Electronics Forum | Fri Jun 09 11:52:59 EDT 2006 | Rob
Yes you can solder on to it - just tried it with some 0603's across some gold fingers with tin lead paste & a heat gun. Don't know how many times you could rework it though. Any chance you could get hold of an aold populated board from your custome
Electronics Forum | Wed Mar 21 01:19:29 EST 2001 | PeteC
We're watching more carefully at post-print and pre-reflow inspections for products with the gold finger contacts. Not 100% sure the cause. SMT line people suspect primary cause is improperly wiped stencil. Do you know any other possible causes? We g
Electronics Forum | Fri Jun 09 11:18:25 EDT 2006 | kehoem@bellsouth.net
Question; Do you think it's possible that your customer has got his units mixed up & actually means 0.3 micro inches of gold over 0.5 micro inches of Nickel? That is what I said but their vendor says they are building to print which says 80 uM and i
Electronics Forum | Wed Mar 21 16:32:03 EST 2001 | mparker
The root cause is dependant on the type of solder "splash", ball, whatever, that you are seeing post reflow. If it is smears, then cleaning the stencil underside is probably the answer. Are you using automatic wipers? How many print cycles between w
Electronics Forum | Sun Dec 31 07:31:40 EST 2006 | davef
Thoughts are: * Eliminate solder spotting on gold fingers through process improvement in broard handling, printing paste control, and reflow recipe development. Search the fine SMTnet Archives for previous discussions. * Dispense or print a reflow te
Electronics Forum | Tue May 19 08:48:05 EDT 1998 | Aric Parr
| | I am running boards with gold fingers on a pallet for | | masking purposes. The pallets worked fine for a while | | but know the gold fingers are getting solder on them. We | | have tried everythin: new pallets, cleaning the pallet | | and boa
Electronics Forum | Wed Aug 23 08:50:04 EDT 2000 | Dave F
Dr. Lee: We had a discussion on the forum recently and I wanted to get your input. What is the best method(s) for elimating (reducing) no-clean solder paste flux from splattering on gold interconnect fingers on a PCA?
Electronics Forum | Fri May 08 16:30:59 EDT 1998 | Chrys
| I am running boards with gold fingers on a pallet for | masking purposes. The pallets worked fine for a while | but know the gold fingers are getting solder on them. We | have tried everythin: new pallets, cleaning the pallet | and board to be s
Electronics Forum | Wed Jan 14 08:28:46 EST 2004 | davef
Search the fine SMTnet Archives for background on solder on gold fingers. As we recall: * Paste selection * Proper reflow recipe tuning ... are important.
Electronics Forum | Thu Aug 19 09:05:32 EDT 2004 | davef
We understand that you are getting solder on your gold fingers. If this is correct, search the SMTnet Archives, while you're waiting for others to respond. For instance: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=5127
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