The TC0263A from Tai-Saw Technology is a SAW Resonator with Frequency 434.345 to 434.595 MHz, Centre Frequency 434.52 MHz, Insertion Loss 1.3 to 2 dB, Capacitance 3.57 pF, Voltage 12 V. Tags: Surface Mount, SAW Resonator. More details for TC0263A can be seen below.