The WKP472MCPEFOKR is a polypropylene film capacitor manufactured by Vishay. Part of the WKP series, these capacitors are known for their reliability and suitability for applications requiring stability and high voltage capability. These are often used in demanding electronic circuits.

Applications

• Snubber Circuits: Commonly employed in power supplies, inverters, and motor drives to mitigate voltage spikes and protect sensitive switching components.
• High-Frequency Inverters: Well-suited for high-frequency inverter applications, owing to their low Equivalent Series Resistance (ESR) and Equivalent Series Inductance (ESL).
• Power Factor Correction (PFC): Used in PFC circuits to enhance the power factor in various electronic devices and systems.
• Resonant Circuits: Often utilized in resonant circuits for applications like induction heating and wireless power transfer.
• Lighting Ballasts: Incorporated into electronic ballasts for fluorescent and LED lighting systems.

Features

• Polypropylene Film Dielectric: Ensures outstanding stability, minimal dissipation factor (tan δ), and high insulation resistance.
• Self-Healing Properties: Allows the capacitor to recover from minor insulation breakdowns, thus extending its operational lifespan.
• High Voltage Rating: Designed to withstand high DC and AC voltages, making it appropriate for high-power applications.
• Low ESR and ESL: Reduces losses and enhances performance in high-frequency circuits.
• Flame-Retardant Epoxy Resin Coating: Enhances safety and protects the capacitor from environmental elements.

Benefits

• Improved Reliability: Self-healing capabilities and a robust design ensure long-term reliability and consistent performance.
• Enhanced Efficiency: Low ESR and ESL lead to greater efficiency in power electronic circuits.
• Increased Safety: The flame-retardant coating boosts safety and reduces the risk of fire.
• Reduced Harmonic Distortion: Efficient power factor correction diminishes harmonic distortion in AC power systems.
• Stable Operation: The polypropylene film dielectric offers consistent capacitance and low losses across a wide spectrum of temperatures and frequencies.

Additional Details

The WKP472MCPEFOKR features a capacitance of 4700 pF (picofarads) or 4.7 nF, typically with a tolerance of ±10%. The voltage rating usually is around 630VDC. Its operating temperature range usually extends from -40°C to +105°C. This capacitor is made of metallized polypropylene film enclosed in a flame-retardant epoxy resin. Usually a leaded (through-hole) component. Specific details regarding lead spacing and dimensions can be found in Vishay's datasheet. These capacitors excel in applications that necessitate high voltage endurance, high stability, and minimal losses.