RKS1E331MCNAJJGS

The RKS1E331MCNAJJGS from Nichicon is a surface‑mount conductive polymer aluminum electrolytic capacitor in the RKS series, offering 330 µF at a 25 V rating. Designed for applications requiring high capacitance in a compact SMD can (φ10 × 10 mm), it combines low ESR and high ripple capability with extended thermal endurance.

Key use cases include power supply decoupling, bulk energy storage for DC‑DC converters, and general‑purpose power filtering in industrial and communications equipment. Its value proposition centers on low loss (tanδ), high ripple tolerance, and long life at elevated temperature.

Key Features

• Capacitance & Voltage — 330 µF rated capacitance with a 25 V rated voltage and ±20% tolerance (measured at 120 Hz, 20°C).
• Conductive‑Polymer Electrolyte — Solid conductive polymer aluminum construction for improved stability and low equivalent series resistance compared with non‑polymer types.
• Low ESR — ESR specified at 20 mΩ measured at 100 kHz and 20°C, supporting low‑loss operation at high frequencies.
• High Ripple Current — Low‑frequency ripple current of 200 mA (120 Hz) and high‑frequency ripple capability of 2.0 A (300 kHz) to support demanding power stages.
• Loss Tangent — tanδ = 0.12 (measured at 20°C, 120 Hz), indicating low dielectric loss for stable filtering performance.
• Wide Temperature & Long Life — Rated for −55°C to +125°C with an endurance (load life) of 3000 hours at 125°C.
• Leakage Current — Specified leakage current of 412 µA after application of rated voltage.
• SMD Packaging & Assembly — φ10 × 10 mm SMD can (radial can – SMD) supplied in embossed carrier taping with moisture‑proof packing; compatible with lead‑free reflow up to 260°C peak per series guidance.
• Compliance — RoHS compliant.

Typical Applications

• Power Supply Decoupling — Bulk decoupling and smoothing for switching regulators and point‑of‑load converters where low ESR and high ripple handling improve transient response.
• DC‑DC Converters — Input/output filtering for high‑frequency converters benefiting from the capacitor’s low loss and 2.0 A high‑frequency ripple rating.
• Industrial Electronics — Power filtering and energy buffering in industrial control systems operating across wide temperatures up to 125°C.
• Communications Equipment — Bulk storage and noise suppression in telecom and networking equipment that require compact, high‑capacitance SMD solutions.

Unique Advantages

• High Capacitance in a Compact SMD Can: 330 µF and a φ10 × 10 mm footprint deliver substantial energy storage where board space is limited.
• Low ESR for Efficient Filtering: 20 mΩ ESR at 100 kHz reduces conduction losses and improves heat management in high‑frequency circuits.
• Strong High‑Frequency Performance: 2.0 A ripple at 300 kHz supports modern switching topologies and helps maintain voltage stability under dynamic loads.
• Extended Thermal Endurance: 3000 hours at 125°C enables reliable operation in elevated‑temperature environments and long product lifecycles.
• Assembly‑Friendly Packaging: Embossed carrier taping with moisture‑proof packing and lead‑free reflow compatibility simplify automated manufacturing and quality control.

Why Choose RKS1E331MCNAJJGS?

RKS1E331MCNAJJGS positions itself as a high‑capacitance, low‑loss SMD solution for engineers who need reliable bulk energy storage and robust filtering in compact footprints. With a conductive‑polymer aluminum construction, low ESR, specified high‑frequency ripple capability, and a −55°C to +125°C operating range, it suits designs that demand stable performance across temperature and frequency.

This part is well suited for system designers in industrial, communications, and power electronics segments who require durable SMD capacitors with predictable endurance (3000 hours at 125°C), RoHS compliance, and assembly‑ready packaging for high‑volume production.

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