – Fixed length coding of capacitance values with up to 2 significant numerals . 16
Table 9 – Coding of capacitance values with 3 significant numerals . 17
Table 10 – Coding of capacitance values in the picofarad based three-character code
system . 17
Table 11 –Coding of capacitance values in the microfarad based three-character code

system . 18
Table 12 – Letter code for symmetrical relative tolerances . 19
Table 13 – Letter code for asymmetrical relative tolerances . 19
Table 14 – Letter code for symmetrical absolute tolerances of capacitors . 20
Table 15 – Letter code for the dielectric material of plastic film capacitors . 20
Table 16 – Letter code for the temperature coefficient of resistance. 21
Table 17 – Character code letters for the month . 22
Table 18 – Code letters for the year in a twenty-year cycle . 22
Table 19 – Code letters for the year in a ten-year cycle . 23
Table 20 – Single-character code for year and month at a 4-year cycle . 25
Table A.1 – Coding of the significant numerals of the E96 series . 26
Table A.2 – Coding of the multiplier . 27
Table X.1 – Cross-reference to Clauses . 28
Table X.2 – Cross-reference to Tables . 29

– 4 – IEC 60062:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARKING CODES FOR RESISTORS AND 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,
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Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
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governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
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
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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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
members of its technical committees and IEC National Committees for any personal injury, property damage or
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 60062 has been prepared by IEC technical committee 40:
Capacitors and resistors for electronic equipment.
This sixth edition cancels and replaces the fifth edition published in 2004 and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
-3
• introduction of the new code colour pink for the coding of the multiplier 10 ;
• introduction of new subclauses, 3.2 Prescription of code colours, 3.3 Methods for marking
resistance value and tolerance, 3.4 Methods for TCR marking, for improved clarity, the
subjects of colour assignment, coding of R value and tolerance, and coding of TCR is
dealt with in separate clauses;
• inclusion of illustrations for TCR marking by interrupted colour band;
• inclusion of a new subclause on a fixed length code marking, fixed length code marking of
resistance values with up to 3 significant digits, hence a fixed code length of 4 digits, and

fixed length code marking of capacitance values with up to 2 significant digits, hence a
fixed code length of 3 digits;
• introduction of two new clauses, Clause 6, Coding of properties specific to capacitors and
Clause 7, Coding of properties specific to resistors;
• introduction of Annex A, Special three character coding of resistance value with three
significant numerals.
The text of this standard is based on the following documents:
FDIS Report on voting
40/2465/FDIS 40/2473/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC 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.
The contents of the corrigendum of December 2016 have been included in this copy.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 6 – IEC 60062:2016 © IEC 2016
MARKING CODES FOR RESISTORS AND CAPACITORS

1 Scope
This International Standard specifies designation and marking codes for capacitors and
resistors.
It provides coding methods for the resistance or capacitance value and its tolerance, including
colour coding for resistors.
It provides coding for parameters specific either to capacitors, like e.g. the dielectric material,
or to resistors, like e.g. the temperature coefficient of resistance (TCR).
It also provides date code systems suitable for the marking of small components.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60063, Preferred number series of resistors and capacitors
IEC 60757, Code for designation of colours
ISO 8601, Data elements and interchange formats – Information interchange –
Representation of dates and times
3 Colour code for fixed resistors
3.1 General rules
Colour code is applied in a sequence of individual solid colour bands.
Wherever possible, the first band shall be the one nearest to the end of the resistor and the
bands shall be so placed and spaced that there can be no confusion in reading the coding.
The design width of the band used for marking the tolerance shall be at least 1,5 times the
width of the other bands in order to avoid any confusion.
NOTE  The design width is not intended to be measured.
Any additional coding shall be so applied as not to confuse the coding for value and tolerance.
Although colour bands are expected to be complete rings around the perimeter of a cylindrical
resistor body, incidental interruption of a band shall be permissible if at least two thirds of the
band is visible from any radial angle of view.
3.2 Prescription of code colours
The colours black, brown, red, orange, yellow, green, blue, violet, grey and white are used for
the coding of the figures 0 through 9 for each significant numeral. Complemented with the

