DME1W1P2K

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Film capacitors, also referred to as plastic film capacitors, are electronic devices that use a thin layer of plastic film as the dielectric layer between two electrodes. Compared to ceramic or electrolytic capacitors, they offer superior temperature stability, higher insulation resistance, and low losses, and are used in a number of applications where high frequency or low-noise operation is required, such as in power electronics, communication systems, audio systems, and automotive electronics.

One of the most popular and reliable film capacitors is the DME1W1P2K capacitor from KEMET, which is designed for high power applications in the frequency range of 10-1000 kHz. This capacitor is constructed from a thin polyester film, with two sheet electrodes on each side, and is wrapped in a plastic laminate for insulation. It offers a high temperature range of up to 105°C, and a low ESR of 1.4 ohms.

The DME1W1P2K is ideal for applications in inverteres, motor drives, and switchgear, as it combines high reliability with low ESR. It is also used in filter circuits and output rectifier circuits, as it offers excellent frequency stability, minimal noise generation, and extremely low inductance. The robust construction also provides excellent vibration and shock protection, making it the ideal choice for harsh environments.

The working principle of the DME1W1P2K is relatively simple. When a voltage is applied across the capacitor, the charges on the two electrodes react against each other, resulting in an electric field that pushes the charges away from each other. The dielectric layer between the two electrodes acts as a barrier, preventing the charges from flowing between the two electrodes and maintaining a potential difference between them. By manipulating the size and shape of the electrodes, the capacitance can be tuned for specific applications.

In addition, the DME1W1P2K also offers excellent charge-discharge characteristics at high frequencies, making it well suited for applications requiring quick charging and discharging of high power. This is achieved by using a multilayer construction, where the electrodes are composed of multiple layers and the dielectric layer is composed of multiple thin layers, which helps to reduce the effect of charge leakage.

Overall, the DME1W1P2K is an excellent choice for multiple high power applications requiring low noise and high frequency stability. Its robust construction, low ESR, and wide temperature range make it ideal for harsh environments, while its charge-discharge characteristics and low inductance make it well suited for quick charging and discharging.

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