MPXB105K305G

MPXB105K305G is a film capacitor that is mostly used by commercial and industrial applications, including power supplies and instrumentation. The MPXB105K305G is comprised of two different films that are connected in parallel with their dielectric strength providing a high insulation resistance that increases the voltage capabilities. The combination of these two films also offers a high stability and reliability.

Application Field of MPXB105K305G

The MPXB105K305G is an ideal choice for most electronic power supply applications. Its high voltage performance makes it suitable for AC line-filter, motor controls, and other similar power-signal conditioning circuits with operation voltage up to 1100V. It is also routinely used as a protective device for high frequency switching mode power supplies, LED drivers and display power systems. Moreover, these capacitors have higher temperatures and lower resistance compared to conventional ceramic capacitors.

Working Principle of MPXB105K305G

The MPXB105K305G is a polarized, non-electrolytic capacitor that consists two different films, namely the metallic film and the dielectric one. Metallized film is made of a combination of material such as plastic-metal, paper-oil, or plastic-oil. The dielectric film is a ceramics like Polypropylene (PP), Polyactylene (PA) or Metallized Aluminum Foil. When connected in parallel these two films act as an insulating layer, allowing electrons to pass between them, creating the capacitor effect. The metallic film stores most of the electric charge while the dielectric film produces the desired electrical insulation and supports the voltage rating of the capacitor. By using the combination of these two different materials, MPXB105K305G film capacitors are capable of operating at up to 1100V and temperatures up to 125C.