The M7S and M8S Series from MtronPTI is a XO with Frequency 1 MHz - 125 MHz, Supply Voltage 3.3 V, 5.0 V, Temperature Stability ±20 ppm, ±25 ppm, ±30 ppm, ±50 ppm, ±100 ppm, ±500 ppm, ±1000 ppm, Operating Temperature -55 °C to +125 °C. Tags: Surface Mount. More details for M7S and M8S Series can be seen below.