RL81C331MDN1

The RL81C331MDN1 from Nichicon is a conductive polymer aluminum solid electrolytic capacitor in the RL8 series, engineered for low ESR and high ripple-current applications in general-purpose electronic designs. Its compact φ8×8 mm radial-can package and radial lead configuration make it suitable for space-constrained assemblies that require robust power-filtering performance.

Key value propositions include ultra-low ESR for improved high-frequency performance, high ripple-current handling, and a broad operating temperature range backed by series load-life specifications at elevated temperature.

Key Features

• Core Technology Conductive polymer aluminum solid electrolyte provides low ESR and stable performance across frequency.
• Electrical Rating 330 µF capacitance at 16 V with polarization and tolerance of -20% to +20%.
• Ultra-Low ESR ESR specified at 12 mΩ measured at 100 kHz (20°C), enabling improved high-frequency decoupling and reduced loss.
• High Ripple Current Rated ripple current up to 5 A at 300 kHz and 500 mA at 120 Hz, supporting demanding switching power and filtering applications.
• Low-Profile, Radial Package Compact φ8×8 mm can with 3.5 mm lead spacing and radial lead mounting for through-hole assemblies.
• Temperature and Endurance Operating temperature range −55°C to +105°C; series load-life endurance stated as 2000/5000 hours at 105°C.
• Assembly and Compliance Radial lead type compatible with lead-free flow soldering conditions and compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General-Purpose Power Filtering Low ESR and high ripple capability make this capacitor suitable for bulk and decoupling capacitors on power rails in general electronic designs.
• Switching Power Supplies High ripple-current rating supports smoothing and filtering in switching regulator outputs and related power conversion circuits.
• PCB Through-Hole Assemblies Radial lead form and compact φ8×8 mm package fit space-constrained, through-hole boards where reliable solderability and mechanical retention are required.

Unique Advantages

• Low ESR for High-Frequency Performance: 12 mΩ ESR at 100 kHz reduces ripple voltage and power loss in high-frequency circuits.
• High Ripple-Current Handling: Up to 5 A at 300 kHz enables robust operation in demanding switching and filtering roles.
• Space-Efficient Low Profile: φ8×8 mm size provides strong capacitance and performance in a compact through-hole footprint.
• Durability at Elevated Temperature: Series load-life ratings of 2000/5000 hours at 105°C support sustained performance in hot environments.
• Assembly-Ready and RoHS-Compliant: Radial lead design meets lead-free flow soldering conditions and complies with RoHS (2011/65/EU, (EU)2015/863).

Why Choose RL81C331MDN1?

The RL81C331MDN1 combines conductive-polymer low-ESR behavior, high ripple-current capability, and a compact radial-can package to address power-filtering needs in general-purpose electronic designs. Its specified electrical characteristics—330 µF at 16 V, 12 mΩ ESR at 100 kHz, and ripple-current ratings up to 5 A at 300 kHz—make it a practical choice where high-frequency stability and thermal endurance are required.

Designed within Nichicon’s RL8 series, this part is appropriate for engineers seeking a reliable, manufacturable through-hole capacitor with lead-free soldering compatibility and RoHS compliance for medium- and high-stress power applications.

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