The OC-X87XXXXX-X Series from NEL Frequency Controls is a OCXO with Frequency 8 to 160 MHz, Supply Voltage 3.15 to 5.25 V, Output Load 10KOhm//15pF, Phase Noise -155 to -140 dBc/Hz, Phase Noise 1 kHz -140 dBc/Hz. Tags: Drop-in, Low G-Sensitivity. More details for OC-X87XXXXX-X Series can be seen below.