DMM4P47K-F

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Film Capacitors

Film capacitors, also known as dielectric capacitors, are electronic components that use thin film to store electrical charge. They are used in a wide range of consumer electronics, from AC adapters to fluorescent lights. The DMM4P47K-F film capacitor is a polyester film capacitor designed to operate in applications where high-stability and low internal losses are required. It is categorized as a negative temperature coefficient (NTC) capacitor and can be used in a variety of applications.

Application Fields

The DMM4P47K-F polyester film capacitor is ideal for use in high-reliability applications requiring precise frequency response and low internal losses. Some of the application fields that make use of this type of capacitor include:

• Audio: DMM4P47K-F film capacitors can be used in loudspeakers, headsets, microphones, amplifiers, and other audio-related components. They provide superior sound quality due to their low internal losses and precise frequency response.
• Power Supply: DMM4P47K-F capacitors are also used in power supplies, such as in DC-DC converters, voltage regulators, and uninterruptible power supply (UPS) systems. The low internal losses and precise frequency response of this type of capacitor ensure stable power supply for sensitive electronic equipment.
• Automotive Electronics: The DMM4P47K-F is often used in automotive electronic components, such as passenger comfort systems, security systems, and active chassis systems. Its low internal losses and precise frequency response make it an ideal choice for these types of applications.
• Industrial Electronics: In industrial applications, DMM4P47K-F film capacitors are used in relays, motor controllers, and other devices. They provide superior performance due to their low internal losses and precise frequency response.

Working Principle

The working principle of the DMM4P47K-F capacitor is based on the fact that it stores electrical energy in its thin film. This type of capacitor is based on the structure of an electrolytic capacitor and utilizes a thin polyester dielectric material instead of an electrolyte, which provides superior electrical characteristics. The capacitor consists of a ceramic disc, which is coated with a thin layer of copper nature. On top of this is a thin film dielectric layer made of polyester, which is used to separate the conductive plates of the capacitor. The metal plates, ceramic disc, and dielectric material are connected to two power terminals.

When a positive voltage is applied to one of the power terminals, the other terminal will become negative. This creates an electric field inside the capacitor, which causes the electric charges to redistribute, thus creating an electric current throughout the capacitor\'s structure. As the electric current flows, it creates a net charge within the capacitor that is proportional to the amount of voltage applied. The electric field created within the capacitor also causes the material of the dielectric layer to resist the flow of the electric current, resulting in reduced losses and improved frequency response.

The superior performance of the DMM4P47K-F film capacitor is attributed to its low internal losses and precise frequency response. The capacitor offers excellent temperature stability due to its NTC characteristics, and is resistant to moisture and other environmental factors. The design of DMM4P47K-F allows for increased reliability and reliability, making it an ideal choice for high-reliability applications.

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