ASTM International - ASTM F375-89(1999)
Standard Specification for Integrated Circuit Lead Frame Material
|Publication Date:||1 January 1999|
|ICS Code (Mechanical structures for electronic equipment):||31.240|
1.1 This specification covers the special requirements for metal strip to be used to fabricate integrated-circuit lead frames by stamping or photochemical milling.
1.2 The metals that are applicable to these parts include copper and copper alloys, ferrous alloys usually containing nickel or cobalt or chromium, nickel and nickel alloys, and other metallic materials.
1.3 The general chemical, physical, and mechanical property requirements of these materials are covered by other ASTM specifications (specifically Specifications B103/ B103M, B122/B122M, B152, B162, B465, F15, F30, F31, F49 and F68), and these should be consulted for properties and tempers that are different for the different metals. For metals for which no ASTM specification is available, other specifications should be adopted by agreement of the parties concerned.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.