04025J3R0ABSTR\500

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Thin Film Capacitors (04025J3R0ABSTR\500)

Thin film capacitors are a type of capacitor that uses a thin layer of metal deposited on an insulating substrate as the dielectric. They are notable for their small size, superior capacitance values, and long capacitance-to-size ratio. Thin film capacitors are used in a variety of applications, including energy storage, signal filtering, and power conditioning. Thin film capacitors are often used in place of traditional electrolytic capacitors due to their smaller size, longer lifespan, and high capacitance values.

Application Field

Thin film capacitors are often used in high density applications. As they are much smaller than traditional electrolytic capacitors, they can be used in place of multiple electrolytic capacitors to achieve a more compact design. This is especially advantageous in applications where space is at a premium, such as in laptops and other portable electronics. Thin film capacitors are also well-suited for use in high-frequency applications, as their low-inductance design reduces their self-resonant frequency.

Thin film capacitors can also be used to improve the noise performance of power supplies, as well as to protect sensitive components from voltage spikes or other transients. Furthermore, thin film capacitors have excellent tolerance for temperature and humidity, as well as good temperature stability. This makes them ideal for use in automotive applications, where they can be used to reduce noise and filter voltage ripple.

Working Principle

A thin film capacitor consists of a thin metal film deposited on an insulating substrate. A single layer of metal is deposited on one side of the substrate, while two layers are deposited on the other side. The metal layers are connected together through a thin bridge, forming a parallel plate capacitor. The metal layers act as the two plates of the capacitor, while the insulator acts as the dielectric material.

When an electric current is applied to the thin film capacitor, the metal layers become charged. The electric field between the two metal layers creates an electrostatic force, which is stored in the capacitor as electrostatic energy. This energy can be released when the voltage across the capacitor is reversed, allowing the metal layers to discharge. The amount of charge stored in the capacitor is proportional to the capacitance of the capacitor, which is determined by the size of the metal layers and the thickness of the dielectric material.

The performance of thin film capacitors is strongly dependent on their environment. The dielectric material must remain clean and dry in order to maintain its high dielectric constant, which is necessary for high capacitance values. Additionally, the metal layers must be securely connected to the substrate in order to minimize thermal and electrical losses.

Thin film capacitors are also relatively immune to damage from electrostatic discharge. This makes them ideal for use in environments where electrostatic discharge is prevalent, such as in laboratories and electronics manufacturing facilities.

Conclusion

Thin film capacitors are a type of capacitor that offers superior capacitance values and long capacitance-to-size ratios. They are typically used in high density applications, such as laptops and portable electronics, as well as in high frequency applications, power supplies, voltage protection circuits, and automotive applications. The working principle of thin film capacitors is based on the electric field between two metal layers, as well as the dielectric material used between them. The performance of thin film capacitors depends on their environment and proper connection of the metal layers to the substrate.

The specific data is subject to PDF, and the above content is for reference