Electronics Forum | Thu May 31 21:45:48 EDT 2012 | davef
rsthompson ... if you're talking about bare boards IPC-5701, Users Guide for Cleanliness of Unpopulated PBC, Table 8 ||Bare board final surface finish Ions||Hot air solder level||OSP over copper||Gold over nickel Chloride||0.75 ug/cm^2||0.75 ug/cm^2
Electronics Forum | Wed Jun 27 11:58:42 EDT 2012 | cyber_wolf
Your tool tips are being damaged because the small x-motor is not engaging when the head is picking parts. When this happens the head overshoots and you bang the tips on the mag springs. Directly after a tip gets damaged go into the service program a
Electronics Forum | Thu Jun 14 00:10:18 EDT 2012 | tech1
Most of it depends upon the type of Y wagon you have. if they are internal conveyors you need to remove the covers from the operator side. There are 3 screws holding the Y wagon down, 2 of them are hex screws and the one in front is an allen head. W
Electronics Forum | Wed Jun 13 06:10:08 EDT 2012 | bobpan
When fiducials on pcba's have poor plating and the vision cant find them repeatably there are a couple of things you can try. 1. Use the WAVI light and turn off (setting of 1) the main bright LED ring on the downward camera. After doing this in teach
Electronics Forum | Thu Jun 14 15:29:29 EDT 2012 | davef
That you can get good solder flow when hand soldering seems to indicate that the temperature of your solder pot is too low. Still, I'm uneasy that you see gold on the pads after passing the board across the solder pot. Gold is so thin with ENIG. So
Electronics Forum | Fri Jul 06 04:55:59 EDT 2012 | ccgooi
I have fabricated a artwork of stencil on a mylar and make comparison on PCB and Stencil in order to confirm if there is any PCB stretching at both end. The results are comparable for both stencil and PCB without any stretching . So,I assumed that th
Electronics Forum | Tue Jul 03 16:15:08 EDT 2012 | kq702
Hi, when they did the reflow with the south bridge chipset they took a heat gun and went arround the chip in circles. This is what I did with the broken apple motherboard. I covered the board in tinfoil and cut out the squares arround the gpu, cpu an
Electronics Forum | Wed Aug 08 12:20:51 EDT 2012 | swag
We have a Kaeser AS-25 screw compressor with Kaiser air dryer + cylinders. The system has a water catch prior to delivering air to the dryer that automatically "spits" to a drain. It's not fool proof - if the water collector gets overfull, it will
Electronics Forum | Thu Aug 16 07:40:27 EDT 2012 | bobpan
Here are a couple of things to look at. 1. Watch the machine run....and if it misses a part....make sure it doesnt blow out the next part being presented. Sometimes the air pressure is too high and the vacuum verify will blow the part out of the poc
Electronics Forum | Thu Aug 30 22:44:05 EDT 2012 | rway
I'm not saying that any unexplained failure is caused by ESD and I certainly am not promoting fear. I sleep very well at night (except after eating Mexican food, which can cause discharges as well). What I am saying is that ESD is a real threat and
winsouce.jpg)