Mark:

You should check-out the web-site - www.krempel.com. This is a German
company and has FR-4 material that can be used for bend application.
Typically, you can get FR-4 as thin as 0.0016", but you need to use
traditional coverlay as a coating for it to be able to bend without
cracking. I am not sure of the bend radius, but folks at Krempel may be able
to help.

Chetan


>From: Mark Tucker <[log in to unmask]>
>Reply-To: "TechNet E-Mail Forum." <[log in to unmask]>, [log in to unmask]
>To: [log in to unmask]
>Subject: [TN] PWB  minimum thickness and bend radius
>Date: Fri, 9 Jun 2000 13:14:04 -0700
>
>I have a design situation where I would like to do a one time "bend for
>assembly" to a small PWB.  The board would be two sided, but would not have
>any
>components in the bend zone.  The space I have for the bend is small.  This
>leads me to four questions:
>What is the thinnest commonly used FR4?  What is that materials minimum
>bend
>radius?
>What is the thinnest commonly used FR1?  What is that materials minimum
>bend
>radius?
>
>Thanks for your help
>Mark Tucker
>
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