The TC0621A from Tai-Saw Technology is a SAW Resonator with Frequency 245.71 to 245.81 MHz, Centre Frequency 245.76 MHz, Insertion Loss 1.2 to 2 dB, Capacitance 3.66 pF, Quality Factor Unloaded 14050. Tags: Surface Mount, SAW Resonator. More details for TC0621A can be seen below.