Electronics Forum | Wed Nov 16 06:50:59 EST 2005 | milroyperera
Hi, I`m thinking what would be the best way to avoid icicles on lead free solder!
Electronics Forum | Mon Nov 07 06:25:26 EST 2005 | Adnahn
Please advise if Plasma Nitride for Stainless Steel is suitable or a proposed method to coat the wave solder bath for leadfree. Thanking you in advance. Regards, Adnahn
Electronics Forum | Mon Nov 14 10:45:05 EST 2005 | kmeline
We seem to be having a lot of issues with solder not flowing to the end of surface pads especially on fine pitch. These are assemblies we have run in the past with few issues. The bareboard finishes do not look the best. Has anyone been experiencing
Electronics Forum | Mon Nov 21 09:23:06 EST 2005 | Amol
With a BGA, how much solder paste are you putting on the pads? sometimes, bridging occurs when there is more solder paste than needed during reflow.....just a thought
Electronics Forum | Tue Dec 06 06:14:38 EST 2005 | bwet
Try using some of those new polyimide stencils. They are 8mils thick and can prevent shorting if it is due to solder mask problems or too much paste. http://www.solder.net/technical/tips.asp BWET
Electronics Forum | Wed Nov 23 15:02:38 EST 2005 | tglenn
We are using AIM WS300 solder paste and are experiencing excessive voiding on our BGAs. We have exhausted reflow profile alternatives and just can't beat the voids. Has anyone had success with this paste on BGAs? If so how?
Electronics Forum | Mon Nov 28 21:37:37 EST 2005 | milroyperera
Hi, What would be the standard band width for Pb-free soldering? As per my knowledge this should be 3cm to 6cm. What is best?
Electronics Forum | Tue Dec 13 08:08:54 EST 2005 | Amol Kane
Grant, Have you looked at the microstructure of your lead-free BGAs soldered with leaded paste? how do they look?? the reliability of LF BGAs with leaded solder is extremely poor.
Electronics Forum | Thu Dec 01 14:41:06 EST 2005 | Bill C
It looks to me that your reflow profile is not hot enough. Seeing the granular structure of the solder paste still on the board would indicate the paste has not reflowed entirely.
Electronics Forum | Thu Dec 01 14:42:57 EST 2005 | Amol Kane
my first thought was that too, but all the other components on tha board have reflowed properly. I have tow test boards, one with Imm Sn and other with Imm AG. on both these boards only the QFP has this solder phenemenon