colours silver, gold and pink, they are also used for the coding of the multiplier, the tolerance
and the temperature coefficient of resistance (TCR). Table 1 summarizes the colours with all
assigned parameters and their respective values.
Table 1 – Code colour prescriptions
Significant
Colour Multiplier Tolerance TCR
numeral
-6
Code Example  % 10 /K
None — — — —
±20
-3
Pink PK — 10 — —
-2
Silver SR — 10 —
±10
-1
Gold GD — 10 ±5 —
Black BK 0 1 —
±250
Brown BN 1 10
±1 ±100
Red RD 2 10 ±2 ±50
Orange OG 3 10
±0,05 ±15
Yellow YE 4 10
±0,02 ±25
Green GN 5 10 ±0,5 ±20
Blue BU 6 10
±0,25 ±10
Violet VT 7 10
±0,1 ±5
Grey GY 8 10
±0,01 ±1
White WH 9 10 — —
NOTE 1 The code letters are as defined in IEC 60757.
NOTE 2 The colours shown here as example are not intended as normative reference, but are applied for the
purpose of consistent illustration only.

3.3 Methods for marking resistance value and tolerance
3.3.1 Marking of resistance values with two significant numerals
Resistors with a tolerance of ±20 %, whose resistance values are described with two
significant numerals, are marked with a three-band colour code, consisting of two bands for
the significant numerals, followed by one band for the multiplier. The absence of the fourth
band indicates the tolerance of ±20 %. Figure 1 illustrates this with a 6,8 kΩ resistor with a
tolerance of ±20 %.
– 8 – IEC 60062:2016 © IEC 2016

IEC
Key:
st st
1: 1 band 1 numeral Blue = 6
nd nd
2: 2 band 2 numeral Grey = 8
rd 2
3: 3 band Multiplier Red = × 10
Figure 1 – Colour marking of a resistor 6,8 kΩ, tolerance ±20 %
3.3.2 Marking of resistance values with two significant numerals and tolerance
Resistors with a tolerance tighter than ±20 %, whose resistance values are described with two
significant numerals, are marked with a four-band colour code, consisting of two bands for the
significant numerals, followed by one band for the multiplier, followed by the last and wider
band showing the tolerance. Figure 2 illustrates this with a 750 kΩ resistor with a tolerance of
±5 %.
IEC
Key:
st st
1: 1 band 1 numeral Violet = 7
nd nd
2: 2 band 2 numeral Green = 5
rd 4
3: 3 band Multiplier Yellow = × 10
th
4: 4 band Tolerance Gold = ±5 %
Figure 2 – Colour marking of a resistor 750 kΩ, tolerance ±5 %
3.3.3 Marking of resistance values with three significant numerals and tolerance
Resistors, whose resistance values are described with three significant numerals, are marked
with a five-band colour code, consisting of three bands for the significant numerals, followed
by one band for the multiplier, followed by the last and wider band showing the tolerance.
Figure 3 illustrates this with a 249 kΩ resistor with a tolerance of ±1 %.

IEC
Key:
st st
1: 1 band 1 numeral Red = 2
nd nd
2: 2 band 2 numeral Yellow = 4
rd rd
3: 3 band 3 numeral White = 9
th 3
4: 4 band Multiplier Orange = × 10
th
5: 5 band Tolerance Brown = ±1 %
Figure 3 – Colour marking of a resistor 249 kΩ, tolerance ±1 %
3.4 Methods for TCR marking
Colour-code marking of the temperature coefficient shall only be used in combination with a
resistance coding for three significant numerals and is additional to the marking of resistance
value and tolerance as prescribed in 3.3.3.
One of the following methods should be used for the indication of temperature coefficients
with a code colour as prescribed in Table 1, where the tolerance band is consistently
maintained as the single wider band.
a) The TCR is marked by means of a colour band as the sixth band, as shown in Figure 4.
IEC
Key:
st st
1: 1 band 1 numeral Red = 2
nd nd
2: 2 band 2 numeral Yellow = 4
rd rd
3: 3 band 3 numeral White = 9
th 3
4: 4 band Multiplier Orange = × 10
th
5: 5 band Tolerance Brown = ±1 %
th -6
6: 6 band TCR Red = ±50 × 10 /K
th
Figure 4 – Colour marking of a resistor with a 6 band for TCR marking
NOTE The prescription of prior revisions of this standard about the sixth band to be the wider band has been
changed here as it has been found to be a reason of confusion with component users about the tolerance
marking.
b) The TCR is marked by means of an interrupted colour band as the sixth band, as shown in
Figure 5.
– 10 – IEC 60062:2016 © IEC 2016

