The SR434E from SAW Components is a SAW Resonator with Frequency 433.845 to 433.995 MHz, Centre Frequency 433.92 MHz, Insertion Loss 0.7 to 1.1 dB, Capacitance 3.56 pF, Voltage 10 V. Tags: Surface Mount, SAW Resonator. More details for SR434E can be seen below.