1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 746E Polymeric Materials Industrial Laminates, Filament Wound Tubing, Vulcanized Fibre, and Materials Used In Printed-Wiring Boards STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED
2、FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Polymeric Materials Industrial Laminates, Filament Wound Tubing, Vulcanized Fibre, and Materials Us
3、ed In Printed-Wiring Boards, UL 746E Sixth Edition, Dated August 5, 2016 Summary of Topics: This revision was issued to incorporate the following changes: 1. Split of ANSI Grade CEM-3 into Grades CEM-3.0 and CEM-3.1 2. Expansion of the Ash Content Range for Types FR-4.0 and FR-4.1 in Table 8.2 The r
4、evised requirements are substantially in accordance with Proposal(s) on this subject dated May 13, 2016 and March 31, 2017. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. All rights reserved. No part of this publ
5、ication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not
6、limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability
7、to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards
8、for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer sy
9、stem. MAY 5, 2017 UL 746E tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 5, 2017 UL 746E tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 5, 201
10、6 (Title Page Reprinted: May 5, 2017) 1 UL 746E Standard for Polymeric Materials Industrial Laminates, Filament Wound Tubing, Vulcanized Fibre, and Materials Used In Printed-Wiring Boards First Edition November, 1985 Second Edition February, 1994 Third Edition June, 2000 Fourth Edition April, 2006 F
11、ifth Edition April, 2010 Sixth Edition August 5, 2016 This ANSI/UL Standard for Safety consists of the Sixth Edition including revisions through May 5, 2017. The most recent designation of ANSI/UL 746E as an American National Standard (ANSI) occurred on May 5, 2017. ANSI approval for a standard does
12、 not include the Cover Page, Transmittal Pages and Title Page. Any other portions of this ANSI/UL standard that were not processed in accordance with ANSI/UL requirements are noted at the beginning of the impacted sections. Comments or proposals for revisions on any part of the Standard may be submi
13、tted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at https:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Stand
14、ards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 746E-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGU
15、ST 5, 2016 UL 746E 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .6 2 Glossary .6 3 Units of Measurement 12 4 Measurement Accuracy and Testing Conditions .12 5 Supplementary Test Procedur
16、es .13 6 References 13 INDUSTRIAL LAMINATES 7 General .14 8 Abbreviated Test Program 27 9 Full Test Program 31 10 Ultrathin Laminate and Prepreg Test Program 37 10.1 General .37 10.2 UL/ANSI ultrathin laminates and prepreg 39 10.3 Non-UL/ANSI ultrathin laminate and prepreg test program .43 10.4 Inte
17、rmixing of materials that are not generically identical 44 11 Dielectric Materials Intended For Use In Fabricating High Density Interconnect (HDI) Type Constructions 44 11.1 General .44 11.2 Thermal aging .45 11.3 Performance prole indexing 52 11.4 Metal clad test program .56 11.5 Test programs for
18、revising dielectric material parameters 60 VULCANIZED FIBRE 12 General 62 13 Vulcanized Fibre Test Program .63 FILAMENT WOUND TUBING 14 General .64 15 Filament Wound Tubing Test Program 65 METAL CLAD LAMINATES, METAL CLAD FLEXIBLE FILM, AND PREFABRICATED MULTILAYERED LAMINATES 16 General 66 17 Metal
19、 Clad Laminates .67 17.1 General .67 17.2 Single layer sample construction .69 17.3 Multi-layer sample construction 69 17.4 Data collection .83 17.5 Microsection analysis .85 17.6 Thermal stress .87 17.7 Bond strength delamination and blistering test .88 17.8 Delamination and blistering 89 AUGUST 5,
20、 2016 UL 746E 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 17.9 Dissimilar dielectric materials thermal cycling test 89 17.10 Flammability test 90 17.11 Additional tests .91 18 Prefabricated Multilayered Laminates Mass Lamination 91 18.1
