LAR2W331MELB40

The LAR2W331MELB40 is a snap‑in terminal aluminum electrolytic capacitor designed for general purpose power applications requiring high voltage handling and elevated temperature endurance. It combines a 330 µF capacitance with a 450 V rated voltage, a polarized can‑style snap‑in package, and RoHS compliance.

Engineered to withstand sustained ripple and high operating temperatures, this part is suitable for applications that demand reliable DC filtering and energy handling up to 105 °C with a documented 2000‑hour endurance under rated ripple conditions.

Key Features

• High voltage, high capacitance: 330 µF nominal capacitance at a 450 V rated voltage for high‑voltage smoothing and energy storage in general‑purpose equipment.
• 105 °C endurance: Specified operating temperature up to 105 °C with a guaranteed 2000 hours of endurance when D.C. bias plus rated ripple current is applied at 105 °C.
• Snap‑in mounting (radial can): Snap‑in terminal package for secure board mounting and mechanical stability in panel or chassis assemblies.
• Ripple current capability: Rated ripple current of 1.38 A at 120 Hz and 1.973 A at 50 kHz, enabling effective filtering across low and higher frequency ripple conditions.
• Safety and overvoltage behavior: Designed to reduce incidence of shorting under overvoltage (rated ×1.5); the series demonstrates a controlled safety performance under limited overvoltage conditions.
• Electrical characteristics: ±20% capacitance tolerance, polarized construction, leakage current specified as I ≤ 3√(C·V) µA (after 5 minutes at 20 °C), and tan δ max 0.20 (450 V, measured at 120 Hz, 20 °C).
• Compact footprint: Physical dimensions L: 4 cm × D: 3 cm with a seated height up to 1.575 inches, suitable for space‑constrained power assemblies.
• RoHS compliant: Meets RoHS directive requirements (2011/65/EU, (EU)2015/863) for restricted substances.

Typical Applications

• High‑voltage power supplies: Bulk smoothing and filtering where 450 V rating and substantial capacitance reduce ripple and stabilize DC rails.
• Industrial power equipment: Energy storage and decoupling in general‑purpose industrial electronics operating at elevated temperatures.
• Power conversion stages: DC link or filtering roles in converters and inverters that require robust ripple handling and high‑temperature endurance.

Unique Advantages

• Designed for elevated temperatures: 105 °C permissible operating temperature with verified 2000‑hour ripple endurance improves reliability in hot environments.
• Measured ripple performance: Specified ripple current values at both 120 Hz and 50 kHz provide clear guidance for thermal and lifetime calculations in design.
• Snap‑in terminal convenience: Rapid, secure mounting reduces assembly complexity and improves mechanical retention compared with loose‑lead alternatives.
• Overvoltage safety behavior: Engineered to limit short incidence under 1.5× rated voltage with defined passing criteria for safer fault responses.
• Clear electrical limits: Leakage current and tan δ specifications allow predictable performance validation during qualification and production testing.
• Regulatory compliance: RoHS conformity supports deployment in regions with restricted substances requirements.

Why