The TC0337A from Tai-Saw Technology is a SAW Resonator with Frequency 999.95 to 1000.05 MHz, Centre Frequency 1000 MHz, Insertion Loss 1.75 to 2.3 dB, Capacitance 2.11 pF, Voltage 3 V. Tags: Surface Mount, SAW Resonator. More details for TC0337A can be seen below.