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
Electronics Forum | Tue Oct 11 15:21:12 EDT 2005 | Hoss
Sean, If the machines use more than the spec'd 8CFM, are not leaking and work fine otherwise, I wouldn't disqualify them on that basis alone. You may be exceeding the duty cycle rating of your compressor and not necessarily the volume. If Samsung
Electronics Forum | Wed Oct 12 07:47:42 EDT 2005 | Comp tech.
Sean, I just installed a whole new comp room in our facility. 1, By kick off do you mean the comp goes into an idle mode,or shut down completely? If it just goes into an idle mode, this may be caused by your supply manifold being to small in diameter
Electronics Forum | Fri Oct 21 08:03:40 EDT 2005 | Mike
Hello Darby, because of the machine configuration it depents very strong on the feeder configuration and on the board if the 3 heads more give you so much more CPH. Realistic it will only be 1-2000 CPH more in realistic operation. On the other hand
Electronics Forum | Mon Oct 24 17:56:57 EDT 2005 | Ali
Hello all: A couple of queries on matte Sn plating: My Application: 2 Reflows in subassembly reflow+ 8 Hr Steam age+ Solderability (Dip and look) for sub assembly to mother board soldering. Queries on Matte Sn: 1- Different plating vendor
