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Subject:	Re: Brittle FPC Tracks
From:	"[log in to unmask]" <[log in to unmask]>
Reply To:	[log in to unmask]
Date:	Thu, 1 May 2008 15:05:47 +0000
Content-Type:	text/plain
Parts/Attachments:	text/plain (56 lines)

Flexible Printed Circuit used to connect to an LCD

Photo attached.

> ----Original Message----
> From: [log in to unmask]
> Date: May 1, 2008 1:45:13 PM
> To: [log in to unmask]
> Subj: RE: [TN] Brittle FPC Tracks
> 
> What do you mean by FPC? Can you email me a picture of the components so
> I can get a better understanding of what you are dealing with? 
> 
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of [log in to unmask]
> Sent: Thursday, May 01, 2008 3:15 AM
> To: [log in to unmask]
> Subject: [TN] Brittle FPC Tracks
> 
> I have an FPC which plugs into a surface mount connector.  A very small
> bend on the terminal end - i.e. &lt;30 degrees (which is plated with
> NiAu and has a stiffener on the back) results in the tracks cracking.  
I
> have other FPCs on the same part which I can bend through 180 degrees
> with no sign of cracking...
> My questions are:
> 1. Does anyone have any similar experiences and if so what could be the
> causes?
> 2. Is there any way of making the Cu Ni Au more ductile so it doesn't
> crack (on parts already manufactured) Many thanks, Neil
> 
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