RNU1E221MDN1

The RNU1E221MDN1 is a conductive polymer aluminum solid electrolytic capacitor in a radial-lead can package, rated 220 µF at 25 V with ±20% tolerance. It combines low ESR and high ripple current capability with a compact φ8×11.5 mm footprint and a -55°C to 105°C operating range for general-purpose electronic designs.

Designed for mass production and supplied in bulk bag packing with no terminal forming, this part targets applications that require robust ripple handling, low losses at high frequency, and long endurance at elevated temperature.

Key Features

• Core Dielectric  Conductive polymer aluminum solid electrolyte for low loss and stable performance across temperature.
• Capacitance & Tolerance  220 µF nominal capacitance with ±20% tolerance at 120 Hz, 20°C.
• Rated Voltage  25 V DC rated voltage suitable for common power rails.
• Low ESR  16 mΩ ESR measured at 20°C / 100 kHz, reducing dissipation in high-frequency circuits.
• High Ripple Current  465 mA at 120 Hz (low frequency) and 4.65 A at 300 kHz (high frequency) to support heavy ripple and switching loads.
• Endurance & Temperature  2000 hours life at 105°C and rated operating range of -55°C to 105°C for extended thermal reliability.
• Package & Mechanical  Radial lead can, φ8×11.5 mm case (L: 1.15 × D: 0.8 cm) with 3.5 mm lead spacing (±0.5 mm).
• Leakage Current  Specified leakage current of 1100 µA (after 2 minutes at 20°C), enabling predictable bias behavior.
• Environmental  RoHS compliant and supplied in bulk bag packing for production assembly.

Typical Applications

• Power supply filtering  Smooths DC bus and output rails where low ESR and high ripple current help reduce voltage ripple and thermal stress.
• DC–DC converters  Supports switching regulators and converters that require stable capacitance and low impedance at high frequency.
• Industrial control  Suitable for general-purpose industrial electronics that operate across a wide temperature range and need long endurance at elevated temperature.
• Consumer electronics  Fits compact assemblies needing radial-lead mounting and reliable high-frequency performance for decoupling and energy storage.

Unique Advantages

• Low ESR for reduced losses: 16 mΩ at 20°C/100 kHz minimizes heat generation and improves efficiency in high-frequency circuits.
• High ripple handling: Rated for 465 mA at 120 Hz and 4.65 A at 300 kHz to withstand demanding ripple currents from switching supplies.
• Thermal endurance: 2000 hours at 105°C provides reliability for applications with elevated operating temperatures.
• Compact radial package: φ8×11.5 mm can with 3.5 mm lead spacing balances board space and ease of through-hole assembly.
• Predictable leakage behavior: Specified leakage current (1100 µA) allows designers to budget bias and leakage in power architectures.
• Production-ready supply: Mass production status and bulk bag packing simplify procurement and assembly planning.

Why Choose RNU1E221MDN1?

RNU1E221MDN1 is positioned for engineers who need a reliable, low-impedance capacitor for general-purpose power and decoupling applications. Its combination of conductive polymer chemistry, low ESR, and high ripple current ratings delivers measurable benefits in switching and high-frequency environments while maintaining a compact radial-lead form factor.

This capacitor is well suited to designs that require predictable thermal endurance and consistent electrical characteristics over a -55°C to 105°C range. Its production-ready packaging and clear electrical specifications make it a practical choice for volume manufacturing and long-term deployment.

If you would like pricing, availability, or lead-time information for RNU1E221MDN1, request a quote or contact sales to discuss your project requirements and order quantities.