The TC0194A from Tai-Saw Technology is a SAW Resonator with Frequency 433.345 to 433.495 MHz, Centre Frequency 433.42 MHz, Insertion Loss 1.7 to 2.5 dB, Capacitance 4.76 pF, Voltage 12 V. Tags: Surface Mount, SAW Resonator. More details for TC0194A can be seen below.