The M6049 and M6050 Series from MtronPTI is a TCXO with Frequency 8 MHz - 52 MHz, Supply Voltage 3.3 V, 5.0 V, Temperature Stability ±0.5 ppm, ±1.0 ppm, ±2.0 ppm, ±2.5 ppm, ±4.6 ppm, ±10 ppm, Operating Temperature -40 °C to +85 °C. Tags: Dual In-line. More details for M6049 and M6050 Series can be seen below.