The TC0177A from Tai-Saw Technology is a SAW Resonator with Frequency 804.556 to 804.806 MHz, Centre Frequency 804.681 MHz, Insertion Loss 1.5 to 2.5 dB, Capacitance 2.85 pF, Voltage 12 V. Tags: Surface Mount, SAW Resonator. More details for TC0177A can be seen below.