Product Description
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The Cornell Dubilier silver mica capacitor (300V) is a high-precision, ultra-stable capacitor designed for applications where accuracy, low loss and long-term reliability are critical.
Silver mica capacitors are widely regarded as one of the most stable capacitor types available, offering extremely low leakage, minimal capacitance drift and excellent performance across a wide frequency range. This makes them ideal for tone circuits, RF applications and high-quality audio electronics.
Key Features
- Voltage Rating: 300V DC
- Dielectric Type: Silver Mica
- Capacitance Stability: Extremely stable over time and temperature
- Tolerance: Typically tight (often ±1% to ±5%)
- Low Loss: Very low dissipation factor
- High Q Factor: Excellent for high-frequency circuits
- Construction: Epoxy-sealed for durability and moisture resistance
Performance & Characteristics
Silver mica capacitors use thin layers of mica coated with silver electrodes, resulting in exceptional electrical stability and very low dielectric absorption. Compared to ceramic or electrolytic capacitors, they maintain their value far more accurately over time and under varying environmental conditions.
They are particularly valued in:
- High-frequency and RF circuits
- Oscillators and filters
- Guitar amp tone shaping and bright caps
- Precision timing applications
Applications
- Guitar amplifier tone circuits (bright caps, treble shaping)
- RF and radio frequency circuits
- Oscillators and resonant circuits
- Vintage amp restoration
- Precision electronic circuits
Why Choose Cornell Dubilier
Cornell Dubilier is a highly respected manufacturer known for producing premium-quality capacitors with consistent performance and long service life. Their silver mica capacitors are trusted in both vintage restorations and modern high-reliability designs.
Notes
- Non-polarised capacitor
- Ideal where stability and tone consistency matter
- Excellent upgrade over standard ceramic capacitors in audio paths
