CD15FD121FO3F 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 120 pF with a rated voltage of 1500 Vdc, meeting EIA RS153B dimensional specifications. The device exhibits excellent stability characteristics with an operating temperature range of -55°C to +150°C, supporting high-speed pulse applications with a minimum dV/dt pulse capability of 100,000 V/µs. The CD15 package variant provides dimensions of 0.77 inches (19.6 mm) length, 0.85 inches (21.6 mm) height, and 0.25 inches (6.4 mm) thickness. These capacitors are widely used in precision timing circuits, RF applications, and instrumentation where stable capacitance and low loss are essential.