RL81C221MDNASQ

The RL81C221MDNASQ is a conductive polymer aluminum solid electrolytic capacitor in a low-profile φ8 radial-can package. Designed for general-purpose electronic designs, it combines low equivalent series resistance with high ripple-current capability in a compact radial-lead form.

With 220 µF capacitance at 16 V rating, a temperature range of -55 °C to 105 °C and a rated load life of 5000 hours at 105 °C, this part targets applications that require stable decoupling, smoothing and high-frequency ripple handling in space-constrained layouts.

Key Features

• Capacitance & Voltage: 220 µF nominal capacitance with a 16 V rated voltage and tolerance of -20% to +20% for predictable energy storage and filtering.
• Low ESR: 12 mΩ ESR measured at 20 °C / 100 kHz, supporting efficient high-frequency performance and reduced power loss.
• High Ripple Current Handling: Rated ripple currents of 500 mA at 120 Hz and 5 A at 300 kHz enable robust performance under both low- and high-frequency ripple conditions.
• Loss Tangent (tan δ): tanδ = 0.12 (measured at 20 °C, 120 Hz), aiding predictable loss characterization in resonant and decoupling applications.
• Long Endurance: Load life/endurance specified at 5000 hours at 105 °C for extended operation in elevated-temperature environments.
• Package & Mounting: Low-profile φ8 × 8 mm can with radial leads and 3.5 mm lead spacing (±0.5 mm); available in bulk (no terminal forming) and bag packing, mass-production status.
• Leakage Current: Specified leakage current of 704 µA (measured after standard conditioning), allowing designers to budget standby losses accurately.
• Environmental Compliance: RoHS compliant and manufactured as part of Nichicon’s RL8 series.

Typical Applications

• General-purpose power filtering: Smoothing and decoupling on DC power rails where 220 µF capacitance combined with low ESR and high ripple capacity improves voltage stability.
• High-frequency power circuits: Circuits requiring effective ripple handling at hundreds of kilohertz benefit from the 5 A ripple rating at 300 kHz and 12 mΩ ESR at 100 kHz.
• Compact, space-constrained designs: Low-profile φ8 × 8 mm package fits in tight layouts that still require substantial capacitance and reliability at elevated temperatures.

Unique Advantages

• Compact high-performance form factor: φ8 × 8 mm low-profile can delivers 220 µF capacitance without a large footprint, simplifying board layout in constrained spaces.
• High-frequency efficiency: 12 mΩ ESR at 100 kHz and a measured tanδ of 0.12 reduce losses and heat generation in switching and high-frequency applications.
• Strong ripple endurance: 5 A ripple capability at 300 kHz and defined frequency coefficients allow designers to specify reliable ripple handling across a wide frequency range.
• Extended elevated-temperature life: 5000-hour rating at 105 °C supports long-term performance in demanding thermal environments.
• Predictable leakage characteristics: Specified leakage current value (704 µA) enables accurate power-loss budgeting for standby and low-power modes.
• Production-ready supply: Available in bulk or bag packing and listed as mass production for straightforward procurement and assembly planning.

Why Choose RL81C221MDNASQ?

RL81C221MDNASQ positions itself as a reliable, low-profile conductive polymer aluminum capacitor for designs that require measurable high-frequency performance, compact packaging and long-term endurance at elevated temperatures. Its combination of 220 µF capacitance, 16 V rating, low ESR and strong ripple-current handling makes it well suited to engineers balancing board space, thermal demands and power integrity.

This part is ideal for general-purpose electronic designs where predictable loss characteristics, controlled leakage, and production-ready packaging are priorities. Specified endurance and RoHS compliance support long-term deployment and regulatory alignment.

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