Film Capacitors

Film capacitor working principle

A film capacitor is a type of capacitor that uses a thin layer of a dielectric material, such as polyester or polycarbonate, as the capacitor’s insulating layer. This thin film is sandwiched between two metal electrodes, which serve as the capacitor’s plates. When a voltage is applied across the electrodes, an electric field is created in the dielectric material, causing positive charges to accumulate on one electrode and negative charges on the other. This creates an electrical charge separation, or “capacitance,” between the electrodes.

The capacitance of a film capacitor is determined by the surface area of the electrodes, the distance between the electrodes, and the dielectric constant of the insulating material. When a current flows through the capacitor, the charges on the electrodes are redistributed, allowing the capacitor to store and release electrical energy as needed.

film capacitors are widely used in a variety of electronic circuits and devices, such as power supplies, audio equipment, and motor drives, due to their high capacitance and low losses at high frequencies. They are also known for their stability and good temperature performance.

Some key features of film capacitors include

High capacitance: film capacitors have a high capacitance value, making them well-suited for use in applications where a high level of energy storage is required.

Low loss: film capacitors have a low dielectric loss, resulting in minimal energy loss and a high level of efficiency.

Good stability: film capacitors have a low drift rate and are stable over a wide range of temperatures, making them suitable for use in precision circuits.

High insulation resistance: film capacitors have a high level of insulation resistance, making them resistant to electrical breakdown and suitable for use in high-voltage applications.

Self-healing ability: film capacitors have a high self-healing ability, allowing them to recover from minor physical damage to the dielectric film.

Wide temperature range: film capacitors can operate over a wide temperature range, making them suitable for use in a variety of environments.

Compact size: film capacitors are available in a variety of sizes and shapes, making them suitable for use in compact electronic circuits.

Produce Introduce

Jimson Capacitors of this MPC type is encased, it can be yellow or black. It can be high property moisture resistance, and superphysical and environmental characteristics. Metalized Capacitors are available with different values of general and value ratings. They are used for DC pulsation, pulse, and AC voltage reduction in instruments, meters, TV sets, and household electrical appliances. As a Manufacturer of more than 30 years, We are committed to offering our clients a wide range of Metalized Capacitors, which is highly appreciated for international quality standards. We are looking for bulk inquiries for Metallized Polypropylene Capacitor, MPC Series encased capacitors, etc.

Film dielectrics, polymer films, and plastic films are other names for film capacitors. Film capacitors offer the advantages of being cheap and having an endless shelf life. The opposing side of a film capacitor is metalized and has a thin dielectric layer. Film capacitors are rolled into a film based on the application. These capacitors can withstand voltages between 50 V and 2 kV.

A ceramic capacitor is considered to be one of the most commonly used capacitors. The material used in this capacitor type is dielectric. Also, ceramic capacitors are non-polar devices which means that they can be used in any direction in the circuit.

Feature:

1.Non-inductive construction and self-healing
2.High property moisture resistance
3.Super physical and environmental characteristics

Climatic conditions   -40–+100℃ 

Capacitance Range 0.01uF—0.47uF 

Capacitance Tolerance  (±5%);(±10%)  

Withstand voltage Interelectrode: 4.3UR 2S Polar shell: 2000VAC 2S ≤0.3µF ≥30000MΩ

Insulation resistance or time constant:>0.3µF ≥10000S(MΩ.µF)

Product Features:

Box type provides the identical outer appearance
The very low loss at high frequency, suitable for high current.
High insulation resistance, and long life due to self-healing effect.
Withstanding 2.5Kv impulse voltage, Class X2
As an across-the-line type noise suppression capacitor, and suitable for AC purpose