The VCTCXO1000QST3-25MHz from Dynamic Engineers is a TCVCXO with Frequency 25 MHz, Supply Voltage 3.3 V or 5V, Frequency Stability 0.28 ppm, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount. More details for VCTCXO1000QST3-25MHz can be seen below.