Electronics Forum | Mon Apr 16 09:29:23 EDT 2001 | thrasher7
How do you handle wipe-downs at screen print? This is often a culprit. Just a thought..
Electronics Forum | Thu Jul 15 18:58:48 EDT 1999 | Earl Moon
| We are currently assemblying several different board type with gold plated lands with varying results. Can any of you that has successful experience in this area give me some pointers. What paste do you use? Do you use the recommended reflow pro
Electronics Forum | Fri Jul 16 22:44:27 EDT 1999 | Vic Lau
| We are currently assemblying several different board type with gold plated lands with varying results. Can any of you that has successful experience in this area give me some pointers. What paste do you use? Do you use the recommended reflow pro
Electronics Forum | Thu Jul 20 05:04:30 EDT 2006 | bing007
We had a similar problem with gold contact pads. Cleanliness is paramount. If you are using foil tensioning system, wash the foil in a stencil wash before use as the cardboard cassettes may be contaminated. Be very careful when loading into a frame f
Electronics Forum | Tue Jul 18 10:16:49 EDT 2006 | russ
Clean up!, check all conveyors for paste, the printer, oven. If you are splattering in the oven than you need a better profile or better paste, one of the two, maybe both. Hope was helpful Russ
Electronics Forum | Tue Jul 18 11:49:24 EDT 2006 | slthomas
How does your profile fit the paste manufacturer's specs? It sounds like you could be ramping up a little fast and boiling your non-metal constituents.
Electronics Forum | Tue Jul 18 19:20:25 EDT 2006 | sharifudin
Actually we run lead free solder paste and the profile spec very tigh.I can't use capton tape due my product in panel form and save cost.I already verify conveyor,machine and tool free from dust and solder paste but the problem still remain.
Electronics Forum | Fri Jan 22 14:18:21 EST 2010 | davef
Search the fine SMTnet Archives to find threads like: * http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=5127 * http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=9250
Electronics Forum | Tue Apr 17 09:53:57 EDT 2001 | edylc
Hi Thrasher7, We called it wash boards, any misprint from screen printer was at tight control ..and those wash boards when being flow down to the line have an identifier /marker , is a matter on isolation of the problem..... But I still can't think
Electronics Forum | Sun Jul 26 20:54:40 EDT 1998 | Masdi Muhammad
Hi, Need some advice on how to eliminate or reduce the solder on finger that we are having right now. So far what we understand is that 90% of the problem is due to the reflow process where solder traps in vias causing explosion when subjecte
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