The 8SFB-2G4G-250M-CD-SFF from Quantic PMI (Planar Monolithics) is a Switched Filter Bank with Frequency 2 to 4 GHz, Band 1 2000 to 2250 MHz, Band 2 2250 to 2500 MHz, Band 3 2500 to 2750 MHz, Insertion Loss 6 dB. Tags: Module. More details for 8SFB-2G4G-250M-CD-SFF can be seen below.