RKS1D221MCNAJJGS

The RKS1D221MCNAJJGS is a surface-mount conductive polymer aluminum solid electrolytic capacitor in Nichicon’s RKS series. It delivers 220 µF capacitance at a 20 V rating with low ESR and high allowable ripple current, packaged in a compact φ10 × 10 mm SMD can for space-constrained power designs. The device targets general-purpose power smoothing and decoupling applications where low loss, high ripple capability and extended high-temperature endurance are required.

Key Features

• Capacitance & Voltage — 220 µF nominal capacitance with a rated voltage of 20 V and a tolerance of -20% to +20%.
• Conductive Polymer Electrolyte — Solid conductive polymer construction for stable performance and low dissipation (tanδ 0.12 at 20°C, 120 Hz).
• Low ESR & High Ripple Handling — ESR of 20 mΩ measured at 100 kHz and high frequency ripple capability of up to 2.0 A (300 kHz); low-frequency ripple current rated at 200 mA (120 Hz).
• Leakage Current — Specified leakage current of 220 µA for predictable quiescent behavior in power rails.
• High Temperature Endurance — Rated for operation from -55°C to +125°C with a load life of 3000 hours at 125°C.
• SMD Radial Can Package — φ10 × 10 mm radial, can-style SMD package designed for automated placement; supplied in embossed carrier tape with moisture-proof packing for production lines.
• Reflow Compatibility — Compatible with lead-free reflow soldering peak temperatures up to 260°C per series soldering conditions.
• Regulatory — RKS series declared compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Power supply decoupling — Low ESR and high ripple current make this capacitor suitable for smoothing and decoupling on compact DC power rails and supply modules.
• DC-DC converters — Compact SMD can and high-frequency ripple capability support use on input/output filter networks in switching regulators.
• Embedded and industrial electronics — Wide temperature range (−55°C to +125°C) and 3000-hour high-temperature endurance support reliable operation in space- and thermally-constrained assemblies.

Unique Advantages

• High ripple tolerance: 2.0 A high-frequency ripple rating and 20 mΩ ESR deliver effective filtering in high-switching environments.
• Thermal robustness: Specified life of 3000 hours at 125°C enables long-term stability in elevated-temperature applications.
• Compact SMD form factor: φ10 × 10 mm radial can enables high-density board layouts while remaining compatible with automated pick-and-place and tape-and-reel supply.
• Predictable electrical behavior: Specified tanδ, leakage current, and ESR values support reliable design margining and simulation-driven selection.
• Production-ready packaging: Embossed carrier taping with moisture-proof packing simplifies inventory handling and assembly line integration.

Why Choose RKS1D221MCNAJJGS?

RKS1D221MCNAJJGS offers a balance of high capacitance, low ESR and robust ripple handling in a compact SMD can, making it well suited to designers who need dependable power filtering in space-constrained modules. Its conductive polymer construction, wide operating temperature range (−55°C to +125°C) and 3000-hour endurance at 125°C provide stability and longevity for industrial and embedded power systems.

This part is a practical choice for engineers seeking predictable electrical performance, straightforward assembly compatibility with lead‑free reflow processes, and production-oriented packaging for automated manufacturing.

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