The Advantage of PCB Socket
The PCB socket is mounted directly to the printed circuit board by putting each of the socket legs into a hole on the PCB. These holes are connected to other components on the board by means of the printed circuits. Once the socket is mounted on the board, it is soldered in place, either by hand or by machine.
After the PCB socket is soldered to the printed circuit board, it is ready to receive the integrated circuit. Each pin of the IC is carefully aligned with the holes on the socket, then the chip is pushed into place. Once the chip is in the socket, it works the same as if it was attached directly to the circuit board.
In the manufacturing stage of the printed circuit board, using a PCB socket adds an extra step to the process, but it serves an important purpose. If the integrated circuit needs to be replaced for any reason, whether due to failure or upgrade, it can simply be popped out of the socket and a new chip put in its place. If the PCB socket is not used, replacing a chip requires that the old chip be de-soldered, which can cause damage to the circuit board, and the new chip must be soldered in. The PCB socket is much easier to use and carries almost no risk of damaging the printed circuit board, since no soldering is required.