WG 10 - TC 51/WG 10

IEC 62333-3:2010 provides characterization of parameters for electromagnetic noise suppression sheet (NSS) for digital devices and equipment used in a frequency range between 30 MHz to 30 GHz. Guidance is given for uniform presentation of the properties of noise suppression sheet, intended for use in manufacturers and users technical data. NSS suppresses noise at its source, rather than absorbing noise at a distance. Therefore NSS is distinguished from RF wave absorbers used in free space. This standard addresses the following purposes of NSS manufacturers and users:
- it assists users in understanding the published technical data in catalogues;
- it guides users in selecting the most preferable NSS for each application;
- it establishes measurement benchmarking for manufacturers of performance in new development of NSS; and
- it maintains high reliability of NSS and applied products.
The numerical values given in this standard are typical values of parameters (properties) of the related NSS. The purpose of NSS testing is the benchmarking of materials. Predictions of specific device performance values are not always easy or even possible. Every detailed material and NSS specification should be agreed between the user and the manufacturer.

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. Gives also guidance for uniform presentation of the properties of a noise suppression sheet, intended for use in manufactures' technical data. Is to be used with IEC 62333-2.

IEC 62333-2:2006 specifies the methods for measuring the electromagnetic characteristics of a noise suppression sheet. Those methods are intended to provide useful and repeatable measurements to characterize the performance of the noise suppression sheets, so that manufacturers and their customers are able to obtain the same results.
This publication is to be read in conjunction with IEC 62333-1:2006.