The TC0219E from Tai-Saw Technology is a SAW Resonator with Frequency 433.770 to 434.070 MHz, Centre Frequency 433.92 MHz, Insertion Loss 1.58 to 2.2 dB, Capacitance 2.95 pF, Voltage 12 V. Tags: Surface Mount, SAW Resonator. More details for TC0219E can be seen below.