RKS1E221MCNAHHGS

The RKS1E221MCNAHHGS is a surface-mount conductive polymer aluminum electrolytic capacitor in Nichicon’s RKS series. It delivers 220 µF at 25 V in a compact φ8 × 8.7 mm SMD can package and is designed for applications that require low ESR and substantial ripple-handling in elevated-temperature environments.

Key design highlights include low equivalent series resistance (30 mΩ at 100 kHz), high-frequency ripple capability (1.6 A at 300 kHz), and long-term endurance (3000 hours at 125°C), making it suitable where tight electrical stability and thermal robustness are required on modern PCBs.

Key Features

• Capacitance & Voltage — 220 µF rated capacitance at 25 V with tolerance −20% to +20% (measured at 20°C, 120 Hz).
• Low ESR — 30 mΩ equivalent series resistance specified at 20°C / 100 kHz for improved high-frequency performance.
• High Ripple Current — 160 mA at 120 Hz (low frequency) and 1.6 A at 300 kHz (high frequency) to support demanding AC ripple conditions.
• Thermal Endurance — Rated for operation from −55°C to +125°C with a load life of 3000 hours at 125°C.
• Loss Tangent — tan δ = 0.12 (measured at 20°C, 120 Hz) indicating controlled dielectric losses.
• Leakage Current — 275 µA typical leakage current after voltage application.
• SMD Can Package — φ8 × 8.7 mm package, designed for surface-mount assembly with recommended land size L: 8.3 × W: 8.3 mm and supplied in embossed carrier tape with moisture-proof packing.
• Assembly Compatibility — SMD type rated for lead-free reflow soldering (peak 260°C) per series specifications.
• Regulatory — Series-level datasheet indicates compliance with RoHS requirements.

Typical Applications

• High-frequency decoupling — Low ESR and 100 kHz characterization make this part suitable for decoupling and filtering near switching nodes in high-frequency converter designs.
• Bulk smoothing for power circuits — 220 µF capacitance and high ripple capability provide bulk energy storage and smoothing in compact power modules
• High-temperature electronics — Specified operation to 125°C and 3000-hour load life at 125°C for boards exposed to sustained elevated temperatures.

Unique Advantages

• Measurable low-loss performance — 30 mΩ ESR at 100 kHz and tan δ = 0.12 at 120 Hz reduce voltage ripple and heat generation under AC stress.
• High ripple endurance — 1.6 A high-frequency ripple rating supports demanding switching environments and helps maintain capacitor stability under dynamic loads.
• Extended high-temperature life — 3000 hours endurance at 125°C gives predictable long-term behavior in hot operating conditions.
• SMD convenience for automated assembly — Embossed carrier tape packaging and reflow compatibility simplify placement and soldering in volume production.
• Compact, board-friendly footprint — φ8 × 8.7 mm can package with a defined land pattern enables space-efficient designs without sacrificing capacitance.

Why Choose RKS1E221MCNAHHGS?

RKS1E221MCNAHHGS combines a high 220 µF capacitance with low ESR and strong ripple-handling in a compact SMD can, providing a practical balance of energy storage and high-frequency performance. Its rated temperature range to 125°C and 3000-hour load life make it a reliable choice for designs that face sustained thermal stress.

Engineers specifying this part benefit from Nichicon’s RKS-series characteristics—measurable electrical performance, soldering compatibility for modern assembly, and packaging optimized for automated handling—helping reduce design iteration and support robust, compact power-stage implementations.

If you would like pricing or availability, request a quote or submit a pricing inquiry to Nichicon or your preferred authorized supplier for RKS1E221MCNAHHGS. Provide part number and required quantity to get a prompt response.