Soldering: Re: TIP120 Darlington
2009-05-07 by Lee Studley
>To properly solder that, though, you'd need to reflow it - it uses the >copper on the PCB as a heatsink so you want a full solder joint >between the pad and the pcb, and most irons can't pump that much heat >in there. I use a cheap hotplate. Another Trick from my Vacuum tube amp repair days: To solder a chassis or plane, use a hot-air gun in addition to the beefy soldering tip. This will greatly increase the heating/soldering capacity. -Lee