MPX475K305H

Introduction to Film Capacitors:

Film capacitors are widespread in a variety of applications including consumer electronics, commercial, industrial and military applications, due to their superior electrical characteristics and superior mechanical stability. The dielectric medium in a film capacitor is typically a polyester, polyethylene naphthalate, polypropylene, polycarbide, polyphenylene sulfide or polyethylene terephthalate film. The film capacitor also features a variety of other features such as high humidity resistance, high insulation resistance, excellent low temperature characteristics and high dV/dt performance.

MPX475K305H Application Field and Working Principle:

The MPX475K305H metallized polypropylene film capacitor is specifically designed for critical industrial and military applications where high performance and reliability are key requirements. The MPX475K305H is a PVF2 construction, providing a wide range of temperature performance and improved leakage current performance. It is AEC-Q200 certified, making it ideal for applications such as motors, power converters, automotive electronics and military electronic systems.

The MPX475K305H metallized polypropylene film capacitor is a three-element capacitor. It consists of three parts: a metal electrode, a ceramic dielectric medium and a semiconductor, either doped single layer or multiple layer. The two electrodes are connected through a contact point. The metal on the capacitor is “blown” onto the dielectric medium to create the contact points. The alternate layers of metal and dielectric medium provide the capacitance value in the capacitor. When an AC voltage is applied to the capacitor, the alternating layers of dielectric medium and metal charges and discharges, causing an ionic current flow between the two electrodes.

The MPX475K305H has a wide operating temperature range from -55C to +125C, making it suitable for a wide range of operating conditions. The MPX475K305H is also available in both surface mount and through-hole versions, making it suitable for a variety of applications. The device also has excellent AC and DC characteristics and is designed to provide a high insulation resistance and high current capability.

Conclusion:

The MPX475K305H metallized polypropylene film capacitor is an ideal choice for critical industrial and military applications requiring high performance and reliability. The device offers a wide temperature operating range, excellent AC and DC characteristics and high insulation resistance. It is AEC-Q200 certified, making it suitable for a wide range of applications.