The TC0648A from Tai-Saw Technology is a SAW Resonator with Frequency 749.925 to 750.075 MHz, Centre Frequency 750 MHz, Insertion Loss 1.3 to 2.3 dB, Capacitance 1.91 pF, Voltage 12 V. Tags: Surface Mount, SAW Resonator. More details for TC0648A can be seen below.