Electronics Forum | Tue Feb 02 16:57:33 EST 2010 | flipit
Like Dave said, you need to use an acid solution. This is what is used prior to HASL. You will think I am crazy but you can use vinegar or even catsup/ketchup. The acetic acid will clean the oxidation. Just rinse the board off before using.
Electronics Forum | Wed Mar 24 01:22:38 EDT 2010 | itzikbs
These boards had solder mask issues, where manufecter took the boards and said he will rework them. All boards has the same problems as in the picture attached. We rejected the boards, but still I appriciate an explanation what can go wrong if I us
Electronics Forum | Mon Jul 12 13:24:38 EDT 2010 | tate350
Like robdg3 said, just check your paste spec and define your reflow profile accordingly. There should not be any major difference in reflow profile due to PCB finish.
Electronics Forum | Tue Nov 02 03:24:33 EDT 2010 | Jacki
Yes, we use solder paste,solder bar and solder wire from different manufactureres for 1PCB assembly. And, what JAX said, we never mixed solder paste from different manufactures and used.
Electronics Forum | Thu Aug 04 12:12:27 EDT 2011 | rway
I don't believe it is the RAM. As I said, both are doing it and we are using the recommended amount of RAM for these systems. The video card is an interesting suggestion however. I will look into it.
Electronics Forum | Wed Aug 10 16:42:10 EDT 2011 | kahrpr
Not an easy question to answer with out seeing the board. There is selective soldering, gluing, maybe a wave soldering pallet. As DaveF said since your asking the question I would assume your shops expertise is limited.
Electronics Forum | Wed May 02 11:22:19 EDT 2012 | aj
waste of time - get your materials manager to work on the smt floor for a week and see how ridiculous this approach is! saving pennies while adding time between setups, looking for parts and as you said issues with pickup etc....
Electronics Forum | Fri Jun 22 08:44:50 EDT 2012 | grauen06
We are using Nitrogen from Dewer tanks. We have purchased a generator from On-Site gas that we will be installing in 2 weeks. I guess Nitrogen purity could be an issue, but the company that sells us Nitrogen said it is five 9s (99.999%)
Electronics Forum | Wed Oct 17 14:26:30 EDT 2012 | dman97
With that said, do you happen to have the calibration procedure for the MTU? I already have the X0 Y0 jig. Just need to know where exactly I am supposed to calibrate with regards to the actual trays.
Electronics Forum | Thu Nov 29 11:58:53 EST 2012 | rgduval
Thanks, Dave. As a start-up, we're trying to make it as cost effective as possible. That said, we also want to do it right. We don't want the possibility of the City/State/EPA coming down on us anytime in the future for contaminants being discharg
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