The ECS-270-8-33-JGL-TR from ECS Inc. International is a RF Quartz Crystal with Frequency 27 MHz, Frequency Stability ±30 ppm, Frequency Tolerance ±20 ppm, Load Capacitance 8 pF, Equivalent Series Resistance 40. Tags: Surface Mount. More details for ECS-270-8-33-JGL-TR can be seen below.