The TC315E1B from Tai-Saw Technology is a SAW Resonator with Frequency 314.9 to 315.1 MHz, Centre Frequency 315 MHz, Insertion Loss 1 to 2 dB, Capacitance 4.8 pF, Voltage 12 V. Tags: Drop In, SAW Resonator. More details for TC315E1B can be seen below.