The ECS-160-12-30Q-VS-TR from ECS Inc. International is a RF Quartz Crystal with Frequency 16 MHz, Frequency Stability ±150 ppm, Frequency Tolerance ±30 ppm, Load Capacitance 12 pF, Equivalent Series Resistance 50. Tags: Surface Mount. More details for ECS-160-12-30Q-VS-TR can be seen below.