The TC433E2B from Tai-Saw Technology is a SAW Resonator with Frequency 433.82 to 434.02 MHz, Centre Frequency 433.92 MHz, Insertion Loss 1 to 2 dB, Capacitance 4.1 pF, Voltage 12 V. Tags: Drop In, SAW Resonator. More details for TC433E2B can be seen below.