The S3910 from Mercury Systems is a Low Pass RF Filter with Frequency 2200 to 2300 MHz, Stopband Frequency 7000 to 8800 MHz, Insertion Loss 0.15 dB, Rejection 50 dB, Upper Rejection 50 dB @7000 to 8800 MHz. Tags: Module with Connector. More details for S3910 can be seen below.