R76UI01004040J

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Film capacitors are used in numerous electronics and electrical engineering varieties, from power supplies to amplifiers and even audio speakers. Primarily, film capacitors have a plastic film that is coiled around an insulator. This is then connected to two metal plates or terminals, one being the cathode and the other the anode. The R76UI01004040J film capacitor is advantageous to a variety of applications primarily in its unique qualities, such as better temperature stability, high dielectric strength, and improved electrical characteristics.

Documentation and Specifications

The R76UI01004040J film capacitor has the following technical specifications:

• Dissipation factor (tanΔ): ≤ 0.10
• Rated voltage: 630VAC
• Tolerance ± 5%
• Insulation resistance: ≥ 10,000MΩ
• Operating temperature: -40°C to 125°C
• Capacitance (pF): 100

Application Fields

Given its sophisticated technical specifications, the R76UI01004040J capacitor is used widely in a variety of application fields. In power equipment, they are primarily used in high voltage, high frequency applications. This includes suppression and interference filters, PV inverters, UPS devices, welding machines, and grounding devices. They are also popularly used in automotive electronic products such as driver-assist systems, ECUs, and many more.

In audio and video related products, the film capacitor further provides design flexibility with its low dissipation factor, high temperature resistance, and tight capacitance range. It is used in high-end audio and video cables, power and charging cables, and three-phase motor driver circuits. Moreover, other types of products such as antennas, transformers, and medical equipment also employed this type of capacitor.

Working Principle

The film capacitor operates by blocking alternating current while allowing direct current to pass through it. It is achieved when electricity goes through a small space between two terminals, which creates an electrical field. As the electricity passes through, a polarized dielectric film will also be developed, further allowing for more charges to accumulate, effectively creating a ‘capacitor’. This capacitor works to hold the electrical field between two distant points and can be discharged both immediately or through gradual use.

When in use, the capacitors will function to eliminate ground loops and provide noise filtering as well as transient voltage suppression. Note that the capacitance of a film capacitor can be changed simply by adjusting the length and width of the intervening film. This even allows for both wet and dry film capacitors with distinct advantages and disadvantages.

Overall, the R76UI01004040J is a unique film capacitor with its low disipation factor, high insulation resistance, and wide operating temperature. Utilizing the above qualities makes this capacitor attractive to various applications, such as power equipments, audio and video related products, automotive electronics, antennas and tranformers, and medical equipments.

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