The ECS-160-12-37B-CTN-TR from ECS Inc. International is a RF Quartz Crystal with Frequency 16 MHz, Frequency Stability ±20 ppm, Frequency Tolerance ±10 ppm, Load Capacitance 12 pF, Equivalent Series Resistance 150. Tags: Surface Mount. More details for ECS-160-12-37B-CTN-TR can be seen below.