Electronics Forum | Fri Sep 16 13:03:11 EDT 2005 | james
We current use glue on our bottom side boards using stencils and screen printers. Our Glue aperatures that we use are very small rectangles and they seem to clog very easily. We currently are using Heraeus PD955PR #8 and see alot of boards that ar
Electronics Forum | Mon Sep 19 06:24:59 EDT 2005 | OEM Manufacturer
Does anybody know of any standards that are available that cover how many times a part or complete unit can be reworked before it is considered to be scrapped? I am currently writing a process to review this with a supplier. For example, a bga devi
Electronics Forum | Mon Sep 19 08:43:30 EDT 2005 | stepheniii
There is not "one size fits all" answer. One criteria I've heard used is scrap it after so many hours of troubleshooting if it's not fixed. End use of the board would be a factor as well. I would want someone giving up salvaging a board for a defibr
Electronics Forum | Wed Sep 21 10:11:12 EDT 2005 | gregp
Hi Rob, I'm not sure I know what you mean. Are you referring to adding leaders to cut tapes in order to minimize component loss? Also, I've never heard of tapes snapping. Is this something you see regularly on a particular piece of equipment? Th
Electronics Forum | Fri Sep 23 09:14:47 EDT 2005 | Base
Hey Rob, I've seen operators splicing large tapes not just by sticking them together with a piece of splicing-tape, but additionally they overlap the tapes and (forcefully) insert the last pocket of the leaving reel into the first (empty) pocket of
Electronics Forum | Tue Sep 20 17:15:29 EDT 2005 | valuems
Hello I'll be the one to ask a dumb question--Why not fix the screen printer? If it is a MPM you can call me and I'll help if I can. And no I'm not trying to sell any thing. Better yet --why is the printer down? Wasn't thinking that you may be ou
Electronics Forum | Wed Sep 21 08:43:46 EDT 2005 | kmeline
We are having problems with a 1210 cap moving as far as a 1/4 inch from its pads during reflow. We have verified the placement before reflow. They will tombstone some of the time. There are smaller and larger parts around this location and none of th
Electronics Forum | Wed Sep 21 12:14:47 EDT 2005 | Rob
It's quite a big cap so try taping over about 25% of both apertures to restrict the volume of paste printed then see what happens. Also, is anything interfering with the part during placement? or are you 100% sure it's going into the oven ok? if no
Electronics Forum | Wed Sep 21 12:12:24 EDT 2005 | vikkaraja
HI there, I have a problem with my TP11 HYDRA HEAD. It is not picking up parts from the magazine. I have been working with Mydata on this issue, but I have not had much success so far. So far I done the followings:ran vaccum test, tube height, and H
Electronics Forum | Thu Sep 22 06:12:05 EDT 2005 | gavinscott
Hi All, I have been tasked with a project on the control of moisture sensitive devices and I was hoping to get some input from the experts out there... How do you monitor total exposure time for a MSD? If the packaging has been opened and re-sealed a
