LGU2G181MELB

The LGU2G181MELB from Nichicon is an aluminum electrolytic, snap‑in terminal capacitor in the LGU series designed for general‑purpose power applications. It delivers a 400 V nominal rating with 180 µF capacitance and is built for sustained ripple handling and long endurance at elevated temperatures.

Key value propositions include high‑voltage operation, robust ripple current capability at both low and high frequencies, and a 3000‑hour endurance at 105°C, making it suitable for designs that require durable, high‑voltage bulk capacitance in a compact snap‑in package.

Key Features

• Rated Voltage & Capacitance — 400 V nominal rating with 180 µF capacitance and ±20% tolerance, providing predictable bulk capacitance for high‑voltage circuits.
• Snap‑In Radial Package — φ30 × 30 mm can (3 × 3 cm) snap‑in mounting for secure PCB insertion and mechanical stability in through‑hole assemblies.
• High Temperature Endurance — Specified lifetime of 3000 hours at 105°C when subjected to rated ripple current, demonstrating long‑term stability under elevated operating temperature.
• Ripple Current Performance — 980 mA low‑frequency ripple current at 120 Hz and 1.4014 A high‑frequency ripple current at 50 kHz, enabling effective ripple handling across a wide frequency range.
• Low Loss Characteristic — tanδ (DF) = 0.15 maximum at 20°C and 120 Hz for stable impedance and reduced dissipation in AC conditions.
• Low Leakage — Leakage current specified at 800 µA, supporting low‑loss storage and minimizing DC bias leakage in circuits.
• Operating Temperature Range — Rated for operation from −25°C to 105°C, matching the LGU series’ high‑temperature capability for 315–450 V range parts.
• Compliance & Packaging — RoHS‑compliant material and tray packing; part is in mass production.

Typical Applications

• High‑Voltage Power Supplies — Bulk smoothing and energy storage on 400 V rails where sustained ripple endurance and low leakage are required.
• Industrial Power Electronics — General‑purpose filtering and decoupling in industrial converters and control equipment that operate at elevated temperatures.
• Energy Storage & DC Link — Bulk capacitance for DC link and energy buffering in systems that demand high‑voltage capacitance with reliable ripple performance.

Unique Advantages

• High‑Voltage Capacity: 400 V rating provides headroom for high‑voltage circuits while offering 180 µF bulk capacitance for energy storage needs.
• Proven Endurance: Designed to withstand 3000 hours at 105°C with rated ripple current, assuring durability in high‑temperature operating environments.
• Wide Frequency Ripple Handling: Specified ripple currents at 120 Hz and 50 kHz deliver predictable performance across low and high frequency ripple conditions.
• Compact Snap‑In Form Factor: φ30 × 30 mm snap‑in can simplifies mechanical mounting and saves PCB area compared with larger high‑voltage solutions.
• Low Dissipation: tanδ = 0.15 at 20°C/120 Hz helps minimize power loss and heating under AC ripple conditions.
• RoHS‑Compliant & Production Ready: Material compliance and tray packing support streamlined procurement and manufacturing integration.

Why Choose LGU2G181MELB?

LGU2G181MELB is positioned for engineers seeking a reliable, high‑voltage aluminum electrolytic capacitor with strong ripple endurance and long life at elevated temperatures. Its combination of 400 V rating, 180 µF capacitance, low tanδ, and specified ripple current values make it a solid choice for designs that require durable bulk capacitance in a compact snap‑in package.

This part is well suited to general‑purpose power electronic designs where voltage, ripple performance, and long‑term stability are key considerations. Being RoHS‑compliant and in mass production, it supports predictable sourcing and integration into production builds.

Request a quote or submit a pricing and availability inquiry to obtain lead‑time and volume pricing information for LGU2G181MELB.