RKS1E220MCNAFEGS

The RKS1E220MCNAFEGS from Nichicon is a surface-mount conductive polymer aluminum solid electrolytic capacitor in the RKS series. It delivers 22 µF capacitance at a 25 V rating with low ESR and high allowable ripple current, engineered for compact power delivery and filtering roles.

With a wide operating temperature range of −55°C to +125°C and a rated endurance of 3000 hours at 125°C, this part addresses designs that require long-term thermal reliability and stable high-frequency performance.

Key Features

• Dielectric & Construction Conductive polymer aluminum solid electrolytic construction for stable capacitance and low equivalent series resistance.
• Capacitance & Tolerance 22 µF nominal with tolerance ±20% (−20% to +20%) at 120 Hz, 20°C.
• Rated Voltage 25 V DC rating suitable for common low-voltage power rails.
• Low Loss (tan δ) tanδ = 0.12 measured at 20°C, 120 Hz for controlled dissipation in AC conditions.
• Low ESR ESR = 50 mΩ at 20°C, 100 kHz, supporting efficient high-frequency operation.
• High Ripple Current Capability 90 mA at 120 Hz (low frequency) and 900 mA at 300 kHz (high frequency) for demanding decoupling and filtering tasks.
• Leakage Current Specified leakage current up to 100 µA after standard conditioning.
• High-Temperature Endurance Rated for 3000 hours at 125°C under rated voltage for long-term stability in hot environments.
• Compact SMD Package Radial can SMD package, size φ6.3 × 5.8 mm, supplied in embossed carrier taping with moisture-proof packing for automated assembly.
• RoHS Compliant Conforms to RoHS directive as specified in the product data.

Typical Applications

• High-frequency power filtering — Low ESR (50 mΩ at 100 kHz) and 900 mA ripple capability at 300 kHz make this capacitor suitable for high-frequency noise suppression and smoothing.
• DC–DC converter output decoupling — 22 µF capacitance with high ripple endurance provides stable output decoupling on compact power rails.
• Industrial and embedded power modules — Wide operating range (−55°C to +125°C) and 3000-hour endurance at 125°C support reliable operation in thermally demanding environments.
• Space-constrained designs — φ6.3 × 5.8 mm SMD package and embossed carrier taping enable automated placement in compact board layouts.

Unique Advantages

• High-frequency performance: Low ESR and specified ripple current at high frequency translate to effective suppression of switching noise and improved power integrity.
• Thermal durability: 3000-hour rated life at 125°C under rated voltage provides predictable aging for long-term deployment in hot environments.
• Compact form factor: Small radial-can SMD footprint (φ6.3 × 5.8 mm) reduces board area while maintaining necessary capacitance and current handling.
• Assembly-ready packaging: Embossed carrier taping and moisture-proof packing facilitate surface-mount assembly and storage handling.
• Measurable leakage control: Leakage current specified at 100 µA supports predictable bias behavior in power circuits.

Why Choose RKS1E220MCNAFEGS?

The RKS1E220MCNAFEGS combines conductive polymer aluminum technology with a compact SMD radial-can package to deliver low ESR, high ripple capability, and long-term thermal endurance. It is positioned for engineers designing compact power systems and high-frequency filtering stages where stable performance from −55°C to +125°C and predictable end-of-life behavior are important.

This part is suitable for designs that require a balance of capacitance, low loss, and thermal reliability, and it is supplied in assembly-friendly packaging to support volume production and automated placement.

Request a quote or submit an inquiry for pricing and availability to evaluate RKS1E220MCNAFEGS for your next power or filtering design.