Noise suppression sheet for digital devices and equipment -- Part 1: Definitions and general properties

This part of IEC 62333 provides terms and definitions for an electromagnetic noise suppression sheet for digital devices and equipment used in a frequency range of between 30 MHz to 30 GHz, and refers to the influence on the signal by usage of a noise suppression sheet. Guidance is also given for uniform presentation of the properties of a noise suppression sheet, intended for use in manufactures' technical data. A noise suppression sheet is distinguished from RF wave absorbers used in free space. This part of IEC 62333 is limited to establishing terms and definitions. It constitutes a concise reference for Part 2 of the standard. Part 2 specifies in detail the measurement of parameters defined in Part 1. The two parts of IEC 62333 are therefore closely related, and are intended to be used together. noise suppression sheet: sheet which enables noise suppression and is composed of magnetic or dielectric or conductive material with electromagnetic losses.

Rauschunterdrückungsschicht für digitale Geräte und Einrichtungen -- Teil 1: Begriffe und allgemeine Eigenschaften

Plaque réduisant le bruit des dispositifs et appareils numériques -- Partie 1: Définitions et propriétés générales

Protišumni list za digitalne naprave in opremo – 1. del: Definicije in splošne lastnosti (IEC 62333-1:2006)

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SLOVENSKI SIST EN 62333-1:2006

oct 2006
Protišumni list za digitalne naprave in opremo – 1. del: Definicije in splošne
lastnosti (IEC 62333-1:2006)
Noise suppression sheet for digital devices and equipment – Part 1: Definitions and
general properties (IEC 62333-1:2006)
ICS 33.160.01 Referenčna številka
SIST EN 62333-1:2006(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EN 62333-1

July 2006

ICS 29.100.10

English version

Noise suppression sheet for digital devices and equipment
Part 1: Definitions and general properties
(IEC 62333-1:2006)

Plaque réduisant le bruit des dispositifs  Rauschunterdrückungsschicht für
et appareils numériques digitale Geräte und Einrichtungen
Partie 1: Définitions et propriétés Teil 1: Begriffe und allgemeine
générales Eigenschaften
(CEI 62333-1:2006) (IEC 62333-1:2006)

This European Standard was approved by CENELEC on 2006-06-01. 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 Central Secretariat or to any CENELEC member.

This European Standard exists in two official versions (English and 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
Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62333-1:2006 E

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EN 62333-1:2006 - 2 -
The text of document 51/852/FDIS, future edition 1 of IEC 62333-1, prepared by IEC TC 51, Magnetic
components and ferrite materials, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 62333-1 on 2006-06-01.
This Standard is to be used in conjunction with EN 62333-2.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-03-01
– latest date by which the national standards conflicting
(dow) 2009-06-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
Endorsement notice
The text of the International Standard IEC 62333-1:2006 was approved by CENELEC as a European
Standard without any modification.

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- 3 - EN 62333-1:2006

Annex ZA

Normative references to international publications
with their corresponding European publications

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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

Publication Year Title EN/HD Year

IEC 60050 Series International Electrotechnical Vocabulary - -

1) 2)
IEC 62333-2 - Noise suppression sheet for digital devices EN 62333-2 2006
and equipment
Part 2: Measuring methods

Undated reference.
Valid edition at date of issue.

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STANDARD 62333-1

First edition

Noise suppression sheet for digital
devices and equipment –
Part 1:
Definitions and general properties

 IEC 2006  Copyright - all rights reserved
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 the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: Web:
Commission Electrotechnique Internationale F
International Electrotechnical Commission
For price, see current catalogue

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– 2 – 62333-1  IEC:2006(E)


Part 1: Definitions and general properties

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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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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
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence

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