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Sockets for ICs, Transistors

Sockets for ICs, transistors, and other electronic components offer major advantages over soldering and other wiring techniques. They provide a secure connection and can spread high-frequency signals. Sockets are available in a variety of configurations with the most common types being PGA, PLCC, and DIP and each type has a unique application field and working principle.

PGA Sockets

PGA stands for Pin Grid Array sockets, and is designed to provide a low impedance connection for high frequency signals and reduce cross talk between pins. They consist of a slot or socket with a metal contact grid which is dimpled or scalloped to securely hold the pins of an integrated circuit. PGA sockets use orbital rivets for connections and have wide application field on digital devices. The socket is designed to allow easy insertion and removal from the circuit, making it ideal for portable devices, prototyping, and servicing device for repairs and upgrades.

PLCC Sockets

PLCC stands for Plastic Leaded Chip Carrier sockets and is a surface mount socket for packaging and connecting of integrated circuit packages. It is designed to provide secure connections with low insertion force and pull-out force helping to prevent package damage. PLCC sockets are most commonly used for high power applications, such as microprocessors, where heat must be dissipated through the package mounted to the socket.

DIP Sockets

DIP stands for Dual In-line Package and is one of the most common socket types. It is widely used on development boards, and embedded systems for simple prototyping solutions. DIP sockets use foot-hinge card which is inserted and removed from the card and held securely in place by two small posts. The connection is made with a metal “spring” contact between the socket and the component, allowing easy removal without damage. DIPs are versatile and provide a reliable connection due to the spring connections.

Conclusion

Sockets have a major advantage over soldering and other wiring techniques. They provide a secure, versatile means of connecting ICs, transistors, and other electronic components. Sockets come in many forms including PGA\'s, PLCC\'s and DIP\'s each of which has its own unique application field and working principle. As electronic devices become increasingly complex and as circuit sizes become ever smaller, the need for reliable sockets will only become more apparent.

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