The TC0264A from Tai-Saw Technology is a SAW Resonator with Frequency 644.57859 to 644.63859 MHz, Centre Frequency 644.60859 MHz, Insertion Loss 1.1 to 2.5 dB, Capacitance 2.89 pF, Voltage 12 V. Tags: Surface Mount, SAW Resonator. More details for TC0264A can be seen below.