IEC
Key:
st st
1: 1 band 1 numeral Red = 2
nd nd
2: 2 band 2 numeral Yellow = 4
rd rd
3: 3 band 3 numeral White = 9
th 3
4: 4 band Multiplier Orange = × 10
th
5: 5 band Tolerance Brown = ±1 %
th -6
6: 6 band TCR Red = ±50 × 10 /K
Figure 5 – Colour marking of a resistor
th
with an interrupted 6 band for TCR marking
c) Other method of colour marking for TCR.
Other methods of colour marking for TCR may be used if they are clearly described by the
documentation and specification of the respective resistor, and if they do not risk
confusion with any of the methods given above.
An illustration of a possible similar method is given in Figure 6, adopting the general
principles of TCR marking for a situation with insufficient axial length for a dedicated 6th
solid or interrupted band.
IEC
Key:
st st
1: 1 band 1 numeral Red = 2
nd nd
2: 2 band 2 numeral Yellow = 4
rd rd
3: 3 band 3 numeral White = 9
th 3
4: 4 band Multiplier Orange = × 10
th
5: 5 band Tolerance Brown = ±1 %
th -6
6: 6 dots TCR Red = ±50 × 10 /K
Figure 6 – Colour marking of a resistor using an alternative
method of inter-band colour dots for TCR marking
4 Letter and numeral code for resistance and capacitance values
4.1 General rules
The value code shall use 3, 4 or 5 characters consisting of 2 figures and a letter, 3 figures
and a letter, or 4 figures and a letter, as required.
The code letters replace the decimal point as shown in the respective examples below.

The value code shall be written in succession, without any space in between.
The value code may be succeeded by a code letter for tolerance as specified in Clause 5.
Any additional code letter or numeral shall appear after the tolerance letter and shall be
applied in a way not confusing the coding for value and tolerance.
The codes given in Clause 4, 5, 6 and 7 are intended for the marking of components, and are
also suitable for the building of part numbers and component ordering codes.
4.2 Resistors
4.2.1 The RKM code system
4.2.1.1 General rule
The RKM code system has emerged from the coding of resistance values in the range of
single ohm through some mega ohm, which initially required the multiplier characters R, K and
M for coding.
-3 3 6 9
The letters L, R, K, M and G are used as multipliers for 10 , 1, 10 , 10 and 10 , respectively,
of the resistance value expressed in ohm.
The letters L, R, K, M and G are consistently written as capital letters in this coding,
regardless of the convention for SI prefixes using a lower-case k as the decimal multiplier for
10 , kilo.
NOTE The letter L is introduced as a code letter since the SI prefix using a lower-case m as the decimal multiplier
-3 6
for 10 , milli, is not applicable in light of the established use of the upper-case M for 10 , mega.
4.2.1.2 Coding of resistance values with up to 3 significant numerals
The resistance value expressed in ohm is identified by a code using L, R, K, M, or G as
multiplier and as decimal point at the same time, as shown in Table 2. The length of the code
depends on the actual number of significant numerals of the resistance value.

– 12 – IEC 60062:2016 © IEC 2016
Table 2 – Coding of resistance values with up to 3 significant numerals
Resistance Code Resistance Code Resistance Code
0,1 mΩ L10
– – L15
– – 0,15 mΩ
L332
0,332 mΩ
1 mΩ 1L0 10 mΩ 10L 0,1 Ω R10
1L5 15L R15
1,5 mΩ 15 mΩ 0,15 Ω
3L32 33L2 R332
3,32 mΩ 33,2 mΩ 0,332 Ω
1 Ω 1R0 10 Ω 10R 100 Ω 100R
1R5 15R 150R
1,5 Ω 15 Ω 150 Ω
3R32 33R2 332R
3,32 Ω 33,2 Ω 332 Ω
1K0 10K 100K
1 kΩ 10 kΩ 100 kΩ
1K5 15K 150K
1,5 kΩ 15 kΩ 150 kΩ
3K32 33K2 332K
3,32 kΩ 33,2 kΩ 332 kΩ
1M0 10M 100M
1 MΩ 10 MΩ 100 MΩ
1M5 15M 150M
1,5 MΩ 15 MΩ 150 MΩ
3M32 33M2 332M
3,32 MΩ 33,2 MΩ 332 MΩ
1G0 10G 100G
1 GΩ 10 GΩ 100 GΩ
1G5 15G 150G
1,5 GΩ 15 GΩ 150 GΩ
3,32 GΩ 3G32 33,2 GΩ 33G2 332 GΩ 332G

