The TC315E2 from Tai-Saw Technology is a SAW Resonator with Frequency 314.925 to 315.075 MHz, Centre Frequency 315 MHz, Insertion Loss 1.5 to 2.5 dB, Capacitance 2.1 to 3 pF, Voltage 12 V. Tags: Drop In, SAW Resonator. More details for TC315E2 can be seen below.