The NGFL0603BG2R450G200TRF from NIC Components is a Low Pass RF Filter with Frequency 2250 to 2650 MHz, Bandwidth 400 MHz, Stopband Frequency 4600 to 8100 MHz, Insertion Loss 0.4 dB, Rejection 25 to 27 dB. Tags: Surface Mount, Ceramic Filter. More details for NGFL0603BG2R450G200TRF can be seen below.