The HPXO128 from Synergy Microwave Corporation is a XO with Frequency 128 MHz, Supply Voltage 11.4 to 12.6 V, Frequency Stability ±0.2 to ±0.5 ppm, Current 120 mA (Steady State), Jitter 6 to 10 fs. Tags: DIP, Low Power, Low G-Sensitivity. More details for HPXO128 can be seen below.