4.2.1.3 Fixed length coding of resistance values with up to 3 significant numerals
The use of the RKM code system for the identification of resistance values in a database
related application, like e.g. in a prescription for an ordering designation, may require the use
of a fixed length code. If the resistance values to be coded consist of up to three significant
numerals, such a fixed length RKM code system has a consistent length of 4 characters, as
shown in Table 3.
Table 3 – Fixed length coding of resistance
values with up to 3 significant numerals
Resistance Code Resistance Code Resistance Code
L100
0,1 mΩ
L150
– – – – 0,15 mΩ
0,332 mΩ L332
1L00 10L0 R100
1 mΩ 10 mΩ 0,1 Ω
1,5 mΩ 1L50 15 mΩ 15L0 0,15 Ω R150
3,32 mΩ 3L32 33,2 mΩ 33L2 0,332 Ω R332
1R00 10R0 100R
1 Ω 10 Ω 100 Ω
1,5 Ω 1R50 15 Ω 15R0 150 Ω 150R
3,32 Ω 3R32 33,2 Ω 33R2 332 Ω 332R
1K00 10K0 100K
1 kΩ 10 kΩ 100 kΩ
1,5 kΩ 1K50 15 kΩ 15K0 150 kΩ 150K
3,32 kΩ 3K32 33,2 kΩ 33K2 332 kΩ 332K
1 MΩ 1M00 10 MΩ 10M0 100 MΩ 100M
1,5 MΩ 1M50 15 MΩ 15M0 150 MΩ 150M
3M32 33M2 332M
3,32 MΩ 33,2 MΩ 332 MΩ
1 GΩ 1G00 10 GΩ 10G0 100 GΩ 100G
1,5 GΩ 1G50 15 GΩ 15G0 150 GΩ 150G
3G32 33G2 332G
3,32 GΩ 33,2 GΩ 332 GΩ
4.2.1.4 Coding of resistance values with more than 3 significant numerals
Resistance values expressed by four significant numerals should be coded as in the examples
shown in Table 4.
Table 4 – Coding of resistance values with 4 significant numerals
Resistance Code
59R04
59,04 Ω
590R4
590,4 Ω
5,904 kΩ 5K904
59,04 kΩ 59K04
For the benefit of a consistent coding style, coding of resistance values with four significant
numerals should preferably be presented at a fixed length of five characters.
The same principles should be applied for the coding of resistance values with more than four
significant numerals.
4.2.2 Three-character code system for resistors
The resistance value expressed in ohm is identified by a three-character code as in the
examples shown in Table 5.
Due to the possibility of expressing only two significant numerals of a resistance value, the
three character code system is applicable to values from an E series up to E24, as defined in

– 14 – IEC 60062:2016 © IEC 2016
IEC 60063, only. Therefore it should be used for the coding of resistors with a tolerance of
5 % or wider.
Table 5 – Coding of resistance values
in the three-character code system
Resistance Code
L10 to L91
0,1 mΩ to 0,91 mΩ
1 mΩ to 9,1 mΩ 1L0 to 9L1
10 mΩ to 91 mΩ 10L to 91L
R10 to R91
0,1 Ω to 0,91 Ω
1R0 to 9R1
1 Ω to 9,1 Ω
10 Ω to 91 Ω 100 to 910
101 to 911
100 Ω to 910 Ω
102 to 912
1 kΩ to 9,1 kΩ
10 kΩ to 91 kΩ 103 to 913
100 kΩ to 910 kΩ 104 to 914
105 to 915
1 MΩ to 9,1 MΩ
10 MΩ to 91 MΩ 106 to 916
100 MΩ to 910 MΩ 107 to 917
108 to 918
1 GΩ to 9,1 GΩ
109 to 919
10 GΩ to 91 GΩ
The three-character code system is not suitable for the coding of resistance values below
0,1 mΩ, or for resistance values above 99 GΩ.
4.2.3 The four-character code system for resistors
The resistance value expressed in ohm is identified by a four-character code as in the
examples shown in Table 6.
The four-character code expresses three significant numerals of a resistance value, which
makes it applicable for values from an E48, E96 or E192 series, as defined in IEC 60063.
Therefore it should be used for the coding of resistors with a tolerance of 2 %, 1 % or tighter.

