Estimated colleagues, In some cases componentĀ“s thermal planes Au finished which will be solded on ENEPIG TMM10 pcb where coplanarity is very critical then pretining modify undesirably coplanarity. Taking into account this fact, we have reflowed the component (solder the earth plane to pcb) without pretining and compare soldering under RX to another done with pretining. Have found out no difference between both cases (with and without pretining). Furthermore will run some tracking tests to verify joint. My question: Do you know or have any background experience on soldering Au finished thermal planes without pretining? In all other cases of Au components terminals finished, we always remove Au. brgds,Ricardo ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________