RKS1E121MCNAJJGS

The RKS1E121MCNAJJGS is a surface-mount conductive polymer aluminum electrolytic capacitor from Nichicon's RKS series. It provides 120 µF capacitance at a 25 V rating in a compact φ10 × 10 mm SMD radial can package, optimized for applications that require low ESR and high ripple current capability.

Designed for general-purpose electronic systems, this part delivers long-term reliability with a rated lifetime of 3000 hours at 125°C and RoHS-compliant construction, making it suitable for assemblies that must tolerate elevated temperatures and sustained ripple stress.

Key Features

• Dielectric / Construction Conductive polymer aluminum solid electrolytic design for reliable capacitance and stable performance over temperature.
• Capacitance & Tolerance 120 µF with tolerance of -20% to +20% (±20% at 20°C, 120 Hz).
• Rated Voltage 25 V rating suitable for a wide range of low-voltage power electronics.
• Low Loss (tan δ) tanδ of 0.12 measured at 20°C, 120 Hz for predictable AC performance.
• Low ESR Equivalent series resistance of 20 mΩ at 20°C, 100 kHz, supporting high-frequency decoupling and low dissipation.
• High Ripple Current Capability Low-frequency ripple current 200 mA (120 Hz) and high-frequency ripple current 2000 mA (300 kHz) for demanding power decoupling tasks.
• Leakage Current Leakage current specified at 150 µA.
• High Temperature Endurance Rated load life of 3000 hours at 125°C for sustained operation in high-temperature environments.
• Package & Mounting Surface-mount radial can package (φ10 × 10 mm) with embossed carrier taping and moisture-proof packing for automated assembly.
• Compliance & Production RoHS compliant and in mass production.

Typical Applications

• Power Supply Filtering Use for bulk decoupling and smoothing in DC–DC converters and regulated power rails where low ESR and high ripple capability reduce voltage ripple.
• High-Frequency Decoupling Suited for high-frequency bypassing near switching components thanks to 20 mΩ ESR at 100 kHz and 2 A high-frequency ripple rating.
• Industrial Electronics Fits general-purpose control and power electronics that require long endurance at elevated temperatures (3000 h at 125°C).
• Embedded Systems Ideal for compact SMD assemblies needing reliable capacitance in a small radial can package with moisture-proof tape packing for pick-and-place lines.

Unique Advantages

• High Ripple Tolerance: 2000 mA high-frequency ripple capability combined with low ESR (20 mΩ) reduces thermal stress and improves voltage stability under dynamic loads.
• Extended High-Temperature Life: 3000-hour endurance at 125°C supports long-term reliability in thermally demanding applications.
• Compact SMD Can Form Factor: φ10 × 10 mm radial SMD package provides high capacitance in a space-efficient footprint for automated assembly.
• predictable AC Performance: tanδ specified at 0.12 (20°C, 120 Hz) aids design for low-loss AC behavior and predictable heating.
• Production-Ready Packaging: Embossed carrier taping with moisture-proof packing simplifies pick-and-place processing and storage handling.
• Regulatory Compliance: RoHS-compliant construction supports use in regulated product lines.

Why Choose RKS1E121MCNAJJGS?

RKS1E121MCNAJJGS balances high capacitance and low ESR in a compact SMD radial can, delivering stable performance across a wide temperature range (−55°C to 125°C). Its conductive polymer aluminum construction, defined tanδ, and high ripple-current ratings make it well suited for power supply filtering, high-frequency decoupling, and other general-purpose electronic designs that require durability under continuous thermal and electrical stress.

This part is targeted at design and procurement teams building compact, automated assemblies where predictable electrical performance, long high-temperature life, and production-friendly packaging reduce integration risk and simplify manufacturing.

Request a quote or submit specifications to receive pricing and availability details for RKS1E121MCNAJJGS. Our team can provide lead-time and packaging information to support your BOM and production planning.