Table 6 – Coding of resistance values
in the four-character code system
Resistance Code
L100 to L976
0,1 mΩ to 0,976 mΩ
1L00 to 9L76
1 mΩ to 9,76 mΩ
10 mΩ to 97,6 mΩ 10L0 to 97L6
R100 to R976
0,1 Ω to 0,976 Ω
1R00 to 9R76
1 Ω to 9,76 Ω
10 Ω to 97,6 Ω 10R0 to 97R6
1000 to 9760
100 Ω to 976 Ω
1001 to 9761
1 kΩ to 9,76 kΩ
10 kΩ to 97,6 kΩ 1002 to 9762
1003 to 9763
100 kΩ to 976 kΩ
1004 to 9764
1 MΩ to 9,76 MΩ
10 MΩ to 97,6 MΩ 1005 to 9765
100 MΩ to 976 MΩ 1006 to 9766
1007 to 9767
1 GΩ to 9,76 GΩ
1008 to 9768
10 GΩ to 97,6 GΩ
100 GΩ to 976 GΩ 1009 to 9769
The four-character code system is not suitable for the coding of resistance values below
0,1 mΩ, or for resistance values above 999 GΩ.
4.3 Capacitors
4.3.1 The multiplier code system for capacitors
4.3.1.1 General rule
-12 -9 -6 -3
The letters p, n, µ, m and F are used as multipliers for 10 , 10 , 10 , 10 and 1,
respectively, of the capacitance value expressed in farad.
The letters p, n, µ and m are consistently written in lower-case, while the unit farad is
expressed by the upper-case letter F.
NOTE 1 Where the lower case character p is not available, an upper case character P is a suitable replacement.
NOTE 2 Where the lower case character µ is not available, a character u in lower case or in upper case is a
suitable replacement.
4.3.1.2 Coding of capacitance values with up to 2 significant numerals
The capacitance value expressed in farad is identified by a code using p, n, µ, m, or F as
multiplier and as decimal point at the same time, as shown in Table 7. The length of the code
depends on the actual number of significant numerals of the capacitance value.

– 16 – IEC 60062:2016 © IEC 2016
Table 7 – Coding of capacitance values
with up to 2 significant numerals
Capacitance Code Capacitance Code Capacitance Code
0,1 pF p10
– – – –
0,15 pF p15
1 pF 1p0 10 pF 10p 100 pF 100p
1,5 pF 1p5 15 pF 15p 150 pF 150p
1 nF 1n0 10 nF 10n 100 nF 100n
1,5 nF 1n5 15 nF 15n 150 nF 150n

1 µF 1µ0 10 µF 10µ 100 µF 100µ

1,5 µF 1µ5 15 µF 15µ 150 µF 150µ
1 mF 1m0 10 mF 10m 100 mF 100m
1,5 mF 1m5 15 mF 15m 150 mF 150m
1 F 1F0 10 F 10F 100 F 100F
1,5 F 1F5 15 F 15F 150 F 150F

4.3.1.3 Fixed length coding of capacitance values with up to 2 significant numerals
The use of the code system for the identification of capacitance values in a database related
application, like e.g. in a prescription for an ordering designation, may require the use of a
fixed length code. If the capacitance values to be coded consist of up to two significant
numerals, such a fixed length code system has a consistent length of three characters, as
shown in Table 8.
Table 8 – Fixed length coding of capacitance
values with up to 2 significant numerals
Capacitance Code Capacitance Code Capacitance Code
0,1 pF p10
– – – –
0,15 pF p15
1 pF 1p0 10 pF 10p 100 pF n10
1,5 pF 1p5 15 pF 15p 150 pF n15
1 nF 1n0 10 nF 10n 100 nF
µ10
1,5 nF 1n5 15 nF 15n 150 nF
µ15
m10
1 µF 1µ0 10 µF 10µ 100 µF
m15
1,5 µF 1µ5 15 µF 15µ 150 µF
1 mF 1m0 10 mF 10m 100 mF F10
1,5 mF 1m5 15 mF 15m 150 mF F15
1 F 1F0 10 F 10F
– –
1,5 F 1F5 15 F 15F
4.3.1.4 Coding of capacitance values with more than 2 significant numerals
Capacitance values expressed by three significant numerals should be coded as in the
examples shown in Table 9.
Table 9 – Coding of capacitance values with 3 significant numerals
Capacitance Code
33,2 pF 33p2
332 pF 332p
3,32 nF 3n32
33,2 nF 33n2
For the benefit of a consistent coding style, coding of capacitance values with three significant
numerals should preferably be presented at a fixed length of four characters.
The same principles should be applied for the coding of capacitance values with more than
three significant numerals.
4.3.2 Three-character code systems for capacitors
4.3.2.1 The picofarad based three-character code system
The capacitance value expressed in picofarad is identified by a three-character code as
illustrated in Table 10.
NOTE The picofarad based three-character code system for low or medium capacitance is typically used for
ceramic capacitors and for film capacitors.
Table 10 – Coding of capacitance values in
the picofarad based three-character code system
Capacitance Code
a
0R1 to 0R9
0,1 pF to 0,9 pF
0p1 to 0p9
a
1R0 to 9R1
1 pF to 9,1 pF
1p0 to 9p1
10 pF to 91 pF 100 to 910
100 pF to 910 pF 101 to 911
1 nF to 9,1 nF 102 to 912
10 nF to 91 nF 103 to 913
100 nF to 910 nF 104 to 914
105 to 915
1 µF to 9,1 µF
10 µF to 91 µF 106 to 916
107 to 917
100 µF to 910 µF
a
The decimal point code with a letter R may be used for coding of capacitance
in light of its
values in the picofarad based three-character code system

