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Film Capacitors

Film capacitors, also known as plastic film capacitors or film dielectric capacitors, are capacitors that use a thin plastic film as the dielectric. Their physical dimensions can range from minuscule surface-mount devices less than 0.2 in. (5mm) in length to large power factor correction (PFC) capacitors which can be around 22 in. (56cm) tall. Film capacitors come in two main physical configurations - axial-leaded and insulated metal-enclosed (IME or box) capacitors. The IME-configured capacitors are often referred to as “can” capacitors.

The DLR1D1K-F is a film capacitor from United Chemi-Con with a leaded configuration. The capacitance value of this device is 1 uF and its rated voltage is 2.5KV AC (50/60Hz) for 5 seconds. The device has a temperature range of -30~+85C with insulation resistance greater than or equal to 100MOhm. Its lead spacing is 5mm in between its radial leads and its operating life is greater than 3000 hours at 70C.

Application Field

The DLR1D1K-F is mostly used in high voltage pulse load and high frequency circuits such as:

• Inverters
• Power Supplies & SMPS
• UPS & Data Centers
• Motor Drives
• Tesla Coils & High voltage generator
• Communication Systems & Electronic parts
• Wireless Communications & High Voltage Applications
• Audio & Video Equipment & Power Circuits

Working Principle

The working principle of the DLR1D1K-F is based on the Faraday’s Law of Electrostatics. In a capacitor, this law states that the charge stored is proportional to the voltage across the two plates. Due to this, the DLR1D1K-F is able to store electric energy and separate it from the power source. It also helps to improve the power factor in the entire circuit. The dielectric film used in this capacitor, also known as polyester, is a high-grade material with blistering arc resistance, heat resistance and excellent dielectric strength.

The capacitance value of the DLR1D1K-F is 1 uF and its rated voltage is 2.5KV AC (50/60Hz) for 5 seconds. This makes it perfect for applications that require a high-voltage rating and a relatively low value of capacitance. The device has an operating temperature range of -30 to +85C and has an insulation resistance greater than or equal to 100MOhm. The device is also UL, VDE, and CSA certified.

Aside from its practical uses, the DLR1D1K-F has the added advantage of being an environmentally friendly device. The film used in its construction is non-toxic and is RoHS complaint.

Conclusion

The DLR1D1K-F from United Chemi-Con is a film capacitor that is suitable for high voltage pulse load and high frequency circuits. Its high capacitive value, wide operating temperature range, and excellent dielectric strength make it an ideal choice for a variety of applications. This device is also environmentally friendly, making it a great option for eco-friendly applications.

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