ANSI ESD S541-2008 Packaging Materials for ESD Sensitive Items.pdf
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1、 ANSI/ESD S541-2008 Reaffirmation of ANSI/ESD S541-2003 For the Protection of Electrostatic Discharge Susceptible Items Packaging Materials for ESD Sensitive Items Electrostatic Discharge Association 7900 Turin Road, Bldg. 3 Rome, NY 13440-2069 An American National Standard Approved September 29, 20
2、08ANSI/ESD S541-2008 ESD Association Standard for the Protection of Electrostatic Discharge Susceptible Items Packaging Materials for ESD Sensitive Items Approved June 8, 2008 ESD Association, Inc. ANSI/ESD S541-2008 Electrostatic Discharge Association (ESDA) standards and publications are designed
3、to serve the public interest by eliminating misunderstandings between manufacturers and purchasers, facilitating the interchangeability and improvement of products and assisting the purchaser in selecting and obtaining the proper product for his particular needs. The existence of such standards and
4、publications shall not in any respect preclude any member or non-member of the Association from manufacturing or selling products not conforming to such standards and publications. Nor shall the fact that a standard or publication is published by the Association preclude its voluntary use by non-mem
5、bers of the Association whether the document is to be used either domestically or internationally. Recommended standards and publications are adopted by the ESDA in accordance with the ANSI Patent policy. CAUTION NOTICE Interpretation of ESDA Standards: The interpretation of standards in-so-far as i
6、t may relate to a specific product or manufacturer is a proper matter for the individual company concerned and cannot be undertaken by any person acting for the ESDA. The ESDA Standards Chairman may make comments limited to an explanation or clarification of the technical language or provisions in a
7、 standard, but not related to its application to specific products and manufacturers. No other person is authorized to comment on behalf of the ESDA on any ESDA Standard. THE CONTENTS OF ESDAS STANDARDS AND PUBLICATIONS ARE PROVIDED “AS-IS,” AND ESDA MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS O
8、R IMPLIED, OF ANY KIND WITH RESPECT TO SUCH CONTENTS. ESDA DISCLAIMS ALL REPRESENTATIONS AND WARRANTIES, INCLUDING WITHOUT LIMITATION, WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE OR USE, TITLE AND NON-INFRINGEMENT. DISCLAIMER OF WARRANTIES ESDA STANDARDS AND PUBLICATIONS ARE CONSID
9、ERED TECHNICALLY SOUND AT THE TIME THEY ARE APPROVED FOR PUBLICATION. THEY ARE NOT A SUBSTITUTE FOR A PRODUCT SELLERS OR USERS OWN JUDGEMENT WITH RESPECT TO ANY PARTICULAR PRODUCT DISCUSSED, AND ESDA DOES NOT UNDERTAKE TO GUARANTY THE PERFORMANCE OF ANY INDIVIDUAL MANUFACTURERS PRODUCTS BY VIRTUE OF
10、 SUCH STANDARDS OR PUBLICATIONS. THUS, ESDA EXPRESSLY DISLAIMS ANY RESPONSIBILITY FOR DAMAGES ARISING FROM THE USE, APPLICATION, OR RELIANCE BY OTHERS ON THE INFORMATION CONTAINED IN THESE STANDARDS OR PUBLICATIONS. DISCLAIMER OF GUARANTY NEITHER ESDA, NOR ITS MEMBERS, OFFICERS, EMPLOYEES OR OTHER R
11、EPRESENTATIVES WILL BE LIABLE FOR DAMAGES ARISING OUT OF OR IN CONNECTION WITH THE USE OR MISUSE OF ESDA STANDARDS OR PUBLICATIONS, EVEN IF ADVISED OF THE POSSIBILITY THEROF. THIS IS A COMPREHENSIVE LIMITATION OF LIABILITY THAT APPLIES TO ALL DAMAGES OF ANY KIND, INCLUDING WITHOUT LIMITATION, LOSS O
12、F DATA, INCOME OR PROFIT, LOSS OF OR DAMAGE TO PROPERTY AND CLAIMS OF THIRD PARTIES. LIMITATION ON ESDAs LIABILITY Published by: Electrostatic Discharge Association 7900 Turin Road, Bldg. 3 Rome, NY 13440 Copyright 2008 by ESD Association All rights reserved No part of this publication may be reprod
13、uced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Printed in the United States of America ISBN: 1-58537-149-1ANSI/ESD S541-2008 FOREWORD Packaging is necessary to protect electronic items from physical and environmental damage du
14、ring manufacture, transportation, and storage. While most types of packaging (not for static sensitive items) provide physical and environmental protection, it also may harm static sensitive electronic items by allowing the accumulation or the discharge of static electricity. (See Annex B for device
15、 damage information.) Packaging for ESD sensitive items is commonly derived by modifying existing packaging to prevent the packaging itself from causing static damage. The packaging generally retains its physical and environmental protective qualities. ESD protective packaging has been modified furt
16、her to prevent other sources of static electricity from damaging a packaged item. This can be illustrated by considering bags. Polyethylene bags are useful packages for containing items and providing protection from physical and environmental damage. However, polyethylene bags accumulate potentially
17、 damaging amounts of static electricity. Chemicals (antistats) are added to the polyethylene bag to render it low charging. The result is a low charging (antistatic) polyethylene bag that is less likely to damage static sensitive items. By adding a conductive layer to the low charging polyethylene b
18、ag, an ESD shielding bag is created. This shielding bag is low charging, and shields packaged items from ESD and the electric field generated by other items. Other standard packaging including paper corrugate and plastic boxes, trays, and clamshells have, or are presently, following similar paths. A
19、 complete ESD control program, as defined by ANSI/ESD S20.20, requires the use of ESD protective packaging to properly manufacture, transport, and store ESD sensitive devices. This Standard provides requirements for ESD protective packaging that must be included inside and outside an Electrostatic P
20、rotected Area (EPA). Because most physical and environmental considerations can be left to traditional packaging design and testing methodologies, only the material properties that provide reduction or prevention of damage from static electricity need be addressed. This standard describes the packag
21、ing material properties needed to protect electrostatic discharge (ESD) sensitive electronic items, and references the testing methods for evaluating packaging and packaging materials for those properties. Where possible, performance limits are provided. Guidance for selecting the types of packaging
22、 with protective properties appropriate for specific applications is provided. Other considerations for protective packaging are also provided. This document is a substantial refinement of the discontinued Electronic Industries Association Standard EIA-541-1988. Updates include the adoption of surfa
23、ce resistance (ohms) in place of surface resistivity (ohms/square), volume resistance (ohms) in place of volume resistivity (ohm-cm), a shielding test that allows penetrating energy (nanoJoules) to be calculated in place of a voltage measurement (volts), and limits the use of static decay testing. R
24、esistance is no longer the only property that is used to classify ESD packaging. Low Charging, Electric Field Shielding and Direct Discharge Shielding have been added. i ANSI/ESD S541-2008 This standard was originally designated ANSI/ESD S541-2003 and was approved on February 9, 2003. Standard ANSI/
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