Pin grid array
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![The pin grid array at the bottom of a XC68020, a prototype of the Motorola 68020 microprocessor](/Images/godic/202502/12/XC68020_bottom_p11600851042.jpg")
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![The topside of a Celeron-400 in a PPGA packing](/Images/godic/202502/12/UpSL3A21042.JPG")
A pin grid array, often abbreviated 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.