At 05:31 AM 3/12/2007, Marsico, James wrote:
>Hello Technet:
>
>
>
>Can anyone provide the pros and cons with using Nelco N4000-13EP vs.
>Isola FR408 with regard to PWB processing, reliability and performance
>for a high reliability application?


We have used a lot of both these materials extensively. Mostly in 
sequential lam, build up layer type products.

We don't use -13 anymore in stackups that have single ply uVia dielectrics 
and that require more than 2 laminations cycles. Too many delam problems in 
the past with -13.  -13 only has about 1/2 the innerlaminar bond strength 
of 408 and it requires extensive baking to protect that innerlaminar bond 
strength. I understand -13 is related to CE so do the math yourself.

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