SIWARD希华晶体19.2M 3.3V0.5PPM2016温补晶振 封装尺寸:3225/2520/2016/1612 主要频点:25M/26M/52M/19.2M/38.4M 温度范围:-40℃~85℃/-40℃~105℃/-40℃~125℃ 典型应