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October 2000

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Subject:
Copper Clad Laminate vs Storage Condition Requirment and Shelf-Life
From:
WanchaiC Charoendee <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Sun, 22 Oct 2000 01:11:20 +0700
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Dear Tech

We just would like to find out whether CCL define limitation of shelf-life of CCL (years) and define storage condition ?  If CCL have been kept for > x ? years, what kind of (IPC) reliability or performance test should be conducted. If no test method defined in IPC, would you please advise the test conditions. 

I have been told by suppliers that CCL shelf-life is unlimited as long as it kept under the roof (25C-40C; 50%-80% rH). 

Some types of laminates have been kept for years and we would like to dispose with good technical justification. 

Looking forward to your advice urgently. 
 
Best regards,

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