Electronics Forum | Wed Mar 28 11:53:50 EST 2001 | Steve
Take the leap of faith my friend!! Buy the AOI and watch all of your problems disappear. Okay, so I exaggerated a bit. Let me tell you the real story. We purchased a CR Technology RTI6500 almost two years ago. We chose the CR Tech unit because it wa
Electronics Forum | Thu Mar 29 10:51:47 EST 2001 | Deon Nungaray
Hello Phil, AOI equipment has been around for a number of years. I remember evaluating a machine around 5 years ago. At this time the system was not able to learn right side up or upside down characters. Well, the newer systems have come a long way.
Electronics Forum | Thu Mar 29 15:29:11 EST 2001 | johnw
measuring Paste volume or at least paste height is an essencial part of any SMT process. You've got to control those input's.... Paste volume determines how much solder is available for your joint so theres a direct to joint reliability / PCB reliabi
Electronics Forum | Tue Apr 10 17:44:13 EDT 2001 | davef
Listen, there is a $20 to 30k laseriffic paste measuring system that is not only very expensive and a major bottle neck, but its limited accuracy is the kicker that makes this little item a really special!!! [What a combination, eh???] And that doe
Electronics Forum | Tue Apr 03 22:03:18 EDT 2001 | davef
With friends like you, who needs enemies? I�d guess that the perceived benefits of flat pads for your 20 mil pitch and below components counter-balance the higher cost, gold being a solder pot contaminant, limited solder mask compatibility, potentia
Electronics Forum | Thu Apr 05 12:25:17 EDT 2001 | Adam
The Solderballs are on the botton side of the board.The solderballs are concentrated around through hole edge connectors, which have a Tin/lead finish and have lead pitch of 2.5mm, on top of this, random solderballs are occuring around test points. T
Electronics Forum | Thu Apr 05 12:25:01 EDT 2001 | davef
Talk about bucking the trend!!! OK, OK, I know some US military work still requires RMA. You�re both correct. Cleaning decisions for RMA fluxed boards are based on customers requirements. [Some do (clean) and some don�t.] Older US military speci
Electronics Forum | Wed Apr 11 00:17:03 EDT 2001 | Dreamsniper
Hi, We got a 0.5mm pitch QFP144 from Altera with the below lead width specs. min. lead width = 0.17mm nominal = 0.22mm maximum = 0.27 What's the best pad or land width for the above? This is what our designer used. Land Width = Component Lead Wi
Electronics Forum | Wed Apr 11 22:05:58 EDT 2001 | davef
OA pastes are more hydroscopic than NC pastes. Hydroscopic. The capacity of a material to absorb and retain moisture from the ambient air. Sometimes this is compounded if you remove paste from the frig and let it warm to room temperature, because
Electronics Forum | Fri Apr 13 22:56:02 EDT 2001 | gdstanton
I've been chipping away on a solder bridging and poor fillet wetting problem for a few weeks now (new to the company) and I found two issues. First, after a review of stencil inventory, I found apertures to be oversized when compared to suggested di
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