solder wicking on components termination

2017/2/28 20:36:58

Hi, Recently we have encountered solder wicking on components termination (total of 13 pcs of components on one pcb)with Ag/Pd finishes during lead-free reflow soldering. The pcb is LF HASL surface finish and LF solder paste composition is SAC305.We tried to increase the solder paste thickness & prolong the soaking time BUT solder wick did happen again. Then we change to Ag/Ni/Sn termination component,we got a good solder fillets. Can anyone tell us what is happening ?

Thks

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Post Comment

bobsled2010

2017/3/2 20:36:58

Please keep us up to date like this.

luizleo2001

2017/3/2 20:36:58

Your post answered my questions. Thanks a lot.

Bartley

2017/3/2 20:36:58

I have truly impressed by your post. Please keep us up to date like this.

effevalerio

2017/3/2 20:36:58

I like checking your post and hope your update comes soon.

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