The TC0635A from Tai-Saw Technology is a SAW Resonator with Frequency 310.95 to 311.15 MHz, Centre Frequency 311.05 MHz, Insertion Loss 1.35 to 2.5 dB, Capacitance 4.98 pF, Voltage 12 V. Tags: Surface Mount, SAW Resonator. More details for TC0635A can be seen below.