RL81D331MCNASQ

The RL81D331MCNASQ is a conductive-polymer aluminum solid electrolytic capacitor in a low-profile radial lead package (φ8×8 mm). It delivers 330 µF capacitance at 20 V with a focus on low ESR and high ripple-current capability for general-purpose electronic designs.

Engineered for compact power-filtering and energy-storage roles, this part combines a wide operating temperature range (−55 °C to 105 °C) and extended endurance (5,000 hours at 105 °C) to support reliable operation in demanding ambient conditions.

Key Features

• Capacitance & Voltage — 330 µF rated capacitance with a 20 V rating and tolerance of −20% to +20%, suitable for bulk smoothing and decoupling in low-voltage circuits.
• Conductive Polymer Construction — Solid conductive-polymer electrolyte technology for improved electrical stability and low loss compared with traditional wet electrolytes.
• Low ESR & High-Frequency Performance — ESR of 17 mΩ measured at 20 °C / 100 kHz and a tanδ of 0.12 (20 °C, 120 Hz) delivering efficient high-frequency performance.
• High Ripple Current Capability — Rated ripple currents of 388 mA at 120 Hz and 3.88 A at 300 kHz enable effective handling of both low- and high-frequency ripple stresses.
• Reliability & Endurance — 5,000 hours rated life at 105 °C under rated voltage, with defined retention limits for capacitance, tanδ and ESR after endurance testing.
• Compact Radial Package — Low-profile φ8×8 mm can with radial leads, 3.5 mm lead spacing (±0.5 mm), for easy through-hole mounting and space-constrained layouts.
• Leakage Current & Polarization — Polarized device with specified leakage current of 1,320 µA (measured after 2 minutes at 20 °C under rated voltage).
• Environmental Compliance & Packaging — RoHS compliant; available in Bulk (no terminal forming) or Bag packing for flexible procurement and assembly workflows.

Typical Applications

• General-purpose power filtering — Low ESR and high ripple-current rating make this capacitor suitable for bulk smoothing and decoupling in power-supply rails.
• High-frequency switching circuits — Solid polymer construction and low ESR at 100 kHz support high-frequency ripple handling in switching regulators and converters.
• Compact embedded systems — Low-profile φ8×8 package and radial lead format fit space-constrained boards where through-hole mounting is preferred.

Unique Advantages

• Reduced power loss: 17 mΩ ESR at 100 kHz minimizes dissipative losses in high-frequency applications, improving efficiency and thermal performance.
• Robust ripple handling: Ripple ratings up to 3.88 A at 300 kHz help maintain voltage stability under heavy dynamic loads.
• Extended high-temperature life: 5,000 hours at 105 °C provides predictable aging and endurance in elevated-temperature environments.
• Space-efficient packaging: φ8×8 low-profile can with 3.5 mm lead spacing enables compact board layouts without sacrificing capacity.
• Solid electrolyte reliability: Conductive polymer formulation gives stable electrical characteristics and improved high-frequency behavior versus liquid electrolytes.
• Compliant sourcing options: RoHS compliance and multiple packing choices (Bulk / Bag) simplify procurement and assembly planning.

Why Choose RL81D331MCNASQ?

RL81D331MCNASQ is positioned for designs that require compact, low-ESR energy storage with strong ripple-current capability and long-term high-temperature endurance. Its conductive-polymer construction and defined electrical parameters make it a practical choice where stable high-frequency performance and predictable aging are important.

This part is well suited for engineers and procurement teams specifying general-purpose capacitors for power-filtering, switching supplies, and embedded systems that require RoHS compliance and reliable through-hole mounting options.

Request a quote or submit an inquiry to receive pricing, availability, and packaging options for RL81D331MCNASQ.