Abracon Crystals ABLS2-20.000MHZ-B4Y-T is a quartz crystal oscillator designed for use in a variety of electronic applications. It has a frequency of 20.000MHz, a capacitance of 18pF, and a temperature stability of 30ppm over a temperature range of -20C to +70C. This crystal oscillator is suitable for use in a wide range of applications, including frequency control, timing, and synchronization. It is also suitable for use in radio frequency (RF) applications, such as wireless communication systems, and in digital signal processing (DSP) applications. The ABLS2-20.000MHZ-B4Y-T is a reliable and cost-effective solution for a variety of electronic applications.