The ACTR868.3/868.3/TO39 from Advanced Crystal Technology is a SAW Resonator with Frequency 868.15 to 868.45 MHz, Centre Frequency 868.3 MHz, Insertion Loss 1.2 to 1.8 dB, Capacitance 2.2 to 2.7 pF, Quality Factor Loaded 1600. Tags: Drop In, SAW Resonator. More details for ACTR868.3/868.3/TO39 can be seen below.