The MA05545 from Golledge is a SAW Resonator with Frequency 868.150 to 868.550 MHz, Centre Frequency 868.35 MHz, Insertion Loss 1.3 to 2.5 dB, Voltage 12 V, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, SAW Resonator. More details for MA05545 can be seen below.