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Flexible Metal-Clad Dielectrics for Use in Fabrication of Flexible Printed Boards
1 SCOPE
This standard establishes the classification system, the qualification and quality conformance requirements for flexible metal-clad dielectric materials to be used for the fabrication of flexible printed boards.
1.1 Classification System
The system described in 1.1.1 through 1.1.2.7 identifies flexible metal-clad dielectrics.
1.1.1 Nonspecific Designation
A nonspecific designation is intended for use by designers on master drawings to designate their material choice. At the end of this standard is a series of material specification sheets identified by specification sheet numbers. Each sheet outlines engineering and performance data for a flexible metal-clad dielectrics, indicating base material type, adhesive type and method of reinforcement.
Example of nonspecific designation:
IPC-4204/1, where ‘‘1’’ refers to the specification sheet detailing copper-clad polyimide dielectric with acrylic adhesive. If further material specification details (such as dielectric, adhesive or copper thicknesses) are required, they should be highlighted in cross sectional views or notes on the master drawing.
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