RNU1E181MCN1

The RNU1E181MCN1 is a conductive polymer aluminum solid electrolytic capacitor in a radial lead can, offering 180 µF nominal capacitance at a 25 V rated voltage. It is designed for applications that require low ESR and high ripple-current handling in a compact φ8×11.5 mm package.

With a wide operating temperature range from −55 °C to 105 °C and a rated load life of 2000 hours at 105 °C, this RoHS-compliant component is intended for general-purpose power and decoupling applications where dependable performance and compact size matter.

Key Features

• Capacitance & Tolerance — 180 µF nominal capacitance with ±20% tolerance at 120 Hz, 20 °C.
• Rated Voltage — 25 V rated voltage suitable for a range of low-voltage power rails.
• Low ESR — 16 mΩ ESR measured at 20 °C / 100 kHz, enabling improved efficiency in high-current AC conditions.
• High Ripple Current — 465 mA at 120 Hz (low frequency) and 4.65 A at 300 kHz (high frequency), with frequency coefficients defined across 120 Hz–300 kHz to size ripple capacity accurately.
• Leakage Current — 900 µA maximum leakage after 2 minutes at 20 °C under rated voltage.
• Endurance — Rated lifetime of 2000 hours at 105 °C (load life), consistent with the RNU series endurance specifications.
• Package & Mounting — Radial lead can with φ8×11.5 mm case size, lead spacing 3.5 mm ±0.5 mm, supplied in bulk bag packing (no terminal forming).
• Environmental Compliance — RoHS compliant.

Typical Applications

• DC Power Rail Decoupling — Low ESR and high ripple-current capability make this capacitor suitable for stabilizing and smoothing low-voltage DC rails in power supplies and point-of-load converters.
• Switch-Mode Power Supplies — Handles high-frequency ripple currents (4.65 A at 300 kHz) for output filtering and energy smoothing in compact SMPS designs.
• Industrial Control Electronics — Wide operating temperature range (−55 °C to 105 °C) and a 2000-hour life rating at 105 °C fit general-purpose industrial power and control circuits.
• Embedded Systems — Compact φ8×11.5 mm radial package and low ESR help meet tight board-space and transient-response requirements in embedded and IoT devices.

Unique Advantages

• High ripple handling in a small footprint: 4.65 A ripple capability at 300 kHz combined with a φ8×11.5 mm can delivers high dynamic performance where board area is limited.
• Low ESR for improved efficiency: 16 mΩ ESR at 100 kHz reduces losses and voltage droop under high AC currents, improving regulator stability and thermal performance.
• Temperature resilience: Rated for −55 °C to 105 °C operation and a 2000-hour life at 105 °C for reliable performance in demanding thermal environments.
• Radial lead format for through-hole assemblies: Easy to handle and install in through-hole or hybrid assemblies; supplied in bulk bag packing for production workflows.
• Series-proven electrical characteristics: Part of the RNU family, which emphasizes low ESR and high ripple capability per the series datasheet specifications.

Why Choose RNU1E181MCN1?

The RNU1E181MCN1 positions itself as a practical choice when low ESR, compact size, and high ripple-current capability are required together. Its conductive polymer aluminum construction delivers the electrical characteristics needed for robust decoupling and filtering in power-sensitive designs, while the radial lead package supports straightforward assembly in through-hole manufacturing processes.

This capacitor is well-suited to engineers and procurement teams designing compact power supplies, embedded systems, and industrial electronics who need verifiable performance data (ESR, ripple current, leakage, temperature range, and endurance) and a RoHS-compliant part that is available in mass production.

For pricing, lead times, or to request a formal quote for RNU1E181MCN1, please contact sales or request a quote through your usual procurement channel.