> >So my question is this: What to you folks think - is surface mount >cheaper than through hole? Does surface mount require a two sided >board in order to route? > > There are some other things to consider as well as the points you have mentioned. 1. SMT assembly costs are usually less than through hole. 2. SMT with smaller PCB size, packaging can be much less. Whether or not you can route a single layer SMT board is the same as for through hole. Only difference is your components are now on the bottom of the board not the top :-) Ray Gardiner Technical Director DSP systems Pty. Ltd. ray@dsp-systems.com private email to:- ray@netspace.net.au http://www.dsp-systems.com