Electronics Forum | Sat Oct 07 16:31:56 EDT 2000 | Elfego
Tray the electroform stencil.
Electronics Forum | Mon Jun 02 09:38:12 EDT 2003 | pjc
yo Evt, ".., what's the difference?". Answer: Huuuge!! between running 0.4mm pitch QFP and a BGA of same I/O, in terms of handling, storage, feeding (trays), p&p, inspection, test, rework, etc.......
Electronics Forum | Tue Apr 14 18:54:57 EDT 2009 | swag
We have a handful of large, fine pitch QFP's for a HOT build. The leads are damaged due a loose matrix tray. We've fought with this in the past by straightening the leads by hand. We have no time to ship them out for re-bending or anyting like tha
Electronics Forum | Wed Oct 17 13:51:17 EDT 2001 | Hussman
Moisture has done this to me in the past. Try baking a few QFPs first and then place and reflow. I had to remove them from the tape and reel and place them from a tray - but it was moisture related.
Electronics Forum | Fri Apr 09 15:41:11 EDT 1999 | Matt Stackhouse
| DOES ANY ONE KNOW HOW I CAN STRAIGHTEN | BENT PINS ON A FINE PITCH QFP WITH OUT DAMAGING | THE CHIP. AT $300 A CHIP I CAN'T SCRAP THEM. Here is a neat trick if you have the equipment. If your company does any feature measurement of mechanical de
Electronics Forum | Mon Feb 16 15:47:54 EST 2004 | Jim
I have about 200 PCB's from which a 20mil pitch QFP must be removed, cleaned and re-used (will place them back in trays for the P&P machine to place the parts on new boards). My intitial concern is: how can we remove the parts in an efficient manner?
Electronics Forum | Mon Jul 20 12:58:51 EDT 1998 | Dew Lolly
QFP's are best left the professionals. There are MANY subtle issues with fine pitch lead forming such as critical tool design issues ability to check critical dimensions etc. Unless you want to replow this grown in hopes of getting a promotion or c
Electronics Forum | Mon Jul 20 15:11:34 EDT 1998 | Scott McKee
| QFP's are best left the professionals. There are MANY subtle issues with fine pitch lead forming such as critical tool design issues ability to check critical dimensions etc. Unless you want to replow this grown in hopes of getting a promotion or
Electronics Forum | Wed Feb 25 23:19:41 EST 1998 | Steve Gregory
Eric, You've got a Fuji FHP? WOW! It still runs even! That was the first fine pitch machine I ever worked with, along with the FEP's and CP-2's. Unless Fuji has changed the machine software, I don't know what he may be talking about. They
Electronics Forum | Wed Mar 29 03:40:06 EST 2006 | Frank
The Juki 2060 can have both front and rear trolleys and you do not loose any feeder locations. My question was why can't the Assembleon put trolley on the rear? I recently visited a friend at a company that used a lot of Assembleon and compared run
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