TKD泰晶石英晶体8MHz20PF20PPM3225无源晶振 封装尺寸:5032/3225/2520/2016/1612/1210 常用频点:8M/12M/16M/24M/25/26M/27.12M 常用频点:40M/48M/52M/76.8M/80M/