The TC0306A from Tai-Saw Technology is a SAW Resonator with Frequency 999.875 to 1000.125 MHz, Centre Frequency 1000 MHz, Insertion Loss 1.5 to 2 dB, Capacitance 2.06 pF, Voltage 12 V. Tags: Surface Mount, SAW Resonator. More details for TC0306A can be seen below.