BGA is also known as Ball grid Array. The way in which a chip is attached to a socket or circuit board gives air to this name of Ball grid Array. A chip package having solder balls on the underside for mounting is a ball Grid Array. It allows for a reduction in die package size. Further, it allows better heat dissipation, and greater module densities, Chip-Scale Package (CSP) – thin chip packaging where electrical connections are typically through a ball grid array. A SMD package in which solder ball interconnects cover the bottom surface of the package is also known as Ball Grid Array.
It is a type of memory chip (package type) that is directly mounted to the module by solder balls which are found on the underside of the chip. It is an IC package with solder balls that are arranged in a grid pattern and act as the input/output points. Further, it is an integrated circuit surface mount package with an area array of solder balls that are attached to the bottom side of a substrate with routing layers. The die is joined to the substrate by making use of die and wire bonding or flip-chip interconnection. It is given the name of Ball Grid Array because it is basically an array of metal alloy balls arranged in a grid. A BGA package simply looks like a thin wafer of semi-conducting material that has circuit components on only one face.
What is the matrix of a BGA??