RKS1C221MCNAFEGS

The RKS1C221MCNAFEGS is a surface-mount conductive polymer aluminum solid electrolytic capacitor in Nichicon’s RKS series. It provides 220 µF of capacitance at a 16 V rating in a compact φ6.3 × 5.8 mm SMD can package designed for general-purpose electronic applications.

With low ESR, defined ripple current capability and a wide operating temperature range, this part targets designs that require compact bulk capacitance, robust temperature endurance and assembly-friendly packaging.

Key Features

• Capacitance & Voltage — 220 µF nominal capacitance with a 16 V rated voltage and ±20% tolerance for general-purpose energy storage and smoothing.
• Low Loss / Low ESR — ESR of 50 mΩ measured at 20°C and 100 kHz, and tanδ of 0.12 (20°C, 120 Hz) for improved high-frequency performance.
• Ripple Current Capability — Specified ripple current of 100 mA at 120 Hz (low frequency) and 1 A at 300 kHz (high frequency), supporting both low- and high-frequency ripple conditions.
• High Temperature Endurance — Rated operating temperature range from −55°C to 125°C and life specification of 3000 hours at 125°C.
• Leakage Current — Typical leakage current listed as 176 µA, measured after standard conditioning procedures.
• SMD Can Package — Radial can SMD construction with dimensions φ6.3 × 5.8 mm and available in embossed carrier taping with moisture-proof packing for automated assembly.
• Manufacturing & Compliance — Lead-free reflow compatibility to 260°C peak (series-level information) and RoHS-compliant construction; product is in mass production.

Typical Applications

• Power supply decoupling — Low ESR (50 mΩ @100 kHz) and strong ripple current capability make this capacitor suitable for decoupling and smoothing on 16 V power rails.
• DC–DC converter output filtering — 220 µF capacitance with high-frequency ripple rating supports bulk filtering on compact converter designs.
• Embedded and industrial electronics — Wide temperature range (−55°C to 125°C) and 3000 h life at 125°C provide endurance for demanding thermal environments.

Unique Advantages

• Compact bulk capacitance: 220 µF in a φ6.3 × 5.8 mm SMD can saves board space while delivering substantial energy storage.
• High-frequency performance: Low ESR and specified ripple current at 300 kHz enable better transient response and reduced heating in high-speed circuits.
• High-temperature reliability: 3000-hour life at 125°C supports long-term operation in elevated-temperature applications.
• Assembly-ready packaging: Embossed carrier taping and moisture-proof packing simplify pick-and-place and reflow processes for volume production.
• Regulatory compliance: RoHS-compliant construction aligns with modern manufacturing and environmental requirements.

Why Choose RKS1C221MCNAFEGS?

RKS1C221MCNAFEGS delivers a balanced combination of capacitance density, low ESR and thermal endurance in a small SMD can. It is positioned for engineers who need reliable bulk capacitance and efficient ripple handling on 16 V rails while maintaining a compact board footprint and production-ready packaging.

This capacitor is well suited for designers of power supplies, converters and embedded systems that require verifiable electrical characteristics (ESR, ripple current, leakage) and defined lifetime at elevated temperature. Specified performance and RoHS compliance provide predictable integration into long-term production programs.

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