RL81C181MCN1

The RL81C181MCN1 is a Nichicon RL8 series conductive polymer aluminum solid electrolytic capacitor designed for general-purpose electronic applications that require low equivalent series resistance and high ripple handling. Its conductive polymer construction and radial-lead, low-profile package deliver reliable performance for compact power circuits and board-level filtering.

Key characteristics include a rated capacitance of 180 µF at 16 V, ultra low ESR, high ripple-current capability, and a rated operating range from −55 °C to 105 °C with load-life ratings at elevated temperature.

Key Features

• Conductive polymer aluminum solid electrolyte — Polymer electrolyte construction for stable electrical performance and reduced ESR compared with conventional electrolytics.
• Capacitance and voltage — 180 µF nominal capacitance at a rated voltage of 16 V with tolerance −20% to +20%.
• Ultra low ESR — ESR of 12 mΩ measured at 100 kHz and 20 °C, enabling efficient high-frequency operation and reduced power loss.
• High ripple-current capability — Rated ripple current up to 5 A at 300 kHz and 500 mA at 120 Hz, supporting switching regulators and high-frequency power rails.
• Compact, low-profile radial package — Axial dimensions φ8 × L8 mm with 3.5 mm lead spacing and a seated height of 8 mm for space-constrained designs.
• Wide temperature and endurance — Operating range −55 °C to 105 °C and load-life specified at 2000/5000 hours at 105 °C for sustained high-temperature reliability.
• Assembly and compliance — Radial lead type suitable for lead-free flow soldering conditions and compliant with RoHS directives.

Typical Applications

• Power-supply filtering — Bulk and output filtering for DC-DC converters and switching regulators where low ESR and high ripple current reduce voltage ripple and thermal stress.
• Decoupling on high-frequency rails — Local decoupling for power rails in compact boards, leveraging 12 mΩ ESR at 100 kHz for improved transient response.
• Compact consumer and industrial electronics — Low-profile φ8×8 mm package fits space-constrained assemblies requiring reliable smoothing and energy buffering.

Unique Advantages

• Better thermal and ripple endurance: Rated ripple current of 5 A at 300 kHz and endurance of 2000/5000 hours at 105 °C reduce the need for oversized capacitors in hot, high-load applications.
• Lower loss in high-frequency systems: Ultra low ESR (12 mΩ at 100 kHz) minimizes I²R losses and heatsinking requirements in switching power stages.
• Space-efficient packaging: φ8 × 8 mm footprint and 3.5 mm lead spacing deliver a compact solution for board-level power management without sacrificing performance.
• Lead-free assembly compatibility: Radial lead construction supports lead-free flow soldering processes, simplifying integration into contemporary manufacturing lines.
• Wide temperature range: −55 °C to 105 °C rating provides suitability across a broad set of environmental conditions.
• Regulatory compliance: RoHS-compliant construction aligns with modern environmental requirements.

Why Choose RL81C181MCN1?

The RL81C181MCN1 combines conductive-polymer reliability with ultra-low ESR and substantial ripple-current capability in a compact, radial-lead package. That combination makes it well suited for designers needing effective high-frequency filtering and robust thermal performance in confined PCB real estate.

This part is ideal for engineers building compact power supplies, switching regulators, and general-purpose circuits where measurable reductions in ESR and improved ripple handling translate directly into smaller systems, lower losses, and predictable endurance at elevated temperature.

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