CD17FD121JO3F is a high-frequency mica capacitor engineered for CATV and RF applications, delivering controlled resonance-free performance through 1 GHz. The device features a typical dissipation factor of 0.0005, ultra-low ESR for cool operation, and a minimum dV/dt capability of 100,000 V/µs, ensuring reliable performance in demanding RF environments. With near-zero capacitance change with temperature, voltage, and frequency, combined with very high Q at UHF/VHF frequencies, this capacitor maintains low, notch-free impedance beyond 1 GHz. The shockproof and delamination-free construction makes it ideal for precision RF tuning, filtering, and coupling applications in telecommunications and broadcast systems.