The TC0553A from Tai-Saw Technology is a SAW Resonator with Frequency 423.145 to 423.295 MHz, Centre Frequency 423.22 MHz, Insertion Loss 1.2 to 1.7 dB, Capacitance 3.6 pF, Voltage 12 V. Tags: Surface Mount, SAW Resonator. More details for TC0553A can be seen below.