The Cornell Dubilier CD17FD121JO3F is a high-frequency mica capacitor specifically engineered for demanding applications in CATV and RF circuits. Its construction ensures controlled resonance-free performance up to 1 GHz, characterized by exceptionally flat insertion loss. The capacitor's robust design provides shock resistance and minimizes capacitance drift under varying conditions, making it suitable for environments requiring high reliability and stability. It is interchangeable with common mica capacitors and offers a combination of low ESR, high Q, and a wide voltage range, contributing to efficient and cool operation in various electronic systems.