Electronics Forum | Fri Dec 17 14:13:18 EST 2004 | Claude_Couture
I have done this several times in order to save my butt: adding liquid flux in a jar of not so fresh paste, stirring it slow for 2-3 minutes, to make it usable. Of course, use no-clean flux for no clean paste, etc. During one production slow-down,
Electronics Forum | Fri Jan 21 13:39:15 EST 2005 | Chunks
Directors and company owners care since they're buying it. It's like an odometer on a car - just an indicator. But like your chipshooter example, moving parts on an oven wear out too. They just don't stop working. Plus they're subjected to higher
Electronics Forum | Thu Jan 27 11:23:45 EST 2005 | russ
Well first off I wouldn't evaluate paste for a wave process. I would use solder bar instead. Flux - top side fillets and no shorting on the solder side, does it clean well after processing if using water soluble flux. How wide is the process win
Electronics Forum | Thu Mar 31 23:14:18 EST 2005 | Steve
Russ if your asking me if covering the surface of the granite defeats the purpose then I'm lost. An ionizer is a very good suggestion but they are not inexpensive. If the table is grounded and the metal bars are on a grounded mat, laminate etc. then
Electronics Forum | Wed May 04 12:36:06 EDT 2005 | bschreiber
Hello Frank, Just a quick note regarding the use of your Smart Sonic Stencil Cleaning process for cleaning PCBs; if the boards are populated, some components my require an ultrasonic rinse with DI water as ultrasonics will deliver the wash solution
Electronics Forum | Fri May 27 12:09:59 EDT 2005 | saragorcos
You do want to be very careful with potentially entrapped organic materials as they are prone to causing electrical leakage failures particularly around sensitive devices. There is a new clenliness testing tool available that tests a localized area
Electronics Forum | Mon May 30 11:37:01 EDT 2005 | stepheniii
I don't know this machine but I have seen a similar problem on other machines. Have you cleaned and lubed the guide rods for the x-axis? It's easy to forget that AOI machines do need some maintenance. Is it possible that it hangs, while waiting for t
Electronics Forum | Thu Jun 16 09:13:46 EDT 2005 | russ
We use a 5 mil for 16mil pitch QFPs, Make sure that the stencil has been polished. Type 3 paste. We have used lead free no-clean, lead no-clean, and water soluble lead pastes for these packages. We set the printer for a slow stroke .7 in/min. wi
Electronics Forum | Wed Jul 13 15:26:32 EDT 2005 | russ
The problems we saw had to due with the Flux I believe. We saw what I would call poor coelescence and the residues were very hard for us to clean with our Water only cleaner. I will not lie and say I worked on the process very much. Since we alrea
Electronics Forum | Thu Aug 25 13:06:45 EDT 2005 | carln
I evaluated a couple of the Vigon products by Zestron last year and I think the SC200 was one of them. They seemed to clean OK, and Zestron said they were biodegradable, but they conveniently failed to disclose that they contained VOCs. If you are
