Mpp Sh Capacitor

4 min read Jun 26, 2024
Mpp Sh Capacitor

MPP SH Capacitor: A Reliable Solution for Power Systems


The MPP SH capacitor is a type of metallized polypropylene film capacitor that is widely used in power systems and electronic circuits. Its unique properties and characteristics make it an ideal choice for a wide range of applications. In this article, we will explore the features, benefits, and uses of MPP SH capacitors.

Construction and Properties

Metallized Polypropylene Film

MPP SH capacitors consist of a metallized polypropylene film dielectric, which provides a high level of reliability and stability. The polypropylene film is coated with a thin layer of metal, typically aluminum or zinc, on both sides. This metallization process allows for precise control over the capacitance value and ensures a low equivalent series resistance (ESR).

Self-Healing Property

The "SH" in MPP SH capacitor stands for "self-healing." This refers to the capacitor's ability to recover from damage caused by voltage stress or other external factors. When a voltage spike or surge occurs, the metallized layer can be damaged, causing a short circuit. However, the polypropylene film has a self-healing property that allows it to reform and restore its insulation, thereby preventing a complete failure of the capacitor.

Benefits and Advantages

High Reliability

MPP SH capacitors are known for their high reliability and long lifespan. They can withstand harsh operating conditions, including high temperatures, humidity, and vibration.


The metallized polypropylene film dielectric provides a very low ESR, which reduces energy loss and heat generation.

High Capacitance Density

MPP SH capacitors offer high capacitance density, making them ideal for compact and efficient designs.

Wide Operating Temperature Range

These capacitors can operate over a wide temperature range, from -55°C to +125°C, making them suitable for a variety of applications.


Power Supplies

MPP SH capacitors are widely used in power supplies, including switching power supplies, DC-DC converters, and AC-DC converters.

Filtering and Decoupling

They are also used in filtering and decoupling applications, such as EMI filtering, signal filtering, and decoupling in audio and video equipment.

Motor Control and Drives

MPP SH capacitors are used in motor control and drive applications, including motor starters, servo drives, and AC drives.

Renewable Energy Systems

They are used in renewable energy systems, such as solar and wind power systems, to improve efficiency and reliability.


MPP SH capacitors offer a reliable and efficient solution for a wide range of power system and electronic circuit applications. Their unique properties, including self-healing, high reliability, and low ESR, make them an ideal choice for designers and engineers. With their wide operating temperature range and high capacitance density, MPP SH capacitors are an excellent choice for modern electronic systems.

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