FR4/FR5 ?

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What are the differences with FR-4 and FR-5 epoxy sheets?

I can't seem to find a comparison on the spec's.

I am talking about the sheets only, no clad on them.

It's not much, but...

http://www.ami.ac.uk/courses/topics/0233_abm/index.html

FR-5 seems to be a higher temperature version of FR-4.

 

[Jamie]

What are the differences with FR-4 and FR-5 epoxy sheets?

I can't seem to find a comparison on the spec's.

I am talking about the sheets only, no clad on them.

Jamie.

 

[Martin Riddle]

What are the differences with FR-4 and FR-5 epoxy sheets?

I can't seem to find a comparison on the spec's.

I am talking about the sheets only, no clad on them.

Jamie.

Bond strength and Operating temp.
<http://k-mac-plastics.net/data sheets/phenolics-technical-data.htm>

Cheers