The TD1090EE-B from Tai-Saw Technology is a SAW Resonator with Frequency 1089.8 to 1090.2 MHz, Centre Frequency 1090 MHz, Insertion Loss 10 to 12.5 dB, Capacitance 1.2 pF, Quality Factor Unloaded 6000. Tags: Surface Mount, SAW Resonator. More details for TD1090EE-B can be seen below.