CD19FD821JO3F is a standard dipped silvered mica capacitor designed for timing and close tolerance applications requiring stable capacitance over a wide temperature range. This capacitor features a capacitance value of 820 pF with a ±5% tolerance (J grade) and a rated voltage of 500 Vdc, meeting EIA RS153B dimensional specifications. The device operates reliably from -55°C to +125°C and demonstrates exceptional stability with a minimum dV/dt pulse capability of 100,000 V/µs, making it suitable for precision timing circuits, RF applications, and high-reliability electronic systems where capacitance stability and low distortion are critical requirements.