ASTM_D_1867_-_13.pdf

Designation:D186713Standard Specification forCopper-Clad Thermosetting Laminates for Printed Wiring1This standard is issued under the fixed designation D1867;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers twelve grades of thermosettinglaminate with copper foil bonded to one or both surfaces.Thesecombination forms are intended primarily for use in fabricationof printed(etched)wiring or circuit boards.1.2 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are forinformation only.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D709 Specification for Laminated Thermosetting MaterialsD1711 Terminology Relating to Electrical InsulationD3636 Practice for Sampling and Judging Quality of SolidElectrical Insulating MaterialsD5109 Test Methods for Copper-Clad Thermosetting Lami-nates for Printed Wiring Boards2.2 Other Standards:MIL-P-13949 Plastic Sheet,Laminated,Metal Clad(forPrinted Wiring Boards)3NEMA Publication Number LI-143.Terminology3.1 For definitions of terms used in this standard,refer toTerminology D1711.4.Classification4.1 Base Laminate GradesWhere applicable,the dielec-tric material forming the base of the copper-clad laminate ofthe types listed in Table 1 and Table 2 shall conform to theproperty requirements of that specific grade shown in Specifi-cation D709.4.2 Copper Foil SurfacesThe surfaces shall be copperfoil,either rolled or electrodeposited,having a minimum purityof 99.50%(silver considered as equal to copper).The thick-ness tolerances of the copper foil shall conform to therequirements of Table 3.4.3 Thickness Tolerance ClassesCopper-clad laminatesare available in two classes of thickness tolerance.Class Irepresents those tolerances of standard manufacturing practice.Class II represents a closer tolerance product than Class I.Anyspecified class shall conform to the requirements shown inTable 4.4.3.1 For sheets of laminate equal to or greater than 18 by18 in.(approximately 2.3 ft2)at least 90%of all thickness testmeasurements made upon any sheet of laminate shall be withinthe limits specified in Table 4.For metric size sheets this 90%requirement shall apply to sheet sizes of 0.5 by 0.5 m or 0.25m2area.4.3.2 The deviation of any single thickness test measure-ment value(see Practice D3636)from the nominal overallthickness listed in Table 4 shall not exceed 125%of thetolerance listed in Table 4.4.3.3 Any overall laminate thickness not listed in Table 4shall meet the tolerance requirements of the next highestnominal thickness listed in Table 4.4.3.4 For cut panels(for example,laminate sheets cut toarea less than 2.3 ft2or less than 0.25 m2)at least 98%of allthickness test measurements shall be within the specifiedoverall laminate thickness tolerance values of Table 4.5.Ordering Information5.1 Orders for copper-clad laminates shall specify the gradeof laminate base(see 4.1);the type of copper foil(either rolledor electrodeposited);the nominal weight of the copper foil(see4.2);one-or two-side cladding;nominal overall laminatethickness;and the thickness tolerance class(see 4.3).1This specification is under the jurisdiction of the ASTM Committee D09 onElectrical and Electronic Insulating Materials and is the direct responsibility ofSubcommittee D09.07 on Flexible and Rigid Insulating Materials.Current edition approved Nov.1,2013.Published November 2013.Originallyapproved in 1961.Last previous edition approved in 2007 as D1867 07.DOI:10.1520/D1867-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Standardization Documents Order Desk,Bldg.4 Section D,700Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.4Available from National Electrical Manufacturers Association,2101 L St.,N.W.,Washington,DC 20037.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Detailed Requirements6.1 The laminate shall meet the requirements shown inTable 5.7.Warp or Twist7.1 The warp or twist of copper-clad laminate shall meet therequirements of Table 6.The maximum values shown in Table6 are percentage values applicable only to sheet sizes asmanufactured and to sheets cut such that neither length norwidth is