Good Morning,

This is my first time having a test house run the IPC T260 test 2.4.24.1.

The Time to delamination test determines how long before the board
starts to delaminate.

The Question:

What "Time to delamination" is good enough for lead free assembly?

The results for the tests we had run on a 14 layer, FR408 samples were 
in 25-27 minutes
range on a number of samples.

It would seem to me, that this test is only a relative comparison 
between different materials.
For example if material  "A" was 12 minutes and material " B" was 20 
minutes, one could
assume that "B" was a better material than "A". But, one could not 
determine the if the material
could survive all the temp cycles required by assembly.

Is this a correct assumption?

I'm willing to share pictures and charts, if anyone is interested.

Thanks.
Dave

-- 
Dave Seymour, CID+
Catapult Communications Inc.
800 Perimeter Park Dr, Suite A
Morrisville, NC 27560

Direct: (919)653-4249
Main: (919)653-4180
Fax: (919)653-4297

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