Electronics Forum | Wed Apr 28 22:16:51 EDT 1999 | Steve Gregory
| Hi everyone, | We started our first machine placed shield test today.We will be machine placing shields with in the next two months. I used a Fuji Qp242 today. There were no problems with pickup etc,. just vision errors. I'm sure we will work the
Electronics Forum | Thu Apr 29 00:00:50 EDT 1999 | FAC
| | Hi everyone, | | We started our first machine placed shield test today.We will be machine placing shields with in the next two months. I used a Fuji Qp242 today. There were no problems with pickup etc,. just vision errors. I'm sure we will work
Electronics Forum | Thu Apr 29 13:33:13 EDT 1999 | KEVIN SIMPSON
| | | Hi everyone, | | | We started our first machine placed shield test today.We will be machine placing shields with in the next two months. I used a Fuji Qp242 today. There were no problems with pickup etc,. just vision errors. I'm sure we will
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 May 01 08:35:11 EDT 2008 | cyber_wolf
We are having issues with these parts tilting to one side during reflow. Of course when they are tilted, they have to be reworked because the shield won't fit on. Changing board design and part design is not an option.... I think there are 2 reasons
Electronics Forum | Fri Jun 03 07:28:14 EDT 2011 | denz34
Hi there, I have questions regarding on SMT RF Shield dewetting & misalignment issue.. Q1) How to identify on good or bad RF shield that could contribute to dewetting? Q2) What counter measure that must be taken when facing dewetting issue? Q3) W
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 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 | 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
Electronics Forum | Fri Jul 13 12:21:41 EDT 2018 | emeto
The right way in your case is to use shield with cover. Place, reflow, remove shield pick up rails/tabs, AOI, close cover.
