Electronics Forum | Fri Feb 16 08:58:53 EST 2007 | SRM
DEKs are the best. They blow all others away. Sure the Pro-Flow does tend to waste paste, and you do get some blow by, but once you realize you have the best screen printer available, you can live with trivial things like this. Squeegees are for i
Electronics Forum | Fri Feb 16 05:16:42 EST 2007 | Rob
Hi Vshan, Have more pallets made, and don't stack them - lay them flat on a trolley and move them back to the start of the line.
Electronics Forum | Thu Feb 15 14:10:59 EST 2007 | Cmiller
Russ is correct. We have been using SAC 305 for SMT and SN100C for wave and selective and repair for about a year. May switch to SN100C in SMT at some point if we can get some paste that wets better.
Electronics Forum | Tue Feb 20 16:42:31 EST 2007 | ratsalad
We have been using SAC 305 for reflow and Cobalt 995 (very similar to SN100C, only cheaper) for wave and rework for quite a while now with no issues that I'm aware of.
Electronics Forum | Thu Feb 15 12:45:44 EST 2007 | chrisgriffin
If you think you are having lighting issues, you should do a histogram test. It's under the test user. There is a pot on a power supply that will adjust the brightness. The power supply is right next to the Y axis motor. There should be a brown p
Electronics Forum | Thu Feb 15 13:13:51 EST 2007 | SRM
Your DEK could read non-blackened fids? Wow, you must have bought them from Superman. Or did you just teach baord pads and stencil openings?
Electronics Forum | Thu Feb 15 13:18:16 EST 2007 | slthomas
The E5s I had just needed the fids to be burned black. Never needed epoxy, although we did have one stencil that we had to touch up with a sharpie now and then because they didn't burn it dark enough (too hot...?).
Electronics Forum | Fri Feb 16 12:38:10 EST 2007 | nitro
Probably because you are using baords, as you quoted above. "Your DEK could read non-blackened fids? Wow, you must have bought them from Superman. Or did you just teach baord pads and stencil openings?" In my DEKs, we use the new fangled "Boards"
Electronics Forum | Fri Feb 16 09:40:19 EST 2007 | kmeline
I am looking for recommendations for working with this package. We have ran some QFN20's but this one is a little smaller and lead-free. If anyone has experience with this, I welcome your comments. Thanks
Electronics Forum | Mon Feb 19 08:38:05 EST 2007 | realchunks
Are your pads on the board aligned correctly? I've seen this a lot lately. Pads on opposite sides are not aligned correctly. This causes the part to twist. If you have the Gerber and a way to check it, it's worth the 3 minutes to check.
