GSO IEC 61249-7-1:2014
IEC 61249-7-1:1995
Gulf Standard
Current Edition
·
Approved on
25 December 2014
Materials for interconnection structures - Part 7: Sectional specification set for restraining core materials - Section 1: Copper/invar/copper
GSO IEC 61249-7-1:2014 Files
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13 Pages
Current Edition
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GSO IEC 61249-7-1:2014 Scope
This specification gives the requirements for copper-clad Invar material for use in the fabrication of metal-clad laminated sheets, used for printed boards. The use of copper-clad Invar material in printed boards modifies some properties of the boards, for example thermal capacity and coefficient of thermal expansion. This specification covers copper-clad Invar material of nominal thickness from 0,1 mm to 2,4 mm. It applies mainly to copper-clad Invar material supplied in rolls, but by agreement between purchaser and supplier it may be applied to copper-clad Invar material produced in sheets.
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