RKS1D331MCNAJLGS

The RKS1D331MCNAJLGS is a surface-mount conductive polymer aluminum solid electrolytic capacitor in Nichicon’s RKS series designed for general-purpose power applications. It delivers high capacitance (330 µF) in a compact SMD can (φ10 × 12.4 mm) with low ESR and high allowable ripple current for demanding power-rail and high-frequency circuits.

Engineered for robustness, this part is rated for operation from −55 °C to +125 °C with an endurance of 3000 hours at 125 °C, and is supplied in embossed carrier taping with moisture-proof packing for automated assembly and storage.

Key Features

• Capacitance & Tolerance — 330 µF nominal with tolerance −20% to +20% (measured at 20 °C, 120 Hz).
• Rated Voltage & Polarity — 20 V rated, polarized electrolytic construction suited for DC power rails.
• Low ESR and High-Frequency Performance — ESR of 20 mΩ measured at 20 °C/100 kHz supports low-loss operation in high-frequency circuits.
• High Allowable Ripple Current — Low-frequency ripple current 200 mA (120 Hz) and high-frequency ripple current 2 A (300 kHz) to support converter outputs and switching supplies.
• Wide Temperature & Long Life — Operating range −55 °C to +125 °C with load life of 3000 hours at 125 °C, delivering sustained performance under elevated temperature stress.
• SMD Package & Assembly Ready — Radial can SMD package (φ10 × 12.4 mm) compatible with lead-free reflow conditions up to a 260 °C peak and supplied in embossed carrier taping / moisture-proof packing for pick-and-place.
• Leakage & Loss Characteristics — Leakage current specified at 330 µA and tan δ (DF) of 0.12 at 20 °C/120 Hz for predictable behavior in DC bias and AC environments.
• Regulatory — RoHS compliant.

Typical Applications

• Power supply decoupling — Low ESR and high ripple current capability make this capacitor suitable for smoothing and stabilizing DC power rails in compact assemblies.
• DC–DC converter output filtering — High-frequency ripple handling (2 A at 300 kHz) and low impedance at 100 kHz help maintain stable output in switching regulator designs.
• Embedded and industrial electronics — Wide temperature range and 3000‑hour endurance at 125 °C provide reliability for long-life industrial and embedded power systems.
• High-frequency power circuits — Low ESR (20 mΩ at 100 kHz) supports circuits where low-loss energy transfer at high switching frequencies is required.

Unique Advantages

• High capacitance in a compact SMD can — 330 µF in a φ10 × 12.4 mm package reduces board footprint while providing significant bulk storage for power rails.
• Improved thermal endurance — Rated for 3000 hours at 125 °C, enabling use in elevated-temperature applications where longevity is required.
• Low-loss, high-frequency readiness — 20 mΩ ESR at 100 kHz and 2 A ripple capability at 300 kHz reduce heating and improve efficiency in switching supplies.
• Reflow-compatible SMD format — Lead-free reflow compatibility (up to 260 °C peak) and embossed carrier taping support automated SMT assembly flows.
• Predictable leakage and dissipation — Specified leakage current (330 µA) and tan δ (0.12 at 20 °C/120 Hz) aid in power-budgeting and thermal design.
• RoHS compliance — Meets RoHS requirements for restricted substances.

Why Choose RKS1D331MCNAJLGS?

RKS1D331MCNAJLGS balances high capacitance, low ESR and robust thermal endurance in a compact SMD can, making it a practical choice for designers who need reliable bulk and decoupling capacitance on space-constrained PCBs. Its specified ripple current performance and low impedance at high frequency help reduce losses and thermal stress in switching regulator outputs and power distribution networks.

Produced by Nichicon and available in automated-packaging formats, this part is suited to general-purpose power designs in industrial, embedded and other long‑life applications where predictable electrical behavior and high-temperature endurance are required.

Request a quote or contact sales to discuss availability, lead times and volume pricing for RKS1D331MCNAJLGS.