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Reply To: | TechNet E-Mail Forum. |
Date: | Fri, 29 May 1998 09:20:08 +0800 |
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At 14:26 28.05.98 -0500, you wrote:
>What is FR1 and how does it differ from FR4?
Just my topic!
FR1 is very similar to FR2, both are UL94-V0, both use a phenolic resin as
binder. The only difference to FR2 is the phenolic resin, which is a
different type. FR1 is mainly cold punchable and has a slightly better
operation temperatur. Therefore, many laminate maker which produce FR1 do
not produce FR2. Also, FR1 prices are the same as FR2.
I consider myself as having some knowledge about laminates - still, I can't
tell the difference between FR1 + FR2.
FR4 is a glass epoxy material and is completly different.
Jens Behrens
Want to know more about laminate? http://www.felsweb.com/lam_faq.htm
Laminate FAQ
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