This is a small-form-factor ceramic capacitor with a capacitance value of 4.1 picofarads and a tolerance of ±0.1 picofarads. It has a working voltage rating of 25 volts and uses the C0G/NP0 dielectric material, making it suitable for use in applications requiring low temperature coefficient and high stability. The part number is 008004, and it comes in a 0201 metric package size.