The TC0172B from Tai-Saw Technology is a SAW Resonator with Frequency 622.27 to 622.34 MHz, Centre Frequency 622.31 MHz, Insertion Loss 1 to 2 dB, Capacitance 2.92 pF, Voltage 12 V. Tags: Surface Mount, SAW Resonator. More details for TC0172B can be seen below.