LAR2G681MELC45

The LAR2G681MELC45 is a polarized aluminum electrolytic capacitor in a radial, snap‑in can package designed for general‑purpose power applications. It provides 680 µF capacitance at a 400 V rating with ±20% tolerance and snap‑in mounting for secure installation.

Engineered for high‑temperature operation and reliable ripple handling, this Nichicon LAR series part withstands 2000 hours of rated ripple current at 105°C, incorporates measures to reduce short incidence under overvoltage, and is RoHS compliant.

Key Features

• Capacitance and Voltage — 680 µF nominal capacitance with a 400 V rated voltage and ±20% tolerance, suitable for higher‑voltage DC applications.
• High‑Temperature Endurance — Designed for operation up to 105°C with a specified 2000‑hour endurance at 105°C under rated ripple current.
• Robust Ripple Handling — Rated ripple current of 2.12 A at 120 Hz and 3.032 A at 50 kHz, supporting steady AC ripple in power circuits.
• Snap‑In Radial Can Package — Snap‑in terminal type and radial can package for secure PCB or chassis mounting and reliable mechanical retention.
• Overvoltage Safety Measures — Series design reduces short incidence when 1.5× rated voltage is applied; safety evaluation shows over 60% passing under specified overvoltage test conditions.
• Polarized Type — Polarized electrolytic capacitor for DC filtering and smoothing functions.
• RoHS Compliant — Conforms to RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Power supply filtering and smoothing — Use where 400 V DC filtering and rated ripple handling (2.12 A at 120 Hz, 3.032 A at 50 kHz) are required to stabilize DC rails.
• Industrial power electronics — Suitable for general‑purpose industrial power modules and assemblies that require operation at elevated temperatures up to 105°C.
• High‑voltage DC link capacitors — Applicable in designs needing a 400 V capacitive element with secure snap‑in mounting and long endurance under ripple stress.

Unique Advantages

• Long‑term high‑temperature reliability — Rated to withstand 2000 hours of rated ripple current at 105°C, providing predictable performance in demanding thermal environments.
• Measured ripple capability — Specified ripple current values at 120 Hz and 50 kHz allow designers to size the capacitor against real ripple conditions and frequency components.
• Safety‑oriented overvoltage behavior — Design features reduce short incidence when subjected to 1.5× rated voltage, improving system-level safety margins.
• Secure snap‑in mounting — Snap‑in terminal and radial can packaging offer straightforward mechanical integration for power assemblies and chassis mounting.
• Regulatory compliance — RoHS compliance supports use in regions with restricted substance requirements.

Why Choose LAR2G681MELC45?

The LAR2G681MELC45 delivers a balanced combination of high voltage capability, substantial capacitance, and high‑temperature endurance in a snap‑in radial package. Its specified ripple current ratings and 2000‑hour endurance at 105°C make it a durable choice for general‑purpose power systems that require stable DC filtering and robust thermal performance.

Ideal for engineers specifying capacitors for 400 V DC rails and applications requiring reliable ripple handling and safety‑minded overvoltage behavior, this Nichicon LAR series part offers clear, verifiable specifications to simplify component selection and system validation.

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