The HDBF14021A21 from Shoulder Electronics is a Band Pass Filter with Frequency 139.6 to 140.4 MHz, Bandwidth 0.8 to 28 MHz, Center Frequency 140 MHz, Insertion Loss 23 dB, Power 0.01 W. Tags: Surface Mount, IF SAW Filter. More details for HDBF14021A21 can be seen below.