The T7x3 TCXO Series from Connor-Winfield is a TCXO with Frequency 6.4 to 40 MHz, Supply Voltage 3.3 V, Frequency Stability +/-0.28 to 1.0 ppm, Operating Temperature -20 to 70 °C. Tags: Surface Mount. More details for T7x3 TCXO Series can be seen below.