The TC0449A from Tai-Saw Technology is a SAW Resonator with Frequency 434.075 to 434.225 MHz, Centre Frequency 434.15 MHz, Insertion Loss 0.93 to 2 dB, Capacitance 5.09 pF, Voltage 5 V. Tags: Surface Mount, SAW Resonator. More details for TC0449A can be seen below.
