RKS1D221MCNAHGGS

The RKS1D221MCNAHGGS is a surface-mount conductive polymer aluminum 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 for high-frequency power applications.

Designed for board-level power decoupling and smoothing where elevated temperature endurance and compact SMD packaging are required, this part targets applications that demand stable performance up to 125°C and long operational life.

Key Features

• Capacitance & Voltage — 220 µF nominal capacitance with a rated voltage of 20 V and tolerance of −20% to +20% for predictable energy storage.
• Conductive Polymer Construction — Polymer aluminum solid electrolyte provides low loss characteristics (tan δ 0.12 at 120 Hz, 20°C) and supports high-frequency operation.
• Low ESR & High Ripple Capability — ESR of 30 mΩ (measured at 100 kHz, 20°C) with specified ripple currents of 160 mA at 120 Hz and 1.6 A at 300 kHz for demanding ripple environments.
• High Temperature Endurance — Rated operating temperature range from −55°C to +125°C and a load life of 3000 hours at 125°C for extended reliability in elevated-temperature systems.
• Surface-Mount Can Package — Compact φ8 × 7.7 mm SMD can (radial can - SMD) with a recommended land pattern of 8.3 × 8.3 mm to support automated assembly and reflow processes.
• Leakage & Reliability — Specified leakage current of 220 µA and endurance/shelf-life performance tested per Nichicon datasheet conditions for robust long-term behavior.
• RoHS Compliant & Production Ready — RoHS-compliant construction and available in embossed carrier taping with moisture-proof packing; status: mass production.

Typical Applications

• High-frequency power rails — Low ESR and specified high-frequency ripple current make this capacitor suitable for decoupling and filtering on fast switching power rails.
• Switching power supplies and converters — Provides bulk decoupling and ripple attenuation for DC–DC converters and switching stages operating at high switching frequencies.
• Elevated-temperature electronics — With a −55°C to +125°C range and 3000 h life at 125°C, ideal for systems that must tolerate sustained high operating temperatures.

Unique Advantages

• Stable high-frequency performance: Low tan δ (0.12 at 120 Hz) combined with 30 mΩ ESR at 100 kHz supports efficient filtering and decoupling at high frequencies.
• High allowable ripple current: Rated ripple currents (160 mA @120 Hz, 1.6 A @300 kHz) reduce thermal stress and improve reliability in ripple-heavy circuits.
• Long-life at elevated temperature: 3000 hours endurance at 125°C enables reliable operation in thermally demanding environments.
• SMD-friendly packaging: Compact φ8 × 7.7 mm can in embossed carrier taping and moisture-proof packing simplifies automated placement and reflow assembly.
• Predictable leakage behavior: Specified leakage current and datasheet conditioning/test methods provide clear criteria for design and qualification.
• Regulatory readiness: RoHS compliance supports use in regulated assemblies without additional material qualification.

Why Choose RKS1D221MCNAHGGS?

The RKS1D221MCNAHGGS combines conductive polymer aluminum construction with a compact SMD can to deliver low ESR, high ripple capability, and long-term endurance up to 125°C. Its measured electrical characteristics—220 µF at 20 V, 30 mΩ ESR at 100 kHz, and specified ripple currents—translate directly into improved stability and thermal performance on high-frequency power rails and switching stages.

This part is suited for engineers specifying robust, high-temperature-capable decoupling and bulk energy-storage components for demanding board-level power designs. Backed by Nichicon’s datasheet-tested endurance and RoHS compliance, it provides a verifiable choice for production designs that prioritize reliability and predictable electrical behavior.

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