Film Polyester Box Capacitor

Feature of polyester box capacitor

1.Rectangular flame retardant plastic shell, flame retardant epoxy resin encapsulation, one-way lead structure.

2.Small volume, light weight, good self-healing performance.

3.Can withstand the action of large pulse current, high reliability.

4.Used in DC or pulsating circuits, especially suitable for color TV, whole machine, etc.

Application of polyester box capacitor

1.Filter and noise suppression circuit
2.Pulse, logic and timing circuit
3.DC-blocking, by-passing and signal coupling in general communications

Polyester box capacitors, also known as polyester film capacitors, are passive electronic components that are widely used in a variety of applications such as power supplies, coupling and decoupling circuits, and audio equipment. The specific specifications of a polyester box capacitor can vary based on the manufacturer and the particular model, but some common specifications include:

• Capacitance: This is the electrical charge stored in the capacitor and is usually measured in Farads (F). Capacitance values for polyester box capacitors can range from a few pico-Farads to tens of micro-Farads.
• Voltage rating: This is the maximum working voltage that a capacitor can safely handle and is usually specified in Volts (V). The voltage rating for polyester box capacitors can range from 50V to 630V or higher.
• Tolerance: This is the deviation from the nominal capacitance value and is usually specified as a percentage. Common tolerances for polyester box capacitors include ±5%, ±10%, and ±20%.
• Dissipation factor (DF): This is a measure of the efficiency of the capacitor and is usually specified as a decimal fraction. A low DF indicates a high-quality capacitor with low power losses.
• Equivalent series resistance (ESR): This is a measure of the resistance of the capacitor and is usually specified in Ohms. A low ESR indicates a high-quality capacitor with low power losses.
• Operating temperature range: This is the range of temperatures in which the capacitor can safely operate. The temperature range for polyester box capacitors can vary, but is typically between -55°C and +105°C.
• Terminal type: Polyester box capacitors can have a variety of terminal types, including radial leads, axial leads, and screw terminals.

A polyester box capacitor, also known as a polyester film capacitor or a polyester film box capacitor, is a type of capacitor that uses a polyester film as the dielectric material. It is typically housed in a box-shaped plastic or metal casing for protection and electrical insulation.

Here are some key features and characteristics of polyester box capacitors:

1. Dielectric Material: Polyester box capacitors utilize a polyester (PET) film as the dielectric material. Polyester film offers good insulation properties, stability, and low losses, making it suitable for a wide range of applications.

2. Capacitance Range: Polyester box capacitors are available in a wide range of capacitance values, typically ranging from a few picofarads (pF) to several microfarads (µF). The specific capacitance value determines the amount of electrical charge the capacitor can store.

3. Voltage Rating: Polyester box capacitors have a specified voltage rating that indicates the maximum voltage they can withstand without breaking down. Common voltage ratings range from a few volts to several hundred volts, depending on the capacitor’s size and construction.

4. Construction: Polyester box capacitors have a rectangular or box-shaped casing, typically made of plastic or metal, which provides physical protection and electrical insulation. The polyester film is wound or stacked with metal foil electrodes, creating the capacitor structure.

5. Applications: Polyester box capacitors are commonly used in various electronic applications, including power supplies, filters, decoupling circuits, audio equipment, and lighting systems. They are suitable for both AC and DC circuits and can handle moderate voltage and current levels.

6. Temperature Stability: Polyester box capacitors generally offer good temperature stability, allowing them to operate reliably across a wide temperature range. However, they may have limitations when exposed to extreme temperature conditions.

7. Cost-Effectiveness: Polyester box capacitors are generally cost-effective compared to some other types of capacitors. They offer a good balance of performance, reliability, and affordability, making them a popular choice in many applications.

When selecting a polyester box capacitor, it is important to consider the desired capacitance, voltage rating, physical dimensions, temperature range, and any other specific requirements of the circuit or system. Always refer to the manufacturer’s datasheet or specifications for detailed information on the specific polyester box capacitor you are using.

Polyester box capacitor manufacturers

We are committed to offer our clients a wide range of polyester box capacitor, which is highly appreciated for international quality standards. These polyester box capacitor are available with different values of general and value ratings and are used in the designing of various circuits of electronic and electric appliances.
This product is widely used for DC pulsation, pulse, and AC voltage reduction in instruments, meters, TV sets and household electrical appliances. It is especially suitable for various types of energy-saving lamps and electronic rectifiers.
We are looking for bulk enquiries for polyester box capacitors, metallized polypropylene film capacitor, MPC series encased capacitors etc.