LGR2E391MELZ45

The LGR2E391MELZ45 is a snap‑in terminal aluminum electrolytic capacitor from Nichicon’s LGR long‑life assurance series. It provides 390 µF of capacitance at a 250 V rating in a radial can snap‑in package designed for general‑purpose power applications.

Engineered for extended endurance, the LGR series withstands 10,000 hours of ripple‑current stress at 105°C and is RoHS compliant. This combination of voltage rating, bulk capacitance and ripple capability addresses designs that require robust, long‑life bulk energy storage and filtering in high‑temperature environments.

Key Features

• Capacitance & Voltage: 390 µF rated at 250 V for bulk storage and filtering in higher‑voltage DC circuits.
• Long‑life 105°C Endurance: Part of the LGR series specified to withstand 10,000 hours of D.C. bias plus rated ripple current at 105°C.
• Ripple Current Performance: Rated ripple currents of 1.3 A at 120 Hz and 1.95 A at 50 kHz for sustained AC stress handling.
• Operating Temperature Range: −40°C to +105°C to support elevated ambient and enclosure temperatures.
• Package & Mounting: Radial can with snap‑in terminals for secure chassis or module mounting; physical size L: 4.5 × D: 2.2 cm.
• Polarized Aluminum Electrolytic: Polar design suitable for DC applications where polarity is observed.
• Leakage Current Specification: Series leakage guideline I ≤ 3√(C·V) μA after 5 minutes at 20°C, per datasheet methodology.
• Capacitance Tolerance: ±20% (120 Hz, 20°C) to set design margins for bulk capacitance requirements.
• RoHS Compliance: Compliant with RoHS directives (2011/65/EU, (EU)2015/863).
• Frequency Coefficient (200/250 V): 0.81 at 50 Hz, 1.00 at 120 Hz, and 1.50 at 50 kHz or more (applies to frequency scaling of rated ripple current).

Typical Applications

• General Purpose — High‑voltage DC circuits: Use where a 250 V, 390 µF capacitor is required for bulk energy storage or DC bus support.
• General Purpose — High ripple endurance designs: Suitable where sustained ripple current at elevated temperatures is a requirement, leveraging the 10,000‑hour 105°C endurance.
• General Purpose — Rugged snap‑in mounting: Intended for applications needing a secure radial snap‑in can and a compact footprint (L: 4.5 × D: 2.2 cm).

Unique Advantages

• Long operational life at elevated temperature: 10,000‑hour endurance at 105°C reduces the need for frequent capacitor replacement in high‑temperature applications.
• High voltage capability: 250 V rating enables use in higher‑voltage DC circuits without stacking multiple lower‑voltage parts.
• Measured ripple capability across frequency: Specified ripple current figures (1.3 A at 120 Hz; 1.95 A at 50 kHz) combined with the frequency coefficient table allow predictable derating for design calculations.
• Secure snap‑in mounting: Radial, snap‑in can simplifies installation in power assemblies and reduces mechanical stress on leads.
• Clear electrical parameters: Defined leakage current formula and ±20% capacitance tolerance provide verifiable parameters for BOM and reliability analyses.
• Regulatory compliance: RoHS conformity supports environmental and regulatory requirements for product shipments.

Why Choose LGR2E391MELZ45?

LGR2E391MELZ45 is positioned for designs that need robust bulk capacitance, a 250 V rating and proven long‑life ripple endurance at elevated temperatures. Its combination of 390 µF capacitance, rated ripple current characteristics and 10,000‑hour endurance at 105°C makes it suitable for engineers specifying long‑term reliability in demanding power circuitry.

This part is a practical choice for customers and designs that prioritize predictable electrical behavior, secure snap‑in mounting, and adherence to RoHS directives while minimizing maintenance cycles and replacement frequency over the product lifetime.

To request a quote, check availability, or discuss lead times and sample options for LGR2E391MELZ45, please submit an inquiry to sales or request a formal quote.