30MHz 20PF 20PPM 30MHZ 3225 10PPM 12PF 30MHZ HC-49S 30MHZ(4.5X8-2P) 30MHZ/AT-41 30MHZ/ZPB-26/3.3V/-40 30MHz+-30ppm 30MHZ晶振 30MIC 3M261X LF AO 3MIL 5 IN 30MIC 3M261X ROLL 4