RKS1D680MCNAFEGS

The RKS1D680MCNAFEGS from Nichicon is a surface-mount conductive polymer aluminum solid electrolytic capacitor offering 68 µF capacitance at a 20 V rating. Designed for compact SMD assemblies, it combines low ESR and high allowable ripple current with long-term high-temperature endurance.

Its specification set — including an operating range of −55°C to 125°C, 3000 hours life at 125°C, and reflow-compatible packaging — targets demanding board-level power applications that require stable performance under elevated temperature and high-frequency ripple conditions.

Key Features

• Capacitance & Voltage: 68 µF nominal capacitance with a rated voltage of 20 V and tolerance of −20% to +20% for predictable decoupling and energy storage.
• Conductive Polymer Electrolyte: Solid polymer construction provides low dielectric loss (tanδ = 0.12 at 20°C, 120 Hz) and controlled leakage current (100 µA specified).
• Low ESR and High Ripple Handling: ESR of 50 mΩ at 20°C/100 kHz, with specified ripple current of 90 mA at 120 Hz and 900 mA at 300 kHz for improved high-frequency performance.
• High-Temperature Endurance: Rated for −55°C to 125°C with a load-life specification of 3000 hours at 125°C to support extended operation in hot environments.
• SMD Can Package: Radial, can-style SMD package sized φ6.3 × 5.8 mm (L × D) with a surface-mount land recommendation of 6.6 × 6.6 mm for compact board layouts.
• Assembly-Ready Packaging: Supplied in embossed carrier taping with moisture-proof packing suitable for standard surface-mount assembly processes and lead-free reflow profiles up to 260°C peak.
• Regulatory: RoHS compliant.

Typical Applications

• High‑frequency power stages: Low ESR (50 mΩ at 100 kHz) and 900 mA ripple current at 300 kHz make this capacitor suitable for smoothing and decoupling in high-frequency switching circuits.
• High-temperature electronics: Rated for operation from −55°C to 125°C with 3000 h endurance at 125°C for designs exposed to elevated ambient temperatures.
• Compact SMD modules: Small φ6.3 × 5.8 mm can package and SMD tape-and-reel packing enable integration into space-constrained board layouts and automated assembly.

Unique Advantages

• High ripple capability: 900 mA at 300 kHz and 90 mA at 120 Hz provide margin for high-frequency and low-frequency ripple currents without excessive heating.
• Low ESR for efficient filtering: 50 mΩ ESR at 100 kHz reduces loss and voltage drop in power delivery networks.
• Extended high-temperature life: 3000 hours at 125°C supports longer maintenance intervals and reliability in thermally stressed applications.
• Reflow-ready SMD form factor: Designed for lead-free reflow soldering up to 260°C peak, enabling modern surface-mount manufacturing flows.
• Compact footprint: φ6.3 × 5.8 mm size helps minimize board area for dense power modules or compact electronic assemblies.
• RoHS compliant supply: Conforms to RoHS requirements for environmental and regulatory compliance.

Why Choose RKS1D680MCNAFEGS?

The RKS1D680MCNAFEGS positions itself as a reliable SMD conductive polymer capacitor that balances compact size, low ESR, and high ripple capability with extended high-temperature endurance. Its specification set is tailored for board-level power applications where stable high-frequency performance and long-term operation at elevated temperatures are required.

This part is well suited to engineers and procurement teams designing compact, assembly-line manufacturable modules who need verifiable electrical performance (68 µF, 20 V, 50 mΩ ESR) and documented endurance (3000 h at 125°C) from a RoHS-compliant component backed by Nichicon's RKS series datasheet information.

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