Electronics Forum | Thu Feb 12 16:59:11 EST 2015 | emjasaph
We have a board that has an RF shield on one side and ceramic capacitors on the other side. The side with the capacitors is reflowed first, then the other side is reflowed. We have been experiencing cracked capacitors in these boards. My guess is tha
Electronics Forum | Mon Mar 12 15:07:23 EDT 2007 | dave
I suggested that tothe customer but they require an hermetic seal?
Electronics Forum | Mon Mar 12 13:13:11 EDT 2007 | jseagle
We are going to try clips from Autosplice, the small clips come on tape and reel which are placed by the machine and then reflowed. After reflow we install the shield.
Electronics Forum | Wed Nov 24 17:09:41 EST 2010 | bandjwet
We are working on placing an RF shield. Sometimes we have been dispensing paste (if the board is already populated), othertimes we have been printing the paste pattern (unpopulated board). Now we have a case where the customer is insisting on a pre
Electronics Forum | Sun Mar 11 08:42:25 EDT 2007 | davef
Search the fine SMTnet Archives, while you're waiting for others to respond. For instance: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=46565
Electronics Forum | Thu May 01 11:56:04 EDT 2008 | realchunks
It sounds like this part is floating on your solder joint during reflow. You may need to redesign your pad geometry. In general with this type of clip - smaller pads are better. If you cannotcahnge pad size, try changing the openings on your stenc
Electronics Forum | Thu Apr 30 14:45:28 EDT 2009 | bandjwet
Does anyone have any experience in using solder scavenging systems? We have very tight land areas for RF shields (nearest component can be 2mm away in some cases). We are aware that both SRT and AIRVAC have such systems. Thanks! BWET
Electronics Forum | Mon Jun 06 02:21:42 EDT 2011 | denz34
Hi Davef, Thanks for your advice. I will recommend & try your advice in our production. Thanks & regards.
Electronics Forum | Thu Jul 20 12:38:55 EDT 2000 | Bob Willis
The first time I was faced with this it was on a night shift training M ?????????? and we used a standard hot air rework system with no under board heating. The trick is to keep the air flow low and you can remove the parts. Most people use too highe
Electronics Forum | Sat Jun 04 12:11:49 EDT 2011 | davef
Q1) How to identify on good or bad RF shield that could contribute to dewetting? A1) We use Alloy 770 and 752 [German silver] for our RF shields. We have never seen a solderability issue, even aged stock solders well. * Nickel Alloy 752, Nickel Silv
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