LAR2G391MELC30

The LAR2G391MELC30 from Nichicon is a snap‑in terminal aluminum electrolytic capacitor offering 390 µF capacitance at a 400 V rating. It is designed as a general‑purpose, high‑voltage electrolytic solution with snap‑in mounting for secure PCB installation.

Key value propositions include elevated temperature endurance up to 105°C, proven ripple‑current capability, and built‑in safety considerations for overvoltage conditions—attributes valuable to designers of high‑voltage, general‑purpose power equipment.

Key Features

• Capacitance & Voltage: 390 µF nominal capacitance at a 400 V rated voltage, suitable for high‑voltage DC applications within the LAR series range.
• Snap‑in Can Package: Radial, can style with snap‑in terminals for robust mechanical retention on the PCB and straightforward assembly.
• High‑Temperature Endurance: Rated for operation up to 105°C and specified to withstand 2000 hours of rated ripple current at 105°C.
• Ripple Current Performance: Specified ripple current of 1.55 A at 120 Hz and 2.216 A at 50 kHz, with frequency coefficients defined for higher frequencies in the LAR series.
• Permissible Overvoltage & Safety: Designed for permissible overvoltage conditions; series safety testing shows reduced short incidence when 1.5× rated voltage (with limited current) is applied.
• Electrical Loss and Leakage: Tangent of loss angle (tan δ) max. 0.15 at 120 Hz and 20°C for 200–400 V ratings; leakage current meets I ≤ 3√(C·V) µA after 5 minutes at 20°C (series specification).
• Operating Temperature Range: Rated for −25°C to +105°C for the 400 V class.
• RoHS Compliance: Compliant to the RoHS directive (2011/65/EU, (EU)2015/863).
• Compact Footprint: Can dimensions approximately L: 3.0 cm × D: 3.5 cm with a seated height reference of 1.181 inches (manufacturer dimensional data available in series documentation).

Typical Applications

• General‑purpose power equipment: Acts as a high‑voltage bulk capacitor for general‑purpose designs that require 390 µF at 400 V with elevated temperature endurance.
• Power filtering and smoothing: Provides ripple current handling and capacitance for smoothing DC rails in high‑voltage power assemblies.
• Industrial electronics: Suitable where snap‑in mounting and long‑life performance at up to 105°C are required for robust operation.

Unique Advantages

• Long‑term thermal reliability: Specified endurance of 2000 hours at 105°C under rated ripple conditions supports sustained performance in hot environments.
• Defined safety behavior under overvoltage: Series testing for 1.5× rated voltage demonstrates reduced incidence of shorting and defined vent behavior, enhancing application safety.
• Measurable ripple capability: Published ripple current specifications at 120 Hz and 50 kHz allow predictable thermal and ripple design margins.
• Consistent electrical characteristics: Series limits for tan δ and leakage current (I ≤ 3√CV µA) help ensure predictable behavior after voltage application and over life tests.
• RoHS compliant supply: Meets current RoHS directives for lead‑free manufacturing and compliance requirements.

Why Choose LAR2G391MELC30?

The LAR2G391MELC30 combines high‑voltage capability (400 V) with substantial capacitance (390 µF) in a snap‑in aluminum electrolytic package engineered for elevated temperatures. Its combination of endurance at 105°C, defined ripple current ratings, and series safety testing for overvoltage events makes it suitable for designers seeking a reliable, general‑purpose high‑voltage electrolytic capacitor.

This part is well suited to engineers and procurement teams working on high‑voltage power assemblies, industrial electronics, and general‑purpose systems that require documented endurance, predictable leakage and loss characteristics, and RoHS compliance.

Request a quote or contact sales to discuss availability, pricing, and how the LAR2G391MELC30 can fit into your design requirements.