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Hardware => Lynx Express => Topic started by: fertsy on August 07, 2011,

Title: Middle leg on Triacs
Post by: fertsy on August 07, 2011,

What makes the middle leg on the Triacs harder to solder? I read in the wiki,

"NOTE #1: Do not be afraid to turn your irons up really high to solder the triacs middle leg. I do it last and crank my iron from the normal 330 - 340 C to 390 C to do these. Put the iron on the side of the power trace to isolate the lead and solder it."

I crank up my iron but still cant easily get it to flow around the base very well like every other solder point I have done.

Thanks,

Joe

Title: Re: Middle leg on Triacs
Post by: rrowan on August 07, 2011,

I think it has to do with the heat sink plate on the back of the triac that draws the heat away from the center leg making soldering slightly more difficult

Rick R.

Title: Re: Middle leg on Triacs
Post by: fertsy on August 07, 2011,

That seemed to be my only guess as well. I hope all works well. heading to Wally World soon to get some power cords for it.

Title: Re: Middle leg on Triacs
Post by: abrianbaker on August 07, 2011,

I would also add that the middle leg is connected to the large copper strip on the board.  It just sucks the heat away!  <md..