Yes..of course...
Franklin
----- Original Message -----
From: "James TerVeen" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, October 28, 2002 10:39 AM
Subject: Re: [TN] WARPAGE
> After assembly may be more critical. Many assembled boards have to
mate
> into a connector and if the board is warped then you may have a more
> critical problem......
>
>
>
> Franklin D Asbell
> <fasbell@NETWORKCI To: [log in to unmask]
> RCUITS.COM> cc:
> Sent by: TechNet Subject: Re: [TN] WARPAGE
> <[log in to unmask]>
>
>
> 10/28/02 11:30 AM
> Please respond to
> "TechNet E-Mail
> Forum."; Please
> respond to
> Franklin D Asbell
>
>
>
>
>
>
> Would that criteria also apply to "populated" boards? I believe he was
> seeking data for populated boards...curious...would it matter after
> assembly if they were warped or not???
>
> Franklin
>
>
> ----- Original Message -----
> From: Eric Castonguay
> To: [log in to unmask]
> Sent: Monday, October 28, 2002 10:14 AM
> Subject: Re: [TN] WARPAGE
>
>
>
> Pankaj,
> check in IPC-6012 par. 3.4.4 Bow & Twist. The printed board shall have a
> maximum bow & twist of 0.75% for boards that use SM components and 1.5%
> for all other boards. Also, see test method 2.4.22 described in the
> "IPC-TM-650 test methods manual" on how to measure it.
>
>
> Eric Castonguay, Eng.
> Manufacturing Engineering
> www.Hyperchip.com
> Montreal, Canada
> T. 514 906 2409
> F. 514 906 2501
>
>
>
>
>
>
> -----Original Message-----
> From: Karnwal, Pankaj [mailto:[log in to unmask]]
> Sent: Monday, October 28, 2002 02:02
> To: [log in to unmask]
> Subject: [TN] WARPAGE
>
>
>
>
>
> > Hi TechNet
> >
> > Can any body give me the acceptable range of PCB {Populated } For
> > Warpage, { Both Throughole And SMD And MIX components} .And how we can
> > measure it. Also tell that what IPC states about this.
> >
> >
> > With regards
> > Pankaj Karnwal
> > Quality Assurance Ext. 211
> > BESL A-4,Sec-5 NOIDA , 201301, INDIA
> > e mail : <mailto:[log in to unmask]>
> > Barco, innovators in image processing
> >
> >
> >
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