The TC0273A from Tai-Saw Technology is a SAW Resonator with Frequency 500.25 to 500.35 MHz, Centre Frequency 500.3 MHz, Insertion Loss 1 to 2 dB, Capacitance 3.29 pF, Quality Factor Unloaded 12000. Tags: Surface Mount, SAW Resonator. More details for TC0273A can be seen below.