21、 General .91 18.2 Product limitations 92 18.3 Test samples 92 18.4 Processes .92 19 Metal Clad Flexible Film 93 20 Metal-Based Laminates 93 20.1 General .93 20.2 Performance prole characteristics .93 20.3 Thermal aging .96 20.4 Metal clad metal base laminates .99 PERMANENT COATINGS 21 Permanent Coat
22、ings .100 21.1 General 100 21.2 Test samples .100 21.3 Thermal stress 101 21.4 Flammability test 101 22 Conformal Coatings 102 22.1 General 102 22.2 Test samples .103 22.3 Sample conditioning .106 22.4 Voltage transient test 109 22.5 Dielectric voltage-withstand and breakdown-voltage test .110 22.6
23、Abrasion resistance test .112 MARKING 23 Details .113 SUPPLEMENT SA - FOLLOW-UP INSPECTION SA.1 Scope .SA1 SA2 Glossary SA1 SA3 Responsibility of the Manufacturer .SA2 SA4 Responsibility of the Field Representative SA3 SA5 Selection of Samples for Follow-Up Testing .SA3 SA6 Follow-Up Test Program SA
24、4 APPENDIX A Typical IR Spectrums A1 General .A1 JANUARY 13, 2017 UL 746E 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APPENDIX B End-of-life Conditioning of Industrial Laminates B1 General .B1 AUGUST 5, 2016 UL 746E 5UL COPYRIGHTED MATE
25、RIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover test procedures to be used for the evaluation of industrial laminates, lament wound tubing, vulcanized bre, and materials for use in fabricating printed wiring bo
26、ards. 1.2 These requirements provide data with respect to the physical, electrical, ammability, thermal, and other properties of the materials, that are intended to provide guidance to the material manufacturer, the fabricator, the end product manufacturer, safety engineers and other interested part
27、ies. 2 Glossary 2.1 For the purpose of this standard the following denitions apply. 2.2 ADHESIVE A gelatinous substance such as glue or cement used to join, bond, or fasten materials or objects together. 2.3 ANISOTROPIC A material having different values for properties, such as conductivity, dependi
28、ng on the direction or dimension within the material. 2.4 AS RECEIVED Specimens or samples in an unconditioned state, prior to being subject to conditioning, or without a history of conditioning. 2.5 BASE MATERIAL An organic or inorganic insulating material used to support a pattern of conductor mat
29、erial. The base material may be rigid or exible. 2.6 BASE MATERIAL THICKNESS The thickness of the base dielectric material excluding conductive foil or material deposited on the surface of the base material. If an adhesive is used to adhere the conductor material to the base material, the adhesive t
30、hickness and application surfaces (base material sides) are indicated separately. 2.7 BIAS CUT Samples cut crosswise to the surface of the material. See Figure 7.1. 2.8 BONDING LAYER An adhesive layer used to bond discrete layers of multilayer laminate constructions. Also known as prepreg. 2.9 BUILD
31、-UP THICKNESS Overall thickness of a combination of materials. Unless otherwise indicated, the build-up thickness will refer to the overall thickness of a laminate construction where no internal or external conductor material resides. 2.10 CAP LAYER A single sided copper clad laminate bonded to the
32、external surface of the multilayer board with bonding layer material (prepreg or b-stage material). 2.11 CIRCUIT Electrical devices and elements interconnected to perform a desired electrical function. AUGUST 5, 2016 UL 746E 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIB
33、UTION WITHOUT PERMISSION FROM UL 2.12 CIRCUITRY LAYER Conductor layer or plane in or on a printed wiring board. 2.13 CLAD MATERIAL See Metal Clad Base Material. 2.14 COATING A non-metallic substance applied by some process, such as dipping, curtain coating, lm laminating, screening, spraying, or mel
34、t-ow. 2.15 CONDITIONING Exposure of test samples to an environment for a period of time, prior to or after testing and prior to evaluation. 2.16 CONDUCTIVE (ELECTRICAL) The ability of a substance or material to conduct electricity. 2.17 CONDUCTIVE FOIL A thin metal sheet intended for forming a condu
35、ctor pattern on a base material. 2.18 CONDUCTOR A trace or path for electricity to transmit in a conductor pattern. 2.19 CONDUCTOR ADHESIVE Adhesive material used to attach conductor material to a base material. 2.20 CONDUCTOR AVERAGE TRACE WIDTH The average width of a length of conductor trace. 2.2
