capacitors

[blue026903111]

I am in the process of replacing some of the capacitors in my Samsung 32" lcd, some on the power board and some on another board but not sure of the name.
i have ordered and received the same value capacitors but some are different sizes to the originals, does this matter as long as the uf, voltage and temp are the same.
also can any one tell me what the various series of capacitors mean.