This document specifies classification rules for soft ferrite materials used in inductive components (inductors and transformers) fulfilling the requirements of the electronic industries. 
This document addresses the following issues for ferrite suppliers and users: 
• cross-reference between materials from multiple suppliers; 
• assistance to customers in understanding the published technical data in catalogues when comparing multiple suppliers; 
• guidance to customers in selecting the most applicable material for each application; 
• setting of nomenclature for IEC standards relating to ferrite; 
• establishing uniform benchmarks for suppliers for performance in new development of materials. 
The numerical values given in this document are typical values of the parameters (properties) of the related materials. Direct translation from the material specification into the core specification is not always easy or possible. 
Every detailed material and core specification should be agreed upon between the user and the manufacturer.dition 3.0 2016-11 INTERNATIONAL STANDARD Soft ferrite material classification IEC 61332:2016-11(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright ？ 2016 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, 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 i