The TC0605A from Tai-Saw Technology is a SAW Resonator with Frequency 249.95 to 250.05 MHz, Centre Frequency 250 MHz, Insertion Loss 1.2 to 2 dB, Capacitance 4.2 pF, Quality Factor Unloaded 14180. Tags: Surface Mount, SAW Resonator. More details for TC0605A can be seen below.