Electronics Forum | Tue Mar 16 09:31:21 EST 1999 | Dave Manero
I am looking for the dimensions of the qfp trays. I need to no the center to center as well as the edge to center. I will use this information to program the fuji QP machine for placing 44pin QFP from the tray, or other devices. I can measure this by
Electronics Forum | Tue Mar 16 09:53:27 EST 1999 | Ben Kirk
| I am looking for the dimensions of the qfp trays. I need to no the center to center as well as the edge to center. I will use this information to program the fuji QP machine for placing 44pin QFP from the tray, or other devices. I can measure this
Electronics Forum | Wed Mar 10 08:19:01 EST 2010 | aajmera
We have these standard pitch QFPs, for which we found some coplanarity error issues. The issues surfaced during BLT. We do not have any instrument to measure the coplanarity error before the component is loaded on the placement machines. Is there any
Electronics Forum | Fri Oct 24 13:41:39 EDT 2003 | albertoh
I need some information about coplanarity specs for QFP's. I try to setup coplanarity inspection on my QP242 but i'm not sure about what value i need on each parameter in order to setup my diferents parts data for this option. Thanks in advance.
Electronics Forum | Tue Sep 30 20:05:34 EDT 2003 | afm
Does alloy 42 lead frame on a QFP100 make lack of coplanarity (let's say 2 mils), a critical factor to have non-wetted leads? Lead coating is tin lead 90/10. afm
Electronics Forum | Mon Feb 25 17:07:15 EST 2002 | peterson
We are using a Panasonic MPAV2 to place some QFP's. Can someone please help me with a problem we are having with coplanarity! The machine is "dropping" parts due to coplanarity issues. What settings should we be looking at in order to eliminate the
Electronics Forum | Mon Sep 25 16:14:16 EDT 2000 | LarryK
What do you all do to fix coplanarity on fine pitch QFPs? I know that the best thing would be to send them back to the vender, but what about the when you gotta use them? Straightening by hand seems to be so time comsuming. Any better ways? Larry
Electronics Forum | Wed Feb 27 16:48:12 EST 2002 | retronix
We can fully inspect your parts and give you the actual measurements of coplanarity, this will let you know if they are within spec. Regards Matt
Electronics Forum | Wed Apr 21 02:53:33 EDT 1999 | Raul N.
25 PPM)! | | | | 1. Is there a better process to solder the leads of QFP's with lifted "minute" lifted leads still having a realiable solder joints? | | | | 2. Or has anybody tried modifying solder pads and use thicker solder paste deposit to compe
Electronics Forum | Wed Mar 10 08:20:00 EST 2010 | aajmera
I am sorry, they are fine-pitch QFPs (20 mils)
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