TCXO (Temperature compensated crystal oscillator) is a kind of crystal oscillator. TCXO provide a stable clock signal with temperature compensated circuit and good performance Crystal unit over wide temperature range. The XNCHH Series consists of high quality quartz crystal unit and excellent temperature compensation circuit, which are packaged with high circuit technology and high measurement technology. The XNCJH Series consists of high quality quartz crystal unit and excellent temperature compensation circuit, which are packaged with high circuit technology and high measurement technology. The XTCLH Series consists of high quality quartz crystal unit and excellent temperature compensation circuit, which are packaged with high circuit technology and high measurement technology. This product has especially excellent frequency stability.