Electronics Forum | Thu Nov 30 10:38:39 EST 2006 | billwestiet
You are cooling too fast, and some flux and paste is worse than others... Can you control your cooling zones? Water Temp (higher)? Or Water Flow (less, effectively less cooling)? Changing water temp is prefferable over flow if you can do it. I h
Electronics Forum | Thu Nov 30 08:15:16 EST 2006 | jdengler
If you define cycle time as the time it takes to complete one board it is a useless number. What you need to know is the time it takes to complete one board and start the next board. This means first fiducial on first board to first fiducial on th
Electronics Forum | Fri Dec 01 08:09:08 EST 2006 | CK the Flip
Square-leaded pin headers will typically bridge at the trailing edge (last couple of leads), since during peel-back, the solder at the trailing edge has "nowhere to go". If you have control over designs, ask your designers if they can put solder thi
Electronics Forum | Mon Dec 04 11:28:44 EST 2006 | samir
Patrick, Have you seen Al Gore's documentary on Global Warming, "The Inconvenient Truth?" It was okay, but I didn't like how Gore got political in a few scenes by slamming the current administration's environmental policies (or lack thereof...c'mo
Electronics Forum | Wed Dec 06 08:29:50 EST 2006 | David
Hi Pavel, We regularly use over printing on a multitude of problem parts including fine pitch QFP's. In an Automotive Environment the only thing you can change without a mountain of paperwork is the stencil. best way to work out how much you can get
Electronics Forum | Wed Jan 03 09:59:52 EST 2007 | Jim
Hi, I was looking for information on failure rates for BGA components. I am analyzing our BGA rework rates and find it difficult to define a root cause when a remove and replace of the BGA component corrects the test errors. Inspection prior to re
Electronics Forum | Thu Jan 11 14:27:30 EST 2007 | gregcr
I worked for a similar company. They had 4 GSM's. Most all of the GSM's software have a fairly straight forward way of importing data, it is just a matter of formating it correctly. I can't imaging using calipers to make a GSM placement program if
Electronics Forum | Fri Jan 12 11:04:09 EST 2007 | mika
zero > in manual Control > bring the head close to the end of the machine so that you can reach the head => Diagnostic meny > engage the clutches and THIS IS VERY IMPORTANT: use Extreme Caution (you can flip off the X-Y circuit braker on the lower ba
Electronics Forum | Mon Jan 15 13:12:18 EST 2007 | realchunks
So others can solder the same board and part but you can't. Dipping the legs in flux doesn't help. Then it's either your pre-heat or wave. Measure your pre-heat and compare to others or flux mfger. Do you have chip wave or something like an Omega
Electronics Forum | Thu Feb 01 02:36:40 EST 2007 | bvdb
Hi pr, The problem was happening on all three of the nozzles that we were using, about half the time the Z axis would rise up and go for the next nozzle and the other half it would stop almost as soon as it released the nozzle. When I inch the Z ax
