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Date: | Wed, 26 May 1999 19:38:58 +0900 |
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Tom
CEM-1 is composed of paper, glass and epoxy resin.
The raw materials for CEM-3 and FR-4 are fiberglass and epoxy resin.
The main difference between them is the form of reinforcement.
The reinforcement for CEM-3 is a combination of woven glass and non-woven glass web.
On the other hand, FR-4 use all woven glass.
The overall performance of FR-4 is better than that of CEM-3, which is better than that of CEM-1. The cost is, you may guess, the complete reverse.
In terms of processibility, CEM-1 and CEM-3 are punchable.
One has to use a drill to process FR-4.
Of course, it is a general view so there may be exceptions for special grades.
We, Doosan Electro-materials, offer a variety of quality base materials including CEM-1, CEM-3, and FR-4 at competitive price.
If you are interested, please call Mr. Kim who is our US office manager at 408-733-3553.
Minsu Lee
Associate Manager
R&D Dept.
Doosan Electro-materials.
----- Original Message -----
From: Tom Burek <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, May 26, 1999 7:25 AM
Subject: [TN] Compare CEM-1, CEM-3 and FR4
> Can anyone tell me what CEM-3 is? How does this differ from CEM-1 and FR4? Is there a WEB site that list this information in one site?
> Thank You,
>
> Tom Burek
> [log in to unmask]
>
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