The ECS-271.2-8-36-AGM-TR from ECS Inc. International is a RF Quartz Crystal with Frequency 27.12 MHz, Frequency Stability ±30 ppm, Frequency Tolerance ±25 ppm, Load Capacitance 8 pF, Equivalent Series Resistance 60. Tags: Surface Mount. More details for ECS-271.2-8-36-AGM-TR can be seen below.