LGN2G391MELB40

The LGN2G391MELB40 is a Nichicon LGN-series snap-in aluminum electrolytic capacitor designed for general-purpose electronic equipment. It provides 390 µF capacitance at a 400 V rating in a compact snap-in can package suitable for applications that require high-voltage bulk capacitance with robust ripple handling.

Key value attributes include a 105°C rated endurance (3000 hours), high ripple-current capability across low and high frequencies, and a compact φ30 × 40 mm can size with tray packing for PCB assembly.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance rated at 400 V for high-voltage DC applications.
• Capacitance Tolerance — ±20% tolerance (–20% to +20%) at 120 Hz, 20°C for predictable sizing in designs.
• High-temperature Endurance — Rated for 3000 hours at 105°C under rated ripple current, supporting long-term operation at elevated temperatures.
• Ripple Current Performance — Low-frequency ripple current of 1.55 A at 120 Hz and high-frequency ripple current of 2.216 A at 100 kHz, enabling effective AC filtering and energy buffering across frequency ranges.
• Leakage and Dissipation — Leakage current specified as 1180 µA and tangent of loss angle (tan δ) max 0.15 (measured at 20°C, 120 Hz), enabling predictable loss and leakage behavior.
• Operating Temperature — Rated for operation from –25°C to +105°C, matching the LGN series’ high-temperature capability for 350–600 V classes and related parts.
• Package & Mounting — Snap-in radial can (φ30 × 40 mm) provides secure PCB mounting; supplied in tray packing for streamlined assembly. The LGN series is offered as a smaller-sized option relative to LGU series designs.
• Compliance & Availability — RoHS compliant and in mass production for immediate sourcing.

Typical Applications

• General-purpose power systems — Provides bulk capacitance and DC link support where a 400 V, 390 µF snap-in capacitor is required.
• Industrial and commercial electronics — Suited to equipment designs that demand high-voltage smoothing with 105°C endurance.
• Power filtering and energy buffering — Handles rated ripple current at both low and high frequencies to support filtering duties in power stages.

Unique Advantages

• High-temperature reliability: 3000-hour endurance at 105°C under rated ripple current reduces maintenance and replacement frequency in hot environments.
• Broad ripple capability: Specified ripple currents at 120 Hz and 100 kHz provide measurable performance for both low- and high-frequency filtering requirements.
• Compact snap-in can: φ30 × 40 mm radial can with snap-in terminals simplifies mounting and saves board space compared with larger can options.
• Predictable electrical characteristics: Defined tan δ (0.15 max at 20°C/120 Hz) and specified leakage current (1180 µA) help with thermal and leakage budgeting in design.
• Production-ready supply: Tray packing and mass production status support scalable procurement and assembly processes.
• RoHS compliant: Conforms to regulatory requirements for restricted substances.

Why Choose LGN2G391MELB40?

LGN2G391MELB40 delivers a balance of high-voltage capacitance, elevated temperature endurance, and robust ripple handling in a compact snap-in can. Its defined electrical characteristics—including capacitance, tan δ, leakage current, and ripple specifications—make it suitable for engineers who need verifiable performance data for high-voltage, high-temperature designs.

This part is ideal for design teams and procurement organizations specifying general-purpose, high-voltage electrolytic capacitance with predictable lifetime and assembly-ready packaging. Backed by Nichicon’s LGN-series specifications and RoHS compliance, the LGN2G391MELB40 supports reliable deployment and straightforward sourcing for continued production needs.

Request a quote or submit an inquiry for pricing and availability of LGN2G391MELB40 to discuss lead times, packaging options, and technical support for your project.