The TC0143A from Tai-Saw Technology is a SAW Resonator with Frequency 303.75 to 303.9 MHz, Centre Frequency 303.825 MHz, Insertion Loss 1.5 to 2.5 dB, Capacitance 4.85 pF, Voltage 12 V. Tags: Drop In, SAW Resonator. More details for TC0143A can be seen below.