The classic function of a socket is to provide a connection mechanism from the IC (Integrated Circuit) to the circuit board with as little electrical load as possible. This allows the IC to function as it is soldered into the PCB (printed circuit board) but can be replaced by another IC to upgrade or test multiple ICs. With the advent of “lightbulb power”-type ICs getting into the tens of watts — perhaps even 40 to 50 watts — the socket needs to accommodate removal of the heat due to this power or the IC will self-destruct or worse.
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