The ZT600 from Euroquartz Ltd is a TCXO with Frequency 10 to 125 MHz, Supply Voltage 3.3 to 5 V, Phase Noise -155 to -140 dBc/Hz, Phase Noise 1 kHz -140 dBc/Hz, Phase Noise 10 kHz -150 dBc/Hz. Tags: Surface Mount, Low G Sensitivity. More details for ZT600 can be seen below.