What are the electrical contacts or small the electrical part on the top of Lepton modules? Do they need to be connected to something?

Small pads located at the top of Lepton modules are for a part which is need only on some configurations and modes. The pads, or any installed part, should not be connected to external grounds, power, or other circuitry. FLIR has not evaluated the effect of connecting the unused pads together, but this is not expected to cause any problems on modules with no part at that location.