introduction prior to establishing "p" marking code.

4.3.2.2 The microfarad based three-character code system
The capacitance value expressed in microfarad is identified by a three-character code as
illustrated in Table 11.
NOTE The microfarad based three-character code system for large capacitance is typically used for aluminium
electrolytic capacitors and for double layer capacitors.

– 18 – IEC 60062:2016 © IEC 2016
Table 11 –Coding of capacitance values in
the microfarad based three-character code system
Capacitance Code
a
0R1 to 0R9
0,1 µF to 0,9 µF
0µ1 to 0µ9
a
1R0 to 9R1
1 µF to 9,1 µF
1µ0 to 9µ1
100 to 910
10 µF to 91 µF
101 to 911
100 µF to 910 µF
1 mF to 9,1 mF 102 to 912
10 mF to 91 mF 103 to 913
100 mF to 910 mF 104 to 914
1 F to 9,1 F 105 to 915
10 F to 91 F 106 to 916
100 F to 910 F 107 to 917
a
The decimal point code with a letter R may be used for coding of capacitance
values in the microfarad based three-character code system in light of its

introduction prior to establishing "µ" marking code.

5 Letter code for tolerance on capacitance or resistance values
5.1 General rules
If tolerance coding is desired, the code letter for tolerance shall be placed after the coding of
the capacitance or resistance value.
The code letter for tolerance shall be applied in a way which cannot lead to confusion
between the coding of the capacitance or resistance value.
5.2 Coding of symmetrical relative tolerances
The letters given in Table 12 shall be used for indicating the symmetrical relative tolerance on
resistance and capacitance values.

Table 12 – Letter code for symmetrical relative tolerances
Tolerance Code letter
%
±0,005 E
±0,01 L
±0,02 P
W
±0,05
B
±0,1
±0,25 C
±0,5 D
±1 F
G
±2
H
±3
J
±5
±10 K
±20 M
N
±30
5.3 Coding of asymmetrical relative tolerances
For the coding of asymmetrical relative tolerances, the letters given in Table 13 shall be used.
Table 13 – Letter code for asymmetrical relative tolerances
Tolerance Code letter
%
Q
-10 +30
-10 +50 T
-20 +50 S
Z
-20 +80
Asymmetrical relative tolerances as given in Table 13 are common for some types of
capacitors.
5.4 Coding of symmetrical absolute tolerances
For tolerances on capacitance values below 10 pF, relative tolerances are no longer
applicable. Then absolute tolerances, i.e. fixed values, shall be used with code letters as
given in Table 14.
– 20 – IEC 60062:2016 © IEC 2016
Table 14 – Letter code for symmetrical absolute tolerances of capacitors
Tolerance Code letter
pF
±0,1 B
±0,25 C
±0,5 D
F
±1
G
±2
5.5 Other coding of tolerances
For tolerances for which no code letter has been laid down in the tables of Clause 5, the letter
A shall be used.
The letter A indicates that the tolerance is to be identified in other documents, like e.g. a
relevant component specification.
6 Coding of properties specific to capacitors
6.1 General rules
If the coding of other properties specific to capacitors is desired, the respective code letter(s)
shall be placed after the coding of the capacitance value and of the tolerance.
The code letter(s)
...