Electronics Forum | Thu Mar 29 09:51:32 EST 2001 | larryk
Phil, I have got a couple of CR Technology machines also. We have handed off our "learning" to the operators, but you must have confidence in those people! The must be well trained! The AOI machine will flag the things it feels is "bad" and the opera
Electronics Forum | Tue Aug 22 09:30:31 EDT 2000 | Kelvin Chow
Mr. Lee, Although most of the lead free alloy used for solder paste and wave soldering have been identified, a suitable alloy used for leaded Ic packages (like QFP, PLCC..etc) have not been identified yet. Do you have any suggestion on this lead-f
Electronics Forum | Thu Jul 20 16:08:08 EDT 2000 | Bob Willis
Yes if we are going to be lead free than lead will have to go. There are alternative plating finishes, Shipley have been doing a lot of work in this area. Also have a look at the NPL web site. Some people say that new crieria is necessary but I thin
Electronics Forum | Fri Jun 15 09:59:29 EDT 2001 | brownsj
We have recently had an incident where we feel that we have received a batch of cards from our assembly house which have by-passed their ICT operation. This has been determined by the lack of any indentations on the test pads from the sprung probes.
Electronics Forum | Wed Jun 27 15:21:28 EDT 2001 | H.Richter
Hello; Can anyone give me advise on the best way to manually align a 20"x20" stencil on a semi-automatic printer? We have a board with a 16 mil pitch QFP and have difficulty aligning the stencil. We have tried various alignment schemes on the pcb an
Electronics Forum | Wed Jul 04 03:33:47 EDT 2001 | alternativesmt
Dear Sirs, We have purchased a number of Teradyne 5539i machines and are looking for any Users that have this equipment or any experienceed engineers that have used them. We are also interested in peoples comments on this technology. Please reply to
Electronics Forum | Wed Aug 01 21:09:38 EDT 2001 | jbull
Gentleman, I very much appreciate the Multitronks history lesson. But does anyone have any experience with the current day Multitroniks offerings. I understand they may have machines installed in the UK but does anyone in the US have any experiences
Electronics Forum | Tue Jan 18 12:44:24 EST 2000 | Russ
I have found that reducing the amount of metal in the joint makes a difference, we have reduced the aperture sizes to provide a minimal amount of paste. just enough to hold the part during handling. You may also want to try and slow the initial ram
Electronics Forum | Sat Jan 22 14:55:28 EST 2000 | Shravan Jumani
Jim, I am working with O2O1's, and I have found that a combination of No clean flux with Air Reflow, reduces tombstoning, wheras, a combination of No clean flux and Air increases it. Have you or anyone else experienced this? If you have any answers
Electronics Forum | Wed Jan 05 16:21:17 EST 2000 | g cronin
hi glenn i have had nothing but good experiences with Heller. As far as i have seen they have very even heat characteristics, great profiling and overall low maintenance. I am very happy with heller and they are my oven of choice right now.. greg
