The MN-30-90-4-T01 from Pole/Zero is a Tunable Filter with Frequency 30 to 90 MHz, Bandwidth 2.4 MHz, Insertion Loss 5 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-30-90-4-T01 can be seen below.