The 7B025000O01 SMD Crystal Resonators 25MHz ±10ppm SMD-3225_4P RoHS is an electronic component manufactured by HD-Crystal. This resonator is more commonly known as a quartz crystal and is used to control the frequency of an oscillator circuit in a range of devices, including radios, watches, and computers. It is a surface-mount device (SMD) and has 4 pins. The crystal is crystal cut to the exact frequency of 25 MHz (+/- 10ppm), and it features a very small form factor, measuring 3225 mm in size.The 7B025000O01 resonator is built to RoHS standards, which means that it is free from hazardous materials and is safe for use in electronics.