The JXS21P4 from Jauch Quartz is a RF Quartz Crystal with Frequency 16 to 60 MHz, Frequency Stability ± 15 ppm, ±20 ppm, ±25 ppm, ±30 ppm, ±50 ppm, ±100 ppm, Frequency Tolerance ±10 ppm / ±20 ppm / ±30 ppm, Drive Power Level 100 uW, Load Capacitance 6 pF / 8 pF / 10 pF / 12 pF. Tags: Ceramic, Surface Mount. More details for JXS21P4 can be seen below.