4.5x4.5x3.8贴片 4.5X4.5X5H 4.60044E+14 4.6080MHZ HC49 20/50/-40+85°C/30PF 4.608MHZ 4.608MHZ/20PF 4.608MHZ/30PF 4.608MHZ-5V 4.60E+11 4.60E+14