金洛电子:专业供应低频圆柱晶振:体积:3*8,2*6,1*5,1*4。频率有:32.768K,38.000K、40.000K、75.000K,77.503K,76.8K,60.000K等,国产3X8厂家现货直接供应,2*6+-20PPM,2*6+-50PPM,2*6+-100PPM国产3X8厂家