The RCF-2590.000-200000-2012-W-001 from Raltron is a Band Pass Filter with Frequency 2.49 to 2.69 GHz, Insertion Loss 2.1 dB, Rejection 30 to 34 dB /, Upper Rejection 30 dB, Lower Rejection 34 dB. Tags: Surface Mount, Ceramic Filter. More details for RCF-2590.000-200000-2012-W-001 can be seen below.