The XO2520S-33.33MHz-A from Dynamic Engineers is a General Crystal Oscillator with Frequency 33.33 MHz, Supply Voltage 3.3 V, Phase Noise -156 dBc/Hz, Phase Noise 10 kHz -156 dBc/Hz, Frequency Stability ±50 ppm. Tags: Surface Mount. More details for XO2520S-33.33MHz-A can be seen below.