C27000H125 with SMD Crystal Resonators 27MHz ±20ppm HC-49S/SMD RoHS is a low-frequency crystal resonator manufactured by East Crystal. It has an oscillating frequency of 27MHz which is in the range of low-frequency crystals, and it can be used in a variety of electronic applications. The crystal resonator has a frequency tolerance of ±20ppm, and is made with a HC-49S/SMD package that is in compliance with the RoHS regulations. The C27000H125 can be used in radios, alarms, and oscillators for applications that require an accurate and stable oscillation frequency.