The TC433E1-A from Tai-Saw Technology is a SAW Resonator with Frequency 433.845 to 433.995 MHz, Centre Frequency 433.92 MHz, Insertion Loss 1.3 to 2 dB, Capacitance 3.9 pF, Voltage 12 V. Tags: Drop In, SAW Resonator. More details for TC433E1-A can be seen below.