Electronics Forum | Wed Oct 17 10:37:13 EDT 2001 | davef
Help us understand your situation better: ARE THE QFP BOWED? If so, * Where are the QFP bowed? * Is the QFP body bowed or is it just the leads? * How much are the QFP bowed? * Are all QFP the same part number, from the same supplier, date code
Electronics Forum | Mon Apr 23 07:56:20 EDT 2001 | dougie
Hi Kris, DISCO!!!! Cheers, Dougie.
Electronics Forum | Mon Apr 23 14:36:16 EDT 2001 | CAL
Ah Yes.............My 600 A version has it in the back as well Cal
Electronics Forum | Thu Sep 26 11:06:45 EDT 2002 | slthomas
Maybe you're well ahead of me, but make sure you search the archives for "bow" and "twist" as well as warp.....
Electronics Forum | Fri Aug 22 14:38:21 EDT 2003 | russ
Please search the archives, there is a ton of stuff on this. Russ
Electronics Forum | Mon Oct 03 22:07:33 EDT 2005 | davef
If the PTH plating thickness is proper, your customer probably won't see the effects of moisture during soldering processes.
Electronics Forum | Fri Apr 20 13:12:26 EDT 2007 | Brett
Dollar stores? really? Maybe we should bow down to the Chineese and give up.
Electronics Forum | Thu Jun 24 15:33:56 EDT 2010 | davef
Our best suggestion - get the copper balanced and if possible go to higher Tg materials.
Electronics Forum | Fri Jul 09 06:51:46 EDT 2010 | cobar
Try titanium edge stiffners on the PCB before making solder pallets.
Electronics Forum | Tue Aug 28 09:11:26 EDT 2012 | rway
Thank you for your reply. We will try your suggestions and keep you posted.
