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Ball Grid Array (BGA)

ballgridarrayBall Grid Array (BGA) refers to a particular type of surface mount assembly which is used to permanently mount devices, such as microprocessors, to printed circuit boards. A BGA has a number of advantages over other methods and as such, it has become a popular technique used in the manufacturing of integrated circuits and electronic devices.

A common form of electronic manufacturing, ball grid arrays derived from pre-existing pin grid array (PGA) technologies. Instead of utilising pins to conduct electrical signals from the circuit board, a ball grid array makes use of tiny drops of solder.

These balls of solder are placed evenly apart on the board in an array, or symmetrical grid and gently heated in a specialist oven. Surface tension ensures that the components are kept in position.

Our assembly capabilities and machinery allows us to work on a diverse range of BGA assemblies and is capable of working with a pitch down to 0.3mm on your printed circuit board.

The efficiencies of BGA

When discussing a ball grid array, many people point towards the improved efficiency that a BGA offers.

By making use of the underside of the chip to connect it to the surface of the board, a BGA is capable of having a higher density of connections than other surface mount processes. This means that a more efficient design can be implemented.

Also, due to the uniform nature of a BGA, it is possible to have wide spaces between the solder balls. This can not only improve the manufacturing yield and reduce production time, but it also is more reliable as the chance of a bridged joint can be minimised.

Ball grid arrays are also more thermally stable, thanks to the reduced resistance between the package or component and PCB. This helps heat flow easily and guards against chips overheating.

Away from benefits associated with an increase in efficiency, BGAs are generally much thinner than standard assemblies, allowing final products to be much smaller. This is obviously advantageous in today’s world where there is a drive to create smaller, more efficient products.