The ZTTCW27MX is a 27MHz ceramic SMD resonator manufactured by QLT Power that measures 2.5 x 2 x 1.5mm. The resonator has a frequency accuracy of ±0.5%, making it suitable for use in applications that require precise frequency control. It is a low-cost, low-profile SMD (surface mount device) component that has a higher frequency range than crystal oscillators, but a low temperature drift and stability. In addition, the ceramic resonator is suitable for automotive, communication, and industrial applications.