RKS1D121MCNAHFGS

The RKS1D121MCNAHFGS from Nichicon is a surface-mount conductive polymer aluminum solid electrolytic capacitor in the RKS series. It provides 120 µF capacitance at a 20 V rating with a compact φ8 × 6.7 mm can-style SMD package.

Engineered for low impedance and high allowable ripple current, this capacitor delivers stable performance across a wide temperature range (−55 °C to +125 °C) and is specified for a 3000-hour endurance at 125 °C, making it suitable for demanding power-conditioning and high-frequency decoupling uses.

Key Features

• Capacitance & tolerance — 120 µF with ±20% tolerance measured at 120 Hz, 20 °C.
• Rated voltage — 20 V DC rating for low-voltage power stages.
• Low ESR — 30 mΩ equivalent series resistance measured at 20 °C, 100 kHz, supporting efficient high-frequency performance.
• High ripple capability — Rated ripple current of 160 mA at 120 Hz (low frequency) and 1.6 A at 300 kHz (high frequency) for robust handling of switching currents.
• Leakage current — Specified leakage current of 120 µA after rated voltage application.
• Wide temperature and endurance — Operating range −55 °C to +125 °C with a rated load life of 3000 hours at 125 °C.
• SMD package & reflow compatible — φ8 × 6.7 mm radial can in an SMD configuration; compatible with lead-free reflow soldering (260 °C peak) and supplied in embossed carrier taping with moisture-proof packing.
• Regulatory status — RoHS compliant.

Typical Applications

• Power supply decoupling and bulk smoothing — Low ESR and high ripple capability make it effective for smoothing outputs and stabilizing supply rails.
• Switching power stages and DC–DC converters — High-frequency ripple rating and low impedance support switching regulator output and input filtering.
• High-frequency power modules — Designed to handle high allowable ripple current at hundreds of kilohertz for power-dense designs.

Unique Advantages

• Low impedance for high-frequency performance: 30 mΩ ESR at 100 kHz reduces voltage ripple and improves transient response in high-speed circuits.
• High ripple handling: 1.6 A allowed at 300 kHz supports demanding switching applications and reduces the need for multiple parallel capacitors.
• Extended high-temperature life: 3000 hours endurance at 125 °C provides predictable lifetime in elevated-temperature environments.
• Compact SMD can with reflow compatibility: φ8 × 6.7 mm package and lead-free reflow rating (260 °C peak) simplify automated assembly and board-level integration.
• Measured, verifiable leakage behavior: Specified leakage current of 120 µA aligns with the capacitor’s capacitance and voltage rating for predictable bias performance.
• Supply-ready packaging: Embossed carrier taping with moisture-proof packing supports high-volume surface-mount assembly flows.

Why Choose RKS1D121MCNAHFGS?

The RKS1D121MCNAHFGS balances compact SMD packaging with high ripple capability, low ESR, and long-term stability at elevated temperatures. Its specifications—120 µF at 20 V, 30 mΩ ESR (100 kHz), 1.6 A high-frequency ripple rating, and 3000-hour life at 125 °C—make it a practical choice for designers needing reliable power-stage decoupling and bulk energy storage in compact assemblies.

This part is suited to engineers and purchasers targeting robust, surface-mount capacitor solutions for high-frequency switching environments and thermally demanding installations, backed by Nichicon’s RKS series design and RoHS compliance.

Request a quote or submit an inquiry for pricing, lead times, and available packaging quantities to evaluate RKS1D121MCNAHFGS for your design and production needs.