Electronics Forum | Thu May 05 08:14:45 EDT 2011 | kahrpr
Where black pad exists, it is not a common problem. When I read it is totally random I doubt that. You have defiantly something going on that is unique with the process. It is either your board manufacturer or your solder paste or your profile. It c
Electronics Forum | Tue May 17 16:10:35 EDT 2011 | bandjwet
Our shop builds lowere qty (2-40 pcs) high complexity electronics. When we get in to bd counts greater than 10 pcs with a high number of placements (3-4K) missings and polarity are issues that bite us. We have looked at different simpler scanner type
Electronics Forum | Fri May 27 05:16:28 EDT 2011 | aj
Hi, There are quite a few suppliers so you could have a lot of work on your hands trying them all. Do a bit of research finding out what paste all the big guns use? they spend a fortune doing evaluations etc But you should get at least 3 different
Electronics Forum | Wed Sep 21 14:43:50 EDT 2011 | russw
The confusing thing is we are doing the same thing we've been doing for years, same flux levels, same procedures, etc. so you would expect the same results. The only difference is the new bottle of 951, but Kester insists there isn't a problem with
Electronics Forum | Mon Oct 10 15:07:18 EDT 2011 | kahrpr
An extraction system is not a good comparison. The extractor itself is not where they make their money. It’s off of the consumables filters etc. Aois and other larger capital equipment there is no other income stream after the sale other than a few p
Electronics Forum | Wed Sep 19 12:27:56 EDT 2012 | proceng1
Are you sure that you are getting adequate nitrogen flow up through the cap? If your pump isn't seated properly, you may have nitrogen escaping. Also, I have two different height nitrogen bases. The shorter one does not allow as much gas to escape
Electronics Forum | Tue Nov 15 22:32:07 EST 2011 | doncattoni
Hello Austin, Have you tried to preheat the board or the contact area? Many times with the heat cured materials it will start the cure process and slow the flow of the material. Our Protect-R-Shield silicone product was formulated to be a much thi
Electronics Forum | Tue Jan 10 22:10:29 EST 2012 | doncattoni
Hello Austin, Sorry for the delayed response. There are different types of cures for conformal coating such as RTV which stands for Room Temperature Vulcanising which means they are cured by the humidity in the air. This type of cure does not need
Electronics Forum | Tue Dec 13 18:30:46 EST 2011 | IT23
Currently, we are using fixed barcode scanners that connect to Cogiscan PFC box. The scanners are mounted using a flexible arm. The flexible arm is hard to adjust so that the scanner will be on top of the label every time it hits the sensor. I'm look
Electronics Forum | Sat Dec 24 19:39:43 EST 2011 | dontfeedphils
I've reflowed many different size BGA's in an effort to better the connection and to help the board pass functional test. Using a middle of the road liquid flux and a convection spot rework machine and almost every time I would reflow a failed board
