The ECS-196.6-12-33Q-JES-TR from ECS Inc. International is a RF Quartz Crystal with Frequency 19.6608 MHz, Frequency Stability ±50 ppm, Frequency Tolerance ±20 ppm, Load Capacitance 12 pF, Equivalent Series Resistance 80. Tags: Surface Mount. More details for ECS-196.6-12-33Q-JES-TR can be seen below.