[Latest] How old is Pin_grid_array now?

A pin grid array (PGA) is a type of integrated circuit packaging. In a PGA, the package is square or rectangular, and the pins are arranged in a regular array on the underside of the package. The pins are commonly spaced 2.54 mm (0.1") apart, and may or may not cover the entire underside of the package. 1.27 mm (0.05") is commonly used with higher pin count PGAs. PGAs are often mounted on printed