Although we often have seen the phenomenon known as the talk-through on the Lötkehle connections by the wave soldering called, revealed a testing of printed circuit boards, where the Lötkehle as in the example above aloof had no errors after 2200 cycles from -55 / +125 º C.

Until now, this is a problem that is in production yet to be fully resolved.

This information was provided by Bob Willis - www.leadfreesoldering.com