Electronics Forum | Mon Jan 29 10:12:09 EST 2007 | geb
Hi, I am wondering how often people have their GSM (1994 edition) pick and place machines calibrated. We have had ours installed for about 18 months now. It has not been calibrated since its installation. Head 2 has been picking components off centr
Electronics Forum | Tue Feb 20 08:19:54 EST 2007 | Steve
One question about the build to print statement; is there some note saying that the vias are to be plugged with mask? If so, I'm wondering when the circle of mask was done over the vias. If it was done as a secondary operation after flood coating, t
Electronics Forum | Mon Feb 12 09:44:47 EST 2007 | SWAG
Enhanced board set-up, set conveyor width, load board, (your fiducials must be accurate!), use two fiducials to set reference point, click on placement(s), move crosshair to centerpoint, use two point teach to teach one point in the center or use cor
Electronics Forum | Sun Feb 11 23:18:44 EST 2007 | M.Haris
1. If I go to the Pb-free solder paste, is it necessary that I have to change my reflow oven OR just by changing with respect to solder paste specification, I can reach my goal? 2. What is the �Low- Temperature Phase� in any solder paste alloy? 3.W
Electronics Forum | Sun Feb 11 23:32:43 EST 2007 | M.Haris
1. After reflow some boards start producing bumps/bubbles which damage the internal layers causeing PCBs failed in Electrical-testing. How can I eradicate this problem from my assembling process? 2. If SMT components are mounted on non-rigid FLEX PC
Electronics Forum | Thu Mar 01 17:34:03 EST 2007 | darby
Before you go any further - what do you want to do with this machine? Search the archives for Yamaha Philips cross reference and there is a bit of info there on what they are capable of. Forget about 0402 and they will only do 0603 capacitors with an
Electronics Forum | Wed Feb 28 14:48:41 EST 2007 | jax
I doubt it's the board house. Check the Laminate being used. When you find out that the laminate is IS410, search the forum for time and location for the next "RoHs Compliant PCB Delamination Support Group" Some of the locations are hard to find but
Electronics Forum | Thu Mar 01 16:09:33 EST 2007 | Steve
Just learned today that Humiseal will no longer be producing their HT-500 masking tapes or dots. Bummer, because their tape worked very well and left no residues even after baking. They say it was becoming so hard to get the raw material for their
Electronics Forum | Thu Mar 29 12:05:38 EDT 2007 | cecil
OK, just finished our prototype build. PWB 7.5" x 10" 16 layers smallest pitch 17mil smallest BGA pitch 30mil (round apertures) smallest component 0402 total of 1492 placements 5 mil stencil foil (invar) Had numerous PQFN packages that always gave
Electronics Forum | Thu Mar 08 04:39:05 EST 2007 | stimpk
Hello, For the most part the ground side width should be reduced, but more than likly you are well into a run of built pcbs? Profiles may or not help in cases of the dreaded DPACK. No issues on any other areas or components so I'd stay away from t
