RKS1H120MCNAFEGS

The RKS1H120MCNAFEGS from Nichicon is a surface-mount conductive polymer aluminum solid electrolytic capacitor in the RKS series. It provides 12 µF capacitance at a 50 V rating with a wide operating temperature range and a long endurance specification for high-temperature environments.

Designed for high-frequency and high-ripple applications, this SMD capacitor combines low ESR and robust ripple-handling with lead‑free reflow compatibility and RoHS compliance, making it suitable for demanding power filtering and decoupling roles in compact assemblies.

Key Features

• Capacitance & Voltage — 12 µF nominal capacitance with a rated voltage of 50 V and a capacitance tolerance of -20% to +20% (measured at 120 Hz, 20°C).
• Low Loss / High Frequency Performance — Tangent of loss angle (tanδ) of 0.12 measured at 20°C, 120 Hz; designed for high-frequency performance and high allowable ripple current.
• Low ESR — Equivalent series resistance of 80 mΩ at 20°C measured at 100 kHz, supporting efficient high-frequency decoupling.
• Ripple Current Capability — Low-frequency ripple current: 75 mA at 120 Hz; high-frequency ripple current: 750 mA at 300 kHz, supporting sustained ripple loads.
• Leakage & Endurance — Leakage current specified at 100 µA; rated load life of 3000 hours at 125°C under rated voltage.
• Wide Temperature Range — Operating range from -55°C to +125°C for use in harsh thermal environments.
• Compact SMD Package — Radial can SMD package, dimensions φ6.3 × 5.8 mm (L × D) with recommended land size L: 6.6 × W: 6.6 mm; polarization: polar.
• Assembly & Compliance — Lead‑free reflow capable (260°C peak correspondence) with embossed carrier taping and moisture‑proof packing; RoHS compliant.

Typical Applications

• Power rail decoupling — Low ESR and high-frequency ripple capability make this part well suited for local decoupling on DC power rails in compact electronics.
• Switching power supplies — High allowable ripple current and low loss angle support filtering and stabilization in switching regulator outputs and inputs.
• High-frequency modules — Compact SMD form factor and measured performance at 100 kHz enable use in high-frequency power modules and point-of-load circuits.

Unique Advantages

• High ripple tolerance: Rated ripple currents of 75 mA (120 Hz) and 750 mA (300 kHz) help manage transient and steady ripple stress in power circuits.
• Low ESR at high frequency: 80 mΩ ESR at 100 kHz enables effective decoupling with reduced heat generation and voltage drop.
• Extended high-temperature life: 3000 hours endurance at 125°C under rated voltage provides predictable reliability in elevated-temperature applications.
• Compact SMD footprint: φ6.3 × 5.8 mm can package and standard land pattern simplify board layout for space-constrained designs.
• Manufacturing-ready: Lead‑free reflow compatibility to 260°C peak and moisture‑proof taped packaging ease surface-mount assembly flows.
• Regulatory compliance: RoHS compliant for deployment in regions requiring lead‑free materials.

Why Choose RKS1H120MCNAFEGS?

The RKS1H120MCNAFEGS positions itself as a compact, robust SMD conductive polymer aluminum capacitor optimized for high-frequency and high-ripple power applications. Its combination of low ESR, defined ripple-current ratings, wide operating temperature range (-55°C to 125°C), and long-term endurance (3000 hours at 125°C) provides designers with a reliable option for board-level power filtering and decoupling in thermally demanding environments.

This part is suited for engineers and procurement teams seeking a compact, production-ready capacitor that balances performance, thermal endurance, and manufacturability—backed by Nichicon’s RKS series specifications and RoHS compliance.

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