LGR2W331MELC50

The LGR2W331MELC50 is a snap-in terminal aluminum electrolytic capacitor from Nichicon’s LGR long-life series. It provides 330 µF capacitance with a 450 V rated voltage and is designed for general-purpose high-voltage circuits requiring robust ripple handling.

Engineered for extended operation in elevated temperatures, this part delivers long-life assurance with endurance validated for 10,000 hours at 105°C, making it suitable where sustained high-temperature ripple performance and long service life are required.

Key Features

• Capacitance & Rated Voltage — 330 µF nominal capacitance at a 450 V rated voltage for high-voltage energy storage and decoupling.
• Snap-In Radial Package — Snap-in terminal mounting in a radial, can-style package for secure board retention and straightforward insertion into power assemblies.
• High Temperature Long Life — Rated operating temperature range of −25°C to 105°C with long-life assurance: endurance tested for 10,000 hours at 105°C under rated ripple/current conditions.
• Ripple Current Capability — Measured ripple current of 1.38 A at 120 Hz and 1.973 A at 50 kHz; frequency coefficients for 400/450 V parts establish 120 Hz = 1.00 and 50 kHz or more = 1.43 for rated ripple scaling.
• Polarized with Standard Tolerance — Polarized capacitor with capacitance tolerance of −20% to +20% (±20% at 120 Hz, 20°C).
• Leakage and Loss Characteristics — Leakage current specification (I ≤ 3√CV μA after 5 minutes at 20°C) and tan δ max of 0.20 for 450 V parts to support predictable performance.
• RoHS Compliant — Conforms to RoHS directive (2011/65/EU, (EU)2015/863), supporting regulatory requirements for restricted substances.

Typical Applications

• General-purpose high-voltage circuits — Bulk energy storage and decoupling in circuits that require a 450 V rated capacitor with long-life performance at elevated temperatures.
• Power filtering and smoothing — Filtering of DC bus and smoothing of rectified voltages where sustained ripple current handling and frequency-dependent ripple scaling are needed.
• High-temperature environments — Use in systems that operate up to 105°C and demand proven endurance (10,000 hours at 105°C) under rated ripple conditions.

Unique Advantages

• Long-life endurance: Endurance verified at 10,000 hours at 105°C ensures predictable capacitance and leakage stability over extended high-temperature operation.
• High-voltage capability: 450 V rating enables use in higher-voltage designs without the need for parallel capacitors to reach required voltage margins.
• Frequency-aware ripple performance: Specified ripple currents at 120 Hz and 50 kHz plus frequency coefficients allow designers to size components accurately across common ripple conditions.
• Secure snap-in mounting: Snap-in terminal package provides mechanical retention for radial can installations in power assemblies and panels.
• Predictable electrical limits: Defined leakage current formula and tan δ limit for 450 V parts support reliable design margins and quality control.
• Regulatory compliance: RoHS conformity supports adoption in regions and projects with restricted substance requirements.

Why Choose LGR2W331MELC50?

The LGR2W331MELC50 is positioned for designs that need a high-voltage, long-life electrolytic solution with verified ripple performance at elevated temperatures. Its combination of 330 µF at 450 V, endurance tested for 10,000 hours at 105°C, and clear ripple/frequency specifications makes it a practical choice for engineers specifying robust capacitors for demanding power circuits.

This part is suited to customers and designs prioritizing predictable long-term behavior, straightforward snap-in mounting, and compliance with RoHS requirements—providing durable performance where thermal stress and continuous ripple are part of normal operation.

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