RKS1C221MCNAJJGS

The RKS1C221MCNAJJGS is a surface-mount conductive polymer aluminum solid electrolytic capacitor in Nichicon’s RKS series. It delivers 220 µF at a 16 V rating with a low ESR and high allowable ripple current for general-purpose power decoupling and bulk energy storage on SMD power rails.

Designed for demanding thermal and frequency environments, this part supports operation from −55 °C to 125 °C, a rated lifetime of 3000 hours at 125 °C, and packaging optimized for automated assembly.

Key Features

• Capacitance & Voltage — 220 µF nominal capacitance with a rated voltage of 16 V and tolerance of −20% to +20%.
• Low Loss & ESR — tan δ = 0.12 (measured at 20 °C, 120 Hz) and ESR of 20 mΩ at 20 °C / 100 kHz, supporting low-loss performance at high frequency.
• High Ripple Current Capability — Low-frequency ripple current of 210 mA (120 Hz) and high-frequency ripple current of 2.1 A (300 kHz) for improved handling of switching transients.
• Leakage Current — Specified leakage current of 176 µA, measured per product test conditions.
• Wide Temperature & Long Life — Operating temperature range −55 °C to 125 °C with an endurance rating of 3000 hours at 125 °C.
• SMD Radial Can Package — Compact φ10 × 10 mm (1.0 × 1.0 cm) radial, can-style SMD package suitable for automated placement.
• Assembly & Handling — Compatible with lead-free reflow soldering (260 °C peak, per series soldering conditions) and supplied in embossed carrier taping with moisture-proof packing for assembly readiness.
• Regulatory — RoHS compliant.

Typical Applications

• General-purpose power decoupling — Bulk and local decoupling on power rails that require 220 µF at 16 V with low ESR to improve transient response.
• Switching regulator output filtering — High-frequency ripple current capability (2.1 A at 300 kHz) makes it suitable for smoothing outputs of DC–DC converters.
• Embedded and industrial electronics — Wide −55 °C to 125 °C operating range and 3000-hour endurance at 125 °C support use in thermally demanding designs.

Unique Advantages

• Low ESR for improved efficiency: 20 mΩ at 100 kHz reduces losses and thermal rise in high-frequency circuits.
• High ripple tolerance: 2.1 A high-frequency ripple current rating supports aggressive switching applications without compromising reliability.
• Extended high-temperature life: 3000 hours at 125 °C provides long-term stability for designs exposed to elevated temperatures.
• Compact, assembly-ready package: φ10 × 10 mm radial SMD can in embossed carrier taping and moisture-proof packing for streamlined production.
• Lead‑free reflow compatible: Designed to withstand peak reflow conditions up to 260 °C per the series soldering profile for modern SMT processes.
• Standards-minded manufacturing: RoHS compliance aligns the component with common environmental requirements.

Why Choose RKS1C221MCNAJJGS?

RKS1C221MCNAJJGS positions itself as a robust, general-purpose SMD capacitance solution where a combination of high capacitance, low ESR, and strong ripple-handling is required. Its conductive polymer aluminum construction and verified endurance at 125 °C make it appropriate for power supply decoupling and filtering in thermally demanding assemblies.

This part is suited to engineers and procurement teams seeking a compact, production-ready capacitor with verifiable electrical characteristics (220 µF, 16 V, 20 mΩ ESR, 2.1 A HF ripple) and industry-standard packaging for automated SMT lines.

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