The TC0355A from Tai-Saw Technology is a SAW Resonator with Frequency 644.813 to 644.933 MHz, Centre Frequency 644.873 MHz, Insertion Loss 1.5 to 2 dB, Capacitance 2.62 pF, Voltage 3 V. Tags: Surface Mount, SAW Resonator. More details for TC0355A can be seen below.