Electrical Characteristics of Silver Mica Capacitors in High-Frequency Circuits

Mica is a mineral dielectric known for stable electrical, mechanical, and chemical properties.
Its dielectric constant typically ranges from 5 to 7, supporting predictable capacitance in precision circuits.
Due to natural material variability, mica used in capacitors is carefully selected and classified to ensure consistent performance.

Dielectric Behavior

Silver mica capacitors exhibit minimal capacitance change with applied voltage and frequency.
Low power factor and high Q characteristics make them suitable for resonant and frequency-selective networks.
These properties support stable operation in RF and high-frequency analog circuits.

• Low voltage coefficient of capacitance
• High Q factor for resonant circuits
• Low power factor across frequency range
• Stable dielectric properties

Capacitance and Voltage Range

Standard dipped silver mica capacitors are available with capacitance values from 1 pF to 22,000 pF.
Typical voltage ratings range from 50 V to 1000 V, supporting use in both low- and medium-voltage high-frequency circuits.

• Capacitance range: 1 pF to 22,000 pF
• Voltage range: 50 V to 1000 V
• Suitable for precision tuning applications

Applications

• RF oscillators
• Tuned circuits
• Impedance matching networks
• High-frequency filters
• Precision analog signal paths

Design Considerations

• Select capacitance tolerance based on frequency stability requirements
• Verify voltage rating for RF amplitude conditions
• Use high Q components for low-loss resonant networks
• Consider material classification for precision applications

For detailed electrical specifications and dimensional data, refer to the silver mica capacitor datasheet.

For design-in support and technical inquiries, please contact:

sales@suntan.com.hk

info@suntan.com.hk