RNU1E221MCNASQ

The RNU1E221MCNASQ from Nichicon is a radial-lead conductive polymer aluminum solid electrolytic capacitor rated at 220 μF and 25 V. Designed for general-purpose electronic designs, it delivers low ESR and high ripple-current capability in a compact φ8×11.5 mm can.

Its combination of low impedance (16 mΩ at 100 kHz), high-frequency ripple handling (4.65 A at 300 kHz), and long endurance (5,000 hours at 105°C) makes it suitable for power filtering and decoupling applications where thermal reliability and high AC performance are required.

Key Features

• Capacitance & Voltage — 220 µF nominal capacitance with a rated voltage of 25 V and tolerance of -20% to +20% at 120 Hz, 20°C.
• Low ESR & High-Frequency Performance — ESR of 16 mΩ measured at 20°C/100 kHz supports high-frequency decoupling; rated ripple current 4.65 A at 300 kHz (frequency coefficient data available for other bands).
• Ripple Current Capability (Low & High Frequency) — Low-frequency ripple current 465 mA at 120 Hz and high-frequency ripple current 4.65 A at 300 kHz for robust AC performance across applications.
• Long Endurance & Wide Temperature Range — Rated life of 5,000 hours at 105°C and operating range from -55°C to 105°C for sustained performance in elevated-temperature environments.
• Radial Lead Package — φ8×11.5 mm can with 3.5 mm lead spacing (±0.5 mm) for through-hole mounting; available in bulk (no terminal forming) or bag packing.
• Leakage and Loss Characteristics — Leakage current specified at 1,100 µA (after 2 minutes at 20°C); tanδ (DF) of 0.12 measured at 20°C, 120 Hz.
• RoHS Compliance — Compliant with RoHS directive as stated in product data.

Typical Applications

• Power supply decoupling and smoothing — Low ESR and high ripple-current capability make this capacitor suitable for bulk decoupling and output filtering in power rails.
• High-frequency power stages — Rated ripple current up to 4.65 A at 300 kHz and ESR specified at 100 kHz support use in DC–DC converter outputs and switching regulator stages.
• General-purpose electronic assemblies — Compact radial can and through-hole mounting fit a wide range of consumer, industrial, and instrumentation designs requiring a reliable 220 µF/25 V capacitor.

Unique Advantages

• High AC handling in a compact package: 4.65 A ripple at 300 kHz combined with a φ8×11.5 mm can delivers strong performance where board space is limited.
• Low impedance at high frequency: 16 mΩ ESR at 100 kHz reduces voltage ripple and improves transient response in switching applications.
• Thermal endurance for sustained operation: 5,000 hours life rating at 105°C provides predictability for elevated-temperature deployments.
• Wide operating temperature range: −55°C to +105°C supports deployment across varied environmental conditions.
• Through-hole convenience: Radial lead form with 3.5 mm lead spacing simplifies prototyping and legacy PCB layouts.
• Regulatory compliance: RoHS compliance aligns with common environmental requirements for commercial products.

Why Choose RNU1E221MCNASQ?

RNU1E221MCNASQ offers a balanced combination of capacitance, low ESR, and high ripple-current handling in a compact radial-lead package from Nichicon’s RNU series. Its measured ESR (16 mΩ at 100 kHz), rated ripple currents across low and high frequencies, and 5,000-hour endurance at 105°C make it well suited to designers needing reliable power filtering and decoupling in densely packed or thermally demanding boards.

Ideal for engineers and procurement teams targeting robust general-purpose electrolytic solutions, this part provides verifiable electrical characteristics and packaging options (bulk or bag) for a predictable BOM item backed by Nichicon’s RNU series specifications.

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