The TC0399B from Tai-Saw Technology is a SAW Resonator with Frequency 737.595 to 737.745 MHz, Centre Frequency 737.67 MHz, Insertion Loss 1.26 to 2 dB, Capacitance 2.75 pF, Voltage 3 V. Tags: Surface Mount, SAW Resonator. More details for TC0399B can be seen below.