The Silicon PIN FPA is based on a Radiation Hard Readout Integrated Circuit and a High efficiency Silicon Detector which are separately optimized for the intended application and hybridized.
The detector is P-cap, Intrinsic Bulk, and N-Base (PIN) and can vary in thickness from <10µm to >300µm. Thickness is “tuned” depending on the required NIR response and MTF needs of the application.
These arrays have been Supplied by Raytheon for more than 20 years. They are space qualified and several are currently on-orbit.