Electronics Forum | Sun Jul 26 20:56:43 EDT 1998 | Masdi Muhammad
We are trying to reduce the number of units fail at system test due to flux on gold finger. We know so far that the flux is deposited onto the goldfinger during touch-up or rework and to reduce the contamination we are planning to implement 'tapin
Electronics Forum | Fri Jan 22 09:20:29 EST 2010 | jrr3434
Is there anyway to get solder off gold fingers besides replating them?
Electronics Forum | Tue Apr 17 21:30:27 EDT 2001 | davef
The issue is on the table. Which is it? Are you ... * Loosing your gold plate when you remove the tape? [A tape test is a standard test for evaluating gold fingers. Check IPC-TM-650, test number wachacallit. Checkitaut.] OR * Putting tape o
Electronics Forum | Fri Apr 13 13:45:25 EDT 2001 | gsmguru
Just a guess-- Could you be seeing the nickel under the gold plating because you are removing some of the Gold with the Kapton Tape ? This should be easy to verify. Otherwise it sounds like things are pretty much covered.
Electronics Forum | Fri Apr 13 22:38:19 EDT 2001 | edylc
Hi , Could you be seeing the nickel under the gold plating because you are removing some of the Gold with the Kapton Tape....?? You mean , the adhesive properties of the kapton tape will cause the gold plating on the gold finger to be somehow peel of
Electronics Forum | Fri Jan 22 16:16:17 EST 2010 | stepheniii
My old boss bought some stuff to clean the lead off of gold fingers. At least that is what he thought it did. What it really did was remove the gold fingers. And quite well I might add. The short answer to your question is no. And if you replate mak
Electronics Forum | Fri Apr 13 12:37:35 EDT 2001 | edylc
>>> gold finger was covered by a Kapton tape and it was done offline away from the Screen printer or rather from the SMT lines itself, we are using an ENIG Pcb's , the process doesnt need a wave soldering ....however at the final end of the line ,
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 | 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
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