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June 2000

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Subject:
From:
Barbara Burcham <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 9 Jun 2000 16:16:37 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (89 lines)
Check with John Dobrick, Applications Engineer for Rogers Corp - the
manufacturer of a lot of the materials we use. He was here, just this
afternoon and was showing me a material sample that was flexible but was not
actually flex circuit.
[log in to unmask]
Barbara

-----Original Message-----
From: Brooks Bill [mailto:[log in to unmask]]
Sent: Friday, June 09, 2000 3:55 PM
To: [log in to unmask]
Subject: Re: [TN] PWB minimum thickness and bend radius


How many degrees are you thinking of 'bending' the fiberglass epoxy
laminate?
I have seen a 15 deg to 30 deg 'bend' by scoring the board on one side only
and folding the card towards the score line... till the desired degrees of
bend were achieved...
I think it was done on .032 material... with crossover traces on the farside
of the score...

- Bill Brooks


-----Original Message-----
From: Mark Tucker [mailto:[log in to unmask]]
Sent: Friday, June 09, 2000 1:14 PM
To: [log in to unmask]
Subject: [TN] PWB minimum thickness and bend radius


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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