What’s PPGA?
Plastic Pin Grid Array (PPGA) is a square-shaped plastic package whose pins or leads are arranged in a square array at the bottom of the package body. The PPGA is just one of several types of the PGA package. Because of the array arrangement of the leads in a PGA package, it can provide much higher lead counts than other packages. This is the reason why the PGA is a popular choice for devices with high I/O counts such as microprocessors.
Plastic PGA packaging was used by Intel for late-model Mendocino core Celeron processors based on Socket 370. Some pre-Socket 8 processors also used a similar form factor, although they were not officially referred to as PPGA.
Typical plastic PGAs have pin counts that range from 68 to 503, although with more pins do exist. The pins are usually spaced 100 mils (approx. 2.5 mm) or 50 mils (1.25 mm) apart.
Properties of Some Examples | |||
No. of Pins | Body Size | Body Thickness | Pad Pitch |
68 | 28.2 x 28.2mm | 3mm | 2.5mm |
120 | 35.1 x 35.1mm | 3mm | 2.5mm |
156 | 42.7 x 42.7mm | 3mm | 2.5mm |
296 | 49.5 x 49.5mm | 3mm | 2.5mm |
411 | 52.8 x 52.8mm | 3mm | 2.5mm |
503 | 57.9 x 57.9mm | 3mm | 2.5mm |