The ECS-TXO-2520MV-120-AN-TR from ECS Inc. International is a TCXO with Frequency 12 MHz, Supply Voltage 1.7 to 3.6 V, Current 4.8 mA, Frequency Stability ±2.5 ppm, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount. More details for ECS-TXO-2520MV-120-AN-TR can be seen below.