The 501-24762d-01 from Quantic Wenzel (Wenzel Associates, Inc.) is a OCXO with Frequency 100 MHz, Supply Voltage 12 V, Phase Noise -127 dBm/Hz@100 Hz to -95 dBm/Hz@10 Hz, Phase Noise 1 kHz -152 dBm/Hz, Phase Noise 10 kHz -172 dBm/Hz. Tags: PCB Mount, Low G-Sensitivity. More details for 501-24762d-01 can be seen below.