The TC0223A from Tai-Saw Technology is a SAW Resonator with Frequency 315.05 to 315.25 MHz, Centre Frequency 315.15 MHz, Insertion Loss 0.8 to 2 dB, Capacitance 4.69 pF, Voltage 12 V. Tags: Drop In, SAW Resonator. More details for TC0223A can be seen below.