EN 60195:2016

SLOVENSKI STANDARD
01-oktober-2016
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Method of measurement of current noise generated in fixed resistors (IEC 60195:2016)
Ta slovenski standard je istoveten z: EN 60195:2016
ICS:
17.140.20 Emisija hrupa naprav in Noise emitted by machines
opreme and equipment
31.040.10 Fiksni upor Fixed resistors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60195
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2016
ICS 31.040.10
English Version
Method of measurement of current noise generated in fixed
resistors
(IEC 60195:2016)
Méthode pour la mesure du bruit produit en charge par les Messverfahren für das Stromrauschen in Festwiderständen
résistances fixes (IEC 60195:2016)
(IEC 60195:2016)
This European Standard was approved by CENELEC on 2016-05-12. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60195:2016 E
European foreword
The text of document 40/2431/FDIS, future edition 2 of IEC 60195, prepared by IEC/TC 40
“Capacitors and resistors for electronic equipment" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN 60195:2016.

The following dates are fixed:
(dop) 2017-02-12
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2019-05-12
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60195:2016 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60027 (series) NOTE Harmonized as EN 60027 (series).

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60068-1 2013 Environmental testing -- Part 1: General EN 60068-1 2014
and guidance
IEC 60195 ®
Edition 2.0 2016-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Method of measurement of current noise generated in fixed resistors

Méthode pour la mesure du bruit produit en charge par les résistances fixes

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.040.10 ISBN 978-2-8322-3272-9

– 2 – IEC 60195:2016  IEC 2016
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 6
4 Method of measurement . 7
4.1 Noise basics . 7
4.1.1 Noise . 7
4.1.2 Thermal noise . 8
4.1.3 Current noise . 8
4.2 Measurement principle . 9
4.3 Measurement system . 10
4.3.1 Proposal of a suitable measuring system . 10
4.3.2 Alternative measuring systems . 11
4.4 Measurement system requirements . 11
4.4.1 Input circuit . 11
4.4.2 Isolation resistor R . 12
M
4.4.3 DC voltage source . 12
4.4.4 DC electronic voltmeter . 12
4.4.5 Calibration resistor R . 12
Cal
4.4.6 Calibration source . 13
4.4.7 Determination of the calibration voltage . 13
4.4.8 AC band-pass amplifier . 15
4.4.9 AC r.m.s. meter . 16
4.4.10 Test fixture . 16
4.5 Verification of the measuring system . 17
4.5.1 Performance check by measurement of instrument and thermal noise . 17
4.5.2 Performance check by comparison of repeated measurements . 17
5 Measurement procedure . 18
5.1 Ambient conditions . 18
5.2 Preparation of specimen . 18
5.3 Procedure . 18
5.3.1 General . 18
5.3.2 Calibration . 18
5.3.3 Measurement of system noise S . 18
5.3.4 Measurement of total noise T . 19
5.4 Precautions . 22
6 Evaluation of measurement results . 22
6.1 Term for the contribution of system noise . 22
6.2 Determination of the current-noise index A . 24
6.3 Determination of the current-noise voltage ratio CNR . 25
U
6.4 Accuracy . 26
6.5 Requirements . 26
7 Information to be given in the relevant component specification . 26
Annex A (informative) Letter symbols and abbreviations . 27
A.1 Letter symbols . 27

IEC 60195:2016  IEC 2016 – 3 –
A.2 Abbreviations . 27
Annex X (informative) Cross-reference for references to the prior revision of this
standard . 28
Bibliography . 29

Figure 1 – Block schematic of a suitable measuring system . 11
Figure 2 – Typical transfer function of the band-pass amplifier . 16
Figure 3 – Contribution of system noise, f(T – S) . 23

Table 1 – Permissible limits of system noise . 17
Table 2 – Recommended operating conditions (1 of 2) . 20
Table 3 – Numeric values of the contribution of system noise, f(T – S) . 24
st
Table X.1 – Cross reference for references to the 1 edition of this standard . 28

– 4 – IEC 60195:2016  IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
METHOD OF MEASUREMENT OF CURRENT
NOISE GENERATED IN FIXED RESISTORS

FOREWORD
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