The ECS-80-12-33Q-GN-TR from ECS Inc. International is a RF Quartz Crystal with Frequency 8 MHz, Frequency Stability ±30 ppm, Frequency Tolerance ±30 ppm, Load Capacitance 12 pF, Equivalent Series Resistance 500. Tags: Surface Mount. More details for ECS-80-12-33Q-GN-TR can be seen below.