50MHz有源晶振 D3SX50E000002E 30PPM 1.8V 3.3V 鸿星晶振 ¥2.70 TXC晶振 32MHz贴片无源晶振 12PF 10PPM 8Y32005001 2016晶体 ¥0.65 37.4MHz晶振 8Y37470007 2016封装 8PF 10PPM TXC晶振 ¥0.65 38.4MHz晶振 2016贴片晶振 10pF ±10ppm 8Y38472012 TXC晶振 ¥0.65 8MHz晶振 5032晶振 E5FA8.00000F20E22 20PF 20PPM 鸿星晶振 ¥0.90 8Y40072002 40MHz晶振 2016封装 8PF TXC晶振 ¥0.65