The M1 Series from MtronPTI is a XO with Frequency 1.5 MHz - 125 MHz, Supply Voltage 5.0 V, Temperature Stability ±20 ppm, ±25 ppm, ±35 ppm, ±50 ppm, ±100 ppm, Operating Temperature -55 °C to +125 °C. Tags: Surface Mount. More details for M1 Series can be seen below.