RKS1C181MCNAFEGS

The RKS1C181MCNAFEGS is a surface-mount conductive polymer aluminum electrolytic capacitor offering 180 µF capacitance at 16 V in a compact φ6.3 × 5.8 mm SMD can. It pairs low ESR and high allowable ripple current with a wide operating temperature range, making it suited for general-purpose power filtering and decoupling in compact electronic designs.

Designed for high-frequency performance and long-term stability, this Nichicon RKS-series part delivers a balance of capacitance density, reliability and reflow-compatible packaging for automated assembly environments.

Key Features

• Conductive polymer construction — Solid polymer electrolyte for stable performance and lower ESR compared to traditional electrolytics.
• Capacitance and voltage — 180 µF nominal capacitance with a rated voltage of 16 V and tolerance of -20% to +20%.
• Low loss and frequency performance — tanδ = 0.12 (measured at 20°C, 120 Hz) and ESR = 50 mΩ (at 20°C, 100 kHz) for improved high-frequency decoupling.
• High ripple capability — Low-frequency ripple current 100 mA (120 Hz) and high-frequency ripple capability 1 A (300 kHz) to support switching power stages.
• Robust endurance and temperature range — Rated for operation from -55°C to +125°C with a rated life of 3000 hours at 125°C.
• Leakage current — Specified leakage current of 144 µA for predictable standby behavior.
• SMD package and assembly — Radial can SMD (φ6.3 × 5.8 mm) supplied on embossed carrier tape with moisture-proof packing; compatible with lead-free reflow soldering (peak 260°C per series datasheet).
• Regulatory — Compliant to the RoHS directive as indicated in series documentation.

Typical Applications

• Power supplies and converters — Bulk filtering and output smoothing where 16 V rating and 180 µF capacitance reduce voltage ripple and improve regulator stability.
• High-frequency DC‑DC stages — Low ESR and 1 A high-frequency ripple capability support switching converters and point-of-load decoupling.
• Industrial and embedded systems — Wide -55°C to +125°C operating range and 3000 h endurance at 125°C for reliable operation in thermally demanding environments.

Unique Advantages

• Compact high capacitance — 180 µF in a φ6.3 × 5.8 mm SMD can saves board space while maintaining required charge storage.
• Low ESR for efficient performance — 50 mΩ ESR at 100 kHz reduces power loss and thermal stress in high-frequency applications.
• High-frequency ripple handling — 1 A ripple capability at 300 kHz supports robust decoupling of switching nodes.
• Long-term thermal endurance — 3000 hours at 125°C gives designers predictable lifetime behavior under elevated temperature conditions.
• Assembly-ready packaging — Embossed carrier taping and moisture-proof packing simplify automated pick-and-place and board-level processing.
• Predictable electrical characteristics — Specified tanδ and leakage current enable reliable simulation and margining in power designs.

Why Choose RKS1C181MCNAFEGS?

RKS1C181MCNAFEGS is positioned for designers who need a compact, high-capacitance SMD solution with low ESR and robust high-frequency ripple capability. Its combination of 180 µF at 16 V, measured ESR and ripple ratings, and proven polymer electrolyte architecture make it a practical choice for power filtering and decoupling in constrained board spaces.

Backed by Nichicon’s series-level specifications—including reflow compatibility, RoHS compliance and a 3000-hour life rating at 125°C—this part delivers long-term stability and predictable behavior for a wide range of general-purpose power electronics designs.

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