PLCC-52 (19 x 19 mm body, 50 mils / 1.27 mm pin pitch) to PGA-52 Pin 1 In (0.1" pin pitch) adapter.
PCB dimensions: 900 mils x 900 mils (22.86 x 22.86 mm).
PCB construction: FR-4 UL94V-0. PCB operating temperature range: -40C to +130C. PCB reflow maximum temperature: +260C. PCB Assembly standard: IPC-A-610 Class II.
Compact Adapter Series Continuous Current Rating: 0.6A at 10C Temperature Rise, 1.1A at 40C Temperature Rise.
Bottom side machine pins come pre-installed. They are gold plated (1um gold over 50um nickel) 0.46mm diameter, 3mm long. Pins are installed using surface mount with partial through hole technology for excellent strength and positional accuracy.
Datasheet: PA0219C-P (pdf)