> > andrewm worte: > > However the QFNs that you can hardly > > see the pads on the side of there is > > not much choice but to reflow them. > > Also anything with an exposed pad > > you must reflow. > Leon wrote: > I do thermal pads by putting a hole in > the centre of the pad hole and feeding > solder in whilst melting it with the > iron tip. The RF heating used by > Metcal helps a lot with this sort of > thing. Good idea feeding the solder through a large hole. Does the hole have to be plated through or will it work on home made boards ? Would not have worked for that last board I posted though :(. This is the back side of it http://www.thehacktory.com/Simple-IR-RX-Prototype-V1p4-Bottom.jpg Yes - the little surface mount IR receiver module is directly behind the QFN28-4.
Message
Re: Drag soldering.
2007-08-18 by Andrew