RKS1E121MCNAHJGS

The RKS1E121MCNAHJGS is a surface-mount conductive polymer aluminum solid electrolytic capacitor in the Nichicon RKS series. It delivers 120 µF at 25 V in a compact φ8 × 10 mm SMD radial-can package, designed for power-filtering and decoupling roles in industrial and electronic systems.

Key value comes from low ESR and high allowable ripple current, combined with a wide operating temperature range (−55°C to +125°C) and a rated endurance of 3000 hours at 125°C, enabling reliable performance in thermally demanding designs.

Key Features

• Capacitance & Voltage: 120 µF rated at 25 V for bulk decoupling and local energy storage in power stages.
• Low ESR: 27 mΩ specified at 20°C / 100 kHz, supporting stable high-frequency performance and reduced power loss.
• High Ripple Current Capability: 160 mA at 120 Hz (low frequency) and 1.6 A at 300 kHz (high frequency) for demanding switching and regulator applications.
• Loss Tangent (tan δ): 0.12 measured at 20°C / 120 Hz, indicating controlled dissipation for reliable operation.
• Wide Temperature & Long Life: Operates from −55°C to +125°C with a rated lifetime of 3000 hours at 125°C for high-temperature endurance.
• Leakage Current: 150 µA specified, suitable for applications requiring predictable standby and leakage behavior.
• Package & Assembly: φ8 × 10 mm radial can SMD in embossed carrier taping with moisture-proof packing for automated placement and handling.
• Compliance & Production: RoHS compliant and listed as mass production status in the RKS series.

Typical Applications

• DC–DC Converter Output Filtering: Low ESR and high ripple-current capability help smooth switching regulator outputs and improve transient response.
• Point-of-Load Decoupling: Compact SMD can supports local energy storage for processor power rails and power-management ICs.
• Industrial Power Modules: Wide temperature range and 3000-hour endurance at 125°C make it suitable for power modules and control electronics in thermally stressed environments.
• Telecom and Networking Equipment: High-frequency stability and low loss tangent help maintain signal integrity and reliable filtering in communication power supplies.

Unique Advantages

• Low ESR for efficient high-frequency operation: 27 mΩ at 100 kHz reduces losses and heat generation in switching applications.
• High allowable ripple current: 1.6 A at 300 kHz and 160 mA at 120 Hz support heavy AC loading from modern converters and regulators.
• Robust thermal endurance: −55°C to +125°C rating with 3000 hours life at 125°C provides long-term stability in elevated-temperature environments.
• Predictable leakage and dissipation: 150 µA leakage and tan δ of 0.12 (20°C/120 Hz) enable reliable behavior in energy-sensitive designs.
• Surface-mount radial-can package: φ8 × 10 mm footprint in embossed carrier taping with moisture-proof packing simplifies automated assembly and inventory handling.
• RoHS compliant and production-ready: Series-level compliance and mass-production status support procurement and volume manufacturing needs.

Why Choose RKS1E121MCNAHJGS?

RKS1E121MCNAHJGS combines conductive-polymer aluminum solid-electrolytic construction with low ESR and high ripple-current capability to address demanding power-filtering tasks in compact surface-mount form. Its wide temperature range and 3000-hour endurance at 125°C make it a dependable choice for designs that require sustained performance under thermal stress.

This part is well suited for engineers specifying compact, high-performance capacitors for DC–DC converters, point-of-load decoupling, and industrial power electronics where predictable dissipation, low losses, and automated assembly readiness are priorities.

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