The MN-200-400-4-T01 from Pole/Zero is a Tunable Filter with Frequency 200 to 400 MHz, Bandwidth 8 MHz, Insertion Loss 4 dB, Supply Voltage 4.5 to 5.5 V, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, Digitally Controlled. More details for MN-200-400-4-T01 can be seen below.