12MHZ/3.3V 12mhz/3225/12pf/20ppm 12mhz/3225/20pf/20ppm 12MHZ/49S 12MHZ/49S/12PF/20PPM 12MHZ/49S/12PF/30PPM 12MHZ/49SMD 12mhz/HC49s/12pf/20ppm 12MHZ/HC49SU/20PF/20PPM 12MHZ_20PPM