The 12SMX AUTO from IQD Frequency Products is a RF Quartz Crystal with Frequency 6 to 125 MHz, Frequency Stability ±50 to ±150 ppm, Frequency Tolerance ±10 to ±50 ppm, Drive Power Level 50 µW, Load Capacitance 8 to 75 pF. Tags: Ceramic. More details for 12SMX AUTO can be seen below.