ASTM_F_375_-_89_2015.pdf

Designation:F37589(Reapproved 2015)Standard Specification forIntegrated Circuit Lead Frame Material1This standard is issued under the fixed designation F375;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the special requirements formetal strip to be used to fabricate integrated-circuit lead framesby stamping or photochemical milling.1.2 The metals that are applicable to these parts includecopper and copper alloys,ferrous alloys usually containingnickel or cobalt or chromium,nickel and nickel alloys,andother metallic materials.1.3 The general chemical,physical,and mechanical prop-erty requirements of these materials are covered by otherASTM specifications(specifically Specifications B103/B103M,B122/B122M,B152/B152M,B162,B465,F15,F30,F31,F49 and F68),and these should be consulted for proper-ties and tempers that are different for the different metals.Formetals for which no ASTM specification is available,otherspecifications should be adopted by agreement of the partiesconcerned.1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2.Referenced Documents2.1 ASTM Standards:2B103/B103M Specification for Phosphor Bronze Plate,Sheet,Strip,and Rolled BarB122/B122M Specification for Copper-Nickel-Tin Alloy,Copper-Nickel-Zinc Alloy(Nickel Silver),and Copper-Nickel Alloy Plate,Sheet,Strip,and Rolled BarB152/B152M Specification for Copper Sheet,Strip,Plate,and Rolled BarB162 Specification for Nickel Plate,Sheet,and StripB465 Specification for Copper-IronAlloy Plate,Sheet,Strip,and Rolled BarE112 Test Methods for Determining Average Grain SizeF15 Specification for Iron-Nickel-Cobalt Sealing AlloyF30 Specification for Iron-Nickel Sealing AlloysF31 Specification for Nickel-Chromium-Iron Sealing AlloysF49 Specification for Molybdenum Strip for Electron Tubes(Withdrawn 1978)3F68 Specification for Oxygen-Free Copper in WroughtForms for Electron Devices3.Ordering Information3.1 Orders for material under this specification shall includethe following information:3.1.1 Quantity of each size,3.1.2 Material and specification number appropriate to thematerial(see 2.1),3.1.3 Temper or mechanical properties(see 4.1),3.1.4 Dimensions:thickness,width,length if applicable(see6.2 6.4),3.1.5 How furnished:coils and coil size or lengths(see10.1),3.1.6 ASTM designation,referencing this specificationnumber,and the fabricating process to be used,3.1.7 Certification or test report requirements(see 11.1),and3.1.8 Packing and marking requirements(see 12.1 and12.2).4.Materials and Manufacture4.1 The materials covered by this specification shall con-form to the chemical,physical,and mechanical propertyrequirements prescribed in the material specification coveringthe metal or alloy and the temper(see 2.1).4.2 The material shall conform to the requirements for leadframes as prescribed in this specification and shall be charac-teristically suitable for fabrication into lead frames by thefabricating process to be specified.Any special requirementsrelating to the material properties or the fabricating process,tobe specified by the user,shall be agreed upon between thesupplier and purchaser.1This specification is under the jurisdiction of ASTM Committee F01 onElectronics and is the direct responsibility of Subcommittee F01.03 on MetallicMaterials,Wire Bonding,and Flip Chip.Current edition approved July 1,2015.Published October 2015.Originallyapproved in 1973 as F375 73 T.Last previous edition approved in 2010 asF375 89(2010).DOI:10.1520/F0375-89R15.2For 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.3The last approved version of this historical standard is referenced inwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Chemical Composition5.1 The material shall conform to the requirements as tochemical composition specified for flat products in the ASTMspecification for the metal or alloy specified,unless otherwiseagreed upon between supplier and purchaser.6.Dimensions and Tolerances6.1 GeneralFor the purposes of determining conformancewith the dimensional requirements prescribed in thisspecification,any measured value outside the specified limitingvalues for any dimension shall be cause for rejection.6.2 ThicknessThe thickness tolerances shall be thoseshown in Table 1.6.3 WidthThe width of material shall conform to toler-ances shown in Table 2.6.4 LengthThe length tole