The WKP221MCPERUKR is a polypropylene film capacitor manufactured by Vishay. As part of the WKP series, it's designed for applications that require high stability, high voltage withstanding, and reliable performance under demanding conditions.

Applications

• Snubber circuits: Commonly used in power electronics to suppress voltage spikes and protect semiconductor devices like IGBTs and MOSFETs.
• High-frequency inverters: Suitable for high-frequency inverter applications due to their low ESR (Equivalent Series Resistance) and ESL (Equivalent Series Inductance).
• Power factor correction (PFC): Employed in PFC circuits to improve the power factor in various electronic devices and systems.
• Resonant circuits: Ideal for resonant circuits in applications like induction heating and wireless power transfer.
• Lighting ballasts: Used in electronic ballasts for fluorescent and LED lighting systems.

Features

• Polypropylene film dielectric: Provides excellent stability, low dissipation factor (tan δ), and high insulation resistance.
• Self-healing properties: Allows the capacitor to recover from minor insulation breakdowns, extending its operational life.
• High voltage rating: Designed to withstand high DC and AC voltages, making it suitable for high-power applications.
• Low ESR and ESL: Minimizes losses and improves performance in high-frequency circuits.
• Flame-retardant epoxy resin coating: Provides enhanced safety and protects the capacitor from environmental influences.

Benefits

• Enhanced reliability: Self-healing properties and robust construction ensure long-term reliability and stable performance.
• Improved efficiency: Low ESR and ESL contribute to higher efficiency in power electronic circuits.
• Increased safety: Flame-retardant coating enhances safety and prevents fire hazards.
• Reduced harmonic distortion: Effective power factor correction reduces harmonic distortion in AC power systems.
• Stable operation: Polypropylene film dielectric offers stable capacitance and low losses over a wide range of temperatures and frequencies.

Additional Details

The WKP221MCPERUKR has a nominal capacitance of 220 pF (picofarads), or 0.22 nF, with a tolerance typically around ±10%. The voltage rating is generally quite high, around 2000VDC. The operating temperature range typically spans from -40°C to +105°C. It's constructed with metallized polypropylene film encapsulated in a flame-retardant epoxy resin. It is often a leaded (through-hole) component. The lead spacing and specific dimensions are provided in the datasheet by Vishay. These capacitors are specifically designed for applications that demand a combination of high voltage capability, high stability, and low losses.