LAR2E681MELA40

The LAR2E681MELA40 is a Nichicon LAR series aluminum electrolytic capacitor in a snap‑in terminal, radial can package. It provides 680 µF capacitance at a 250 V rated voltage and is specified for general‑purpose power circuit use.

Designed for robust operation up to 105°C, this part withstands 2000 hours of rated ripple current at 105°C and incorporates measures to reduce short incidence under overvoltage conditions (rated voltage × 1.5). The capacitor is RoHS compliant.

Key Features

• Capacitance & Voltage — 680 µF nominal capacitance with a 250 V rated voltage and ±20% tolerance at 120 Hz, 20°C.
• Thermal endurance — Rated for operation from –40°C to +105°C with specified endurance of 2000 hours at 105°C under D.C. bias plus rated ripple current.
• Ripple current performance — Rated ripple currents include 1.7 A at 120 Hz and 2.55 A at 50 kHz; frequency coefficients in the datasheet apply for other frequencies.
• Leakage and dissipation — Leakage current specified as I ≤ 3√CV (µA) after 5 minutes at 20°C; tangent of loss angle (tan δ) max 0.15 for 200–400 V at 120 Hz, 20°C.
• Safety under overvoltage — Reduced incidence of shorting when subjected to 1.5× rated voltage; safety performance tests described in the LAR series datasheet.
• Package & mounting — Radial, snap‑in can package for snap‑in board mounting; physical size approximately 25 mm diameter × 40 mm length (D: 2.5 cm × L: 4 cm).
• Polarized design — Polarized aluminum electrolytic capacitor suitable for typical DC smoothing and energy storage roles.
• Environmental compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General‑purpose power circuits — Bulk smoothing and energy storage in circuits that require a 250 V rated capacitor with substantial capacitance.
• High‑temperature environments — Applications requiring sustained performance at elevated temperatures, supported by 2000 hours endurance at 105°C.
• Board‑level snap‑in mounting — Secure radial snap‑in can for designs preferring snap‑in terminals for board installation.
• Designs requiring overvoltage resilience — Circuits where reduced short incidence under 1.5× rated voltage is a design consideration, per the LAR series safety performance.

Unique Advantages

• Extended high‑temperature endurance: Specified to withstand 2000 hours of rated ripple current at 105°C, supporting long‑term operation in hot environments.
• High energy capacity at 250 V: 680 µF provides significant bulk capacitance for smoothing and energy storage at elevated voltages.
• Measured ripple performance: Explicit ripple current ratings at 120 Hz and 50 kHz (1.7 A and 2.55 A respectively) with frequency coefficients provided in the datasheet.
• Designed for safer overvoltage behavior: The LAR series includes measures that reduce short incidence when overvoltage (rated × 1.5) is applied, with defined pass criteria in testing.
• Practical snap‑in package: Radial, snap‑in can simplifies board attachment where robust mechanical retention is needed.
• RoHS compliant: Meets applicable RoHS directives listed in the product data.

Why Choose LAR2E681MELA40?

The LAR2E681MELA40 combines a high 680 µF capacitance with a 250 V rating in a snap‑in aluminum can engineered for 105°C operation and 2000‑hour ripple endurance. Its specified leakage, tan δ, and ripple current ratings offer engineers clear, verifiable parameters for power supply smoothing and energy storage tasks.

Manufactured by Nichicon and part of the LAR series, this capacitor is suited to designs requiring dependable high‑voltage bulk capacitance, elevated temperature endurance, and snap‑in mounting. Its documented overvoltage safety performance and RoHS compliance support long‑term reliability and regulatory alignment.

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