Electronics Forum | Tue Mar 02 22:40:52 EST 2004 | pdeuel
To clean up other replys I will add that some most all machines have global correction. Most placements are an off sets from pcb 0,0 usually the lower left corner of the board. When the machine locates the fiduitals and these fids are not exactly whe
Electronics Forum | Wed May 19 07:38:42 EDT 2004 | Bob L.
I'm trying to help one of our remote sites solve a problem with a warped PBGA. The corners are lifted, creating columnar joints and the central balls are sometimes shorting. I've verified that it's not popcorning and I've got samples going to the l
Electronics Forum | Wed Mar 30 17:35:18 EST 2005 | Grant
Hi, Yes, it was fun reading this thread again. We initially upgraded our MY9 to a MY12 with line scan camera, but it was still too slow. We considered getting a second MYDATA, but decided to go with some FuJi XP 142, and 242 machines, with a second
Electronics Forum | Thu Jun 10 10:48:49 EDT 2004 | Jon W.
Dr. Lou, Your first question is influenced by many variables. New equipment will have the first year free parts, labor and service. You may discuss a long term at time of purchase. Older equipment may (depending on maintenance) have a higher chance
Electronics Forum | Tue Jul 20 12:49:38 EDT 2004 | mmjm_1099
We are having a problem with our Heller 1800W oven with certian parts skewing. It seems that some inductors and taller Can caps are shifting around in the oven. It seems it will solder fine and than all of a sudden just be off to one side or the othe
Electronics Forum | Fri Sep 10 00:02:14 EDT 2004 | Darren
Dror, If I understand your question correctly, you would like to know what the operators should be doing in what priority during setup or changeover? Simply stated if you are doing on line setup due to limitations in feeder quantity or manpower avail
Electronics Forum | Mon Dec 27 18:44:14 EST 2004 | Mark
I am testing some BGA's (PBGA 30mm x 30mm) to evaluate the maximum ramp rate we can achieve in our reflow oven. Temperature is being measured at the body(top) of the component / not leads. After several trials (with various oven settings), the high
Electronics Forum | Tue Mar 22 17:08:01 EST 2005 | finepitch
We might need to open up the term "mass production" here, but I will give it a try anyway. I've seen semiconductor packaging companies in the far east where they pick up balls with a vacuum head, consisting of holes matching the pattern of the BGA p
Electronics Forum | Thu May 05 03:22:38 EDT 2005 | Hannu
I do not mean big, heavy transformers but rather small ferrite core transformers, with ferrites in the range of EF16 .. EF40. The weight of the lead and its percentage of the total weight is not the issue here. We simply do not want lead-containing t
Electronics Forum | Fri Jun 10 13:36:10 EDT 2005 | ratsalad
James, It's good that you have internal part numbers. Some CMs use customer part numbers which makes dedicated setups much more difficult. Your materials group can tell you the quantities of part numbers they buy, and that can tell you which parts
