RL81C331MCN1

The RL81C331MCN1 from Nichicon is a conductive polymer aluminum solid electrolytic capacitor in a low-profile radial-lead package. It provides 330 µF capacitance at a 16 V rating with low equivalent series resistance and high ripple-current capability for general-purpose power applications.

Designed for robust performance across a wide temperature range, this capacitor combines low ESR, measurable high-frequency performance, and a compact φ8×8 mm can to meet space-constrained designs that demand reliable decoupling and smoothing. The part is RoHS compliant and available in bulk or bag packaging.

Key Features

• Conductive polymer construction Solid electrolytic conductive polymer design for low ESR and stable performance.
• Capacitance and voltage 330 µF nominal capacitance at a 16 V rated voltage with tolerance ±20%.
• Ultra-low ESR ESR = 12 mΩ measured at 20°C / 100 kHz, supporting high-frequency power requirements.
• High ripple current capability Low-frequency ripple current 500 mA (120 Hz) and high-frequency ripple current 5 A (300 kHz).
• Loss tangent tanδ = 0.12 (measured at 20°C, 120 Hz) for predictable AC behavior.
• Leakage current Leakage current specified at 1056 µA (after 2 minutes at 20°C).
• Temperature and life Operating range −55°C to 105°C with a load life specified at 2000 hours at 105°C.
• Package and mounting Radial lead, φ8×8 mm can with 3.5 mm lead spacing (lead spacing tolerance ±0.5 mm); available in bulk or bag packing.
• Regulatory compliance RoHS compliant.

Typical Applications

• Power supply filtering — Bulk decoupling and smoothing in general-purpose power supplies where low ESR improves transient response.
• DC–DC converter outputs — Output-stage filtering for converters that require compact capacitors with high ripple-current capability.
• High-frequency power modules — Local energy storage and damping in modules operating at hundreds of kilohertz, leveraging the low ESR at 100 kHz.
• Industrial and consumer electronics — General-purpose use in designs requiring a wide operating temperature range and proven life at elevated temperature.

Unique Advantages

• Low ESR for improved efficiency: 12 mΩ at 20°C/100 kHz reduces power loss and heat generation in high-current circuits.
• High ripple capability: Rated for 5 A at high frequencies and 500 mA at 120 Hz, enabling compact placement near power stages.
• Compact low-profile package: φ8×8 mm can with radial leads fits space-constrained through-hole layouts while providing substantial capacitance.
• Wide temperature tolerance and defined life: −55°C to 105°C operating range and a 2000 h life rating at 105°C support demanding thermal environments.
• Straightforward assembly options: Radial-lead format with 3.5 mm lead spacing and bulk/bag packing for common through-hole manufacturing flows.

Why Choose RL81C331MCN1?

RL81C331MCN1 is positioned for engineers and buyers seeking a compact, low-ESR conductive polymer capacitor with clear high-frequency ripple ratings and defined thermal endurance. Its combination of 330 µF at 16 V, 12 mΩ ESR, and a wide −55°C to 105°C operating range makes it suitable for general-purpose power filtering and decoupling in both industrial and consumer designs.

Choosing this Nichicon RL8-series part provides measurable performance characteristics—including tanδ, leakage current, and ripple-current specifications—that simplify design verification and reliability planning for through-hole applications.

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