Solder points on PCB not taking solder

Thread Starter

john2k

Joined Nov 14, 2019
207
I'm trying to add some solder to solder points of SMS legs on a PCB but it just isn't taking the solder. The solder seems to keep bubbling up. Any advice?
 

crutschow

Joined Mar 14, 2008
30,075
Lead free doesn't solder as readily as leaded so get some containing lead if you can.
There is absolutely no health hazard from using leaded solder.
 

MrChips

Joined Oct 2, 2009
26,461
Try increasing the temperature of your soldering iron to 800°F or 425°C and use tin-lead solder to get it flowing.
 

bassbindevil

Joined Jan 23, 2014
454
Try scrubbing the pad with a "rust eraser" pen (has a bundle of stiff fiberglass bristles, got mine from the auto parts store in the autobody section). Maybe there's some oxide layer that prevents solder sticking.
 
Top