I do SMT only and I always prototype with the parts I will be using.  Not
often, but at times, I have found that the die in the IC is different
between PDIP through hole parts and SMT parts.

To allow me to prototype and use perfboard and home made PCB's, I keep a
complete assortment of IC sockets around and I solder my SMT parts to the
IC sockets.  This allows me the greatest flexibility in my design and
testing phases of any project.

And a nice side affect . . . my final product performance always exceeds my
prototypes.

Just a thought.

Karl

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