RKS1C221MCNAFGGS

The RKS1C221MCNAFGGS is a surface-mount conductive polymer aluminum electrolytic capacitor from Nichicon’s RKS series, rated at 220 µF and 16 V. It combines high capacitance in a compact φ6.3 × 7.7 mm package with low ESR and high allowable ripple current for general-purpose power decoupling and energy buffering in electronic designs.

Designed for elevated operating temperatures and extended life, this part provides a 3000 hour load life at 125°C, RoHS compliance, and embossed carrier taping with moisture-proof packing for production-ready assembly.

Key Features

• Capacitance & Voltage — 220 µF capacitance with a rated voltage of 16 V and capacitance tolerance of −20% to +20% (120 Hz, 20°C).
• Conductive Polymer Electrolyte — Solid conductive polymer construction offering stable performance and low loss (tan δ = 0.12 at 20°C, 120 Hz).
• Low ESR — ESR of 30 mΩ measured at 20°C / 100 kHz for improved high-frequency performance and reduced power loss.
• High Ripple Current Capability — Low-frequency ripple current 150 mA (120 Hz) and high-frequency ripple current 1.5 A (300 kHz) for demanding decoupling and filtering tasks.
• Extended Thermal Endurance — Rated operating temperature range −55°C to +125°C with a specified load life of 3000 hours at 125°C.
• Leakage and Reliability — Specified leakage current of 176 µA; endurance and damp-heat performance follow the RKS series test conditions.
• SMD Can Package — Radial, can-style SMD package (φ6.3 × 7.7 mm) suitable for automated placement; supplied in embossed carrier taping with moisture-proof packing.
• Reflow Compatible — Lead-free reflow soldering compatibility with peak profile correspondence up to 260°C as specified for the series.
• Regulatory Compliance — RoHS compliant.

Typical Applications

• Power Supply Decoupling — Local decoupling and smoothing for DC-DC converters and voltage regulators where low ESR and high ripple capability reduce output noise and heat.
• Embedded and Industrial Electronics — Bulk capacitance and transient buffering in embedded controllers, industrial control modules, and communication equipment operating across −55°C to +125°C.
• High-Frequency Filtering — High-frequency ripple handling (1.5 A at 300 kHz) for input/output filtering on power stages and intermediate buses.

Unique Advantages

• Compact high-capacitance solution — 220 µF in a φ6.3 × 7.7 mm SMD can reduces board area while delivering required bulk capacitance.
• Improved thermal robustness — 3000 hour life at 125°C supports designs that must maintain performance in elevated-temperature environments.
• Low ESR for improved efficiency — 30 mΩ ESR at 100 kHz lowers conduction losses and supports stable voltage regulation under dynamic loads.
• High ripple tolerance — Specified ripple currents at both low and high frequencies enable use in switching power stages and high-speed converters.
• Production-ready packaging — Embossed carrier taping and moisture-proof packing simplify automated assembly and handling.
• Lead-free reflow compatibility — Meets lead-free reflow peak profile correspondence to 260°C, aligning with modern assembly processes.

Why Choose RKS1C221MCNAFGGS?

RKS1C221MCNAFGGS is positioned for designs that require substantial bulk capacitance in a small SMD footprint while maintaining low ESR, strong ripple-handling capability, and long-term thermal endurance. Its conductive polymer construction and 3000 hour life at 125°C make it suitable for robust general-purpose power applications across industrial and embedded markets.

This Nichicon RKS part provides a balance of performance and reliability for engineers needing compact energy storage and filtering with production-ready packaging and RoHS compliance.

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