I have designed a circuit board and will shortly send it off for fab.
Some of the components e.g. AT90SCAN128 are surface mount.
I know that solder paste is used in soldering surface mount components, I have however never seen it, what is like? does it solidify as it dries? i have no idea!
My question is: should I include a solder paste mask in the PCB CAD design. Will it be OK in the post? Will it make it easier for me to solder the surface mount components?