36、1 CONDUCTOR BASE WIDTH The width of a conductor at the interface of the conductor material as determined by microsection analysis. This width is used to determine bond strength/peel strength values. 2.22 CONDUCTOR LAYER A single plane of a conductor material or pattern on a base material. 2.23 CONDU
37、CTOR MATERIAL An organic or inorganic substance capable of transmitting electricity, used for circuit conductors, including but not limited to copper, tin, nickel, gold, carbon paste, copper paste, silver paste, ruthenium oxide paste, etc. 2.24 CONDUCTOR PATTERN The path, design, or conguration of c
38、onductor material on the base material, including but not limited to conductor traces, lands, through-holes, and vias. 2.25 CONDUCTOR THICKNESS The thickness of the conductor and additional metallic platings or coatings, excluding non-conductive coatings. 2.26 CONDUCTOR TRACE A linear conductor path
39、 of a conductor circuit. 2.27 CONDUCTOR WEIGHT See Conductor Thickness. 2.28 CONDUCTOR WIDTH The width of the conductor as viewed from a top view or at the plane of the surface of a base material, whichever is less. See Conductor Base Width. 2.29 CONFORMAL COATING A protective covering applied on a
40、printed-wiring board capable of conforming to the conguration of objects coated, used to increase the dielectric voltage-withstand capability between conductors and/or to protect against environmental conditions. AUGUST 5, 2016 UL 746E 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
41、 OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.30 CONTINUITY An uninterrupted path for the ow of electrical current in a circuit. 2.31 CONSTRUCTION A variation in laminate materials, including but not limited to base material, laminate, prepreg, dielectric materials, or other insulation materials. Va
42、riations include singlelayer, multilayer, and composite constructions. 2.32 CORE MATERIAL The innermost material or base material which may be used to support a subsequent layer or layers of dielectric material and conductor pattern. Core material may be an organic or inorganic material, with or wit
43、hout integral dielectric material. Core material may be referred to as substrate material. 2.33 COUPON A test vehicle/specimen constructed to represent a production material to be used for testing. See Sample. 2.34 CURRENT The ow or movement of electrons in a conductor as a result of voltage differe
44、nce between the ends of the conductive path. 2.35 DECLAD A dielectric material from which the foil or conductive material has been removed by etching or other means. 2.36 DELAMINATION A planar separation of materials (i.e., separation between conductor and base material, prepreg, dielectric material
45、, etc.). 2.37 DESSICATOR A sealable vessel containing anhydrous calcium chloride, or other drying agent, maintained at a relative humidity not exceeding 20 percent at 23 2C. 2.38 DIELECTRIC A material capable of high resistance to the ow of electrical current and capable of being polarized by electr
46、ic eld. 2.39 DOUBLESIDED A singlelayer board construction with conductor pattern on the two external sides of the base material only. Sometimes referred to as di-clad. 2.40 END PRODUCT An individual part or assembly in its nal completed state. See End-Use Product. 2.41 END-USE PRODUCT A device or ap
47、pliance in which a printed wiring board is installed as a component. 2.42 ETCHANT A chemically reactive solution used to remove portions or all material from a base material construction. 2.43 ETCHED A laminate material in which the conductive layer has been removed by a chemical process. 2.44 ETCHI
48、NG The action of chemical, or chemical and electrolytic, removal of conductive or resistive material. AUGUST 5, 2016 UL 746E 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.45 EXTERNAL LAYER The conductor pattern on the external surface o
49、f the board construction. 2.46 FAMILY Multiple grades of materials that have identical IR spectra and performance characteristics are UL Recognized for the manufacturer as a material family (alternate grades separated by a comma) of which one grade is representative of others in the family. 2.47 FILAMENT WOUND TUBING A tube composed of continuous monolaments or yarns with controlled orientation in a matrix of cu
