RNU1E331MDN1

The RNU1E331MDN1 is a conductive polymer aluminum solid electrolytic capacitor from Nichicon's RNU (FPCAP) series. It delivers high capacitance with low equivalent series resistance (ESR) in a compact radial lead package for general-purpose electronic designs.

Designed for applications that require high ripple current capability and robust thermal endurance, this capacitor is RoHS compliant and supports lead‑free flow soldering conditions.

Key Features

• Capacitance and Voltage — 330 µF rated at 25 V for bulk energy storage and smoothing in general-purpose circuits.
• Low ESR — 14 mΩ measured at 100 kHz (20°C), supporting high-frequency performance and reduced power loss.
• High Ripple Current — Rated ripple current of 500 mA at 120 Hz and 5 A at 300 kHz to handle both low- and high-frequency ripple conditions.
• Temperature Range — Operates from −55°C to +105°C to cover a wide range of environmental conditions.
• Load Life / Endurance — Load life specified at 2000/5000 hours at 105°C per series specification for sustained reliability under elevated temperature.
• Package and Mounting — Radial lead, can-style package with 5 mm lead spacing and compact physical size (L: 1.25 cm × D: 1.0 cm).
• Polarized — Designed for polarized circuit applications; observe polarity during assembly.
• Environmental Compliance — Compliant with the RoHS directive (2011/65/EU, (EU) 2015/863) and compatible with lead‑free flow soldering conditions.

Typical Applications

• General-purpose electronic assemblies — Suitable for circuits requiring bulk capacitance and low ESR in a radial lead format.
• Power supply smoothing — Use where high ripple current capability and stable performance at elevated temperatures are needed.
• High-frequency circuits — Low ESR at 100 kHz and specified high-frequency ripple ratings support applications with significant HF ripple components.

Unique Advantages

• Low ESR at 100 kHz: 14 mΩ ESR reduces losses and supports improved performance in high-frequency environments.
• High ripple-current handling: Rated for up to 5 A at 300 kHz and 500 mA at 120 Hz, enabling reliable operation under varying ripple conditions.
• Wide operating temperature: −55°C to +105°C capability supports deployment across diverse ambient environments.
• Robust thermal endurance: Load life specified at 2000/5000 hours at 105°C for long-term stability in high-temperature applications.
• Compact radial package: Small can footprint (L: 1.25 cm × D: 1.0 cm) with 5 mm lead spacing simplifies placement in through‑hole assemblies.
• Regulatory and process compatibility: RoHS compliant and compatible with lead‑free flow soldering conditions for modern manufacturing processes.

Why Choose RNU1E331MDN1?

The RNU1E331MDN1 balances high capacitance, low ESR, and elevated ripple-current capability in a compact radial lead form factor, making it suitable for a wide range of general-purpose electronic designs. Its specified operating range and load-life characteristics provide designers with predictable performance in both ambient and elevated-temperature environments.

This capacitor is well suited for engineers and procurement teams seeking a RoHS-compliant, conductive polymer aluminum solution that aligns performance (ESR and ripple ratings) with practical through-hole mounting and lead‑free assembly workflows.

Request a quote or contact sales to discuss availability and to obtain pricing and delivery information for RNU1E331MDN1.