C0G MLCC: Key Benefits and Applications in Electronics

What are C0G MLCCs?

• C0G MLCCs are ceramic capacitors with high stability and reliability.
• Made with temperature-compensating EIA Class I ceramic material with neodymium, samarium and other rare earth oxides.
• C0G MLCCs have low tempco and high capacitance value.

Features and Benefits

• High stability and reliability over wide temperature range (-55°C to 125°C).
• Low tempco (±30ppm/°C) and high capacitance value.
• Negligible capacitance drift or hysteresis (<±0.05%).
• Low dielectric absorption and high insulation resistance.
• Suitable for high frequency applications due to low ESR and ESL.

Ceramic Capacitor Types and Classes

• Ceramic capacitors are classified into three main classes: Class I, Class II and Class III.
• Class I capacitors like C0G are high stability and low tempco.
• Class II capacitors like X7R and X5R are more common and balanced between stability and capacitance value.
• Class III capacitors like Y5V are high capacitance value but lower stability.

Design Considerations for C0G MLCCs

• Consider the operating temperature range and voltage coefficient when selecting a C0G MLCC.
• Ensure the capacitor is rated for the required capacitance value and voltage.
• Consider the DC bias effect and short circuit current when designing with C0G MLCCs.
• Use the right dielectric material and formulation to minimize capacitance change and temperature compensating.

Applications of C0G MLCCs

• C0G MLCCs are suitable for high frequency applications like RF and microwave circuits.
• Used in audio and video equipment like filters and coupling capacitors.
• C0G MLCCs are used in medical devices like defibrillators and ultrasound equipment.
• Suitable for automotive and aerospace applications due to high reliability and stability.

Conclusion

• C0G MLCCs have high stability and reliability.
• Low tempco and high capacitance value makes them suitable for high frequency applications.