Electronics Forum | Wed Sep 21 16:23:36 EDT 2005 | 14367
I was going to ask the same question. As was mentioned, it depends on the classification of product. If it's IPC Class 3, with a requirement for high reliability, I'd want the OEM manufacturer to have a defined statement on this issue for more that
Electronics Forum | Tue Sep 20 12:38:05 EDT 2005 | Mark
Hallo, I have a problem with Topaz Xi with FNC nozzles. We have front, back and single camera in Topaz Xi. When i am using front camera and placing SO8, TSSOP14, TSSOP16 etc, using nozzles 73F the accurancy is ok. But when i switch to the back cam
Electronics Forum | Sun Sep 25 11:18:16 EDT 2005 | CS
Hi! I'm facing a strange problem where PCB expanded in X & Y-axis after bottom-side reflow. When the PCB send for Top-side printing process, it is abvious that the printing alignment on the PCB's pads are out. With the problem mentioned above, I am
Electronics Forum | Mon Sep 26 10:06:06 EDT 2005 | stepheniii
Make sure the stencil lined up perfectly in the middle all along the width of the board. Everytime someone has told me that a stencil doesn't match the board, they were not critical enough on alignment. Usually they would say one corner is perfect b
Electronics Forum | Mon Sep 26 15:17:54 EDT 2005 | Amol
Hi, I am spray coating PCB's with the above mentioned coating. The problem is that as soon as the boards are coated, there are pin holes on the surface that subsequently turn into localized areas of dewet on te PCB (its almost as it the coating is fl
Electronics Forum | Tue Sep 27 08:22:27 EDT 2005 | Amol
I am using masking tape, the 3M high temp blue masking tape. the problem though doesnt seem to be related to the masking tap as i am seeing pin holes and eventual dewets over entire ckt board (its almost as if the board has chickenpox under black lig
Electronics Forum | Mon Oct 03 09:24:38 EDT 2005 | John S.
We are implementing a high volume dedicated product line that will be doing lead free selective soldering. There seems to be 3 basic technologies. Wire fed (Panasonic Softbeam or Laser), solder pumps and chimneys (Pillarhouse, SEHO, ERSA, etc) and
Electronics Forum | Fri Oct 07 09:18:39 EDT 2005 | russ
If you're using non-lead free parts then you don't have a pbfree assembly so why worry about marking it anyway? We apply this artwork after the assembly has been completely engineered for lead free. Artwork can be covered up with mask or whatever if
Electronics Forum | Wed Oct 12 04:29:38 EDT 2005 | rlackey
We've seen issues with Elco's for years on boards with a lot of copper (higher than normal temperatures. We found that the 250C caps failed on the "burn in" tests as they has lost a lot of electrolyte in the reflow process. On some brands you could
Electronics Forum | Mon Oct 24 18:48:23 EDT 2005 | GS
Thanks Gents for your replies, first of all I am not involved in production or sale of those tools. It was just a discussion during one of those so many "panic full" work shops / symposiums on WEEE and ROHS matter organized by material or SMT equip
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