含铅或表面贴装石英晶体 Leaded or Surface Mount Quartz Crystal
±30ppm 晶体 系列 HC-49/US
得捷: CRYSTAL 4.0000MHZ SERIES TH
艾睿: Crystal 4MHz ±30ppm Tol ±50ppm Stability Series FUND 120Ohm 2-Pin HC-49/US Thru-Hole Bulk
CTS 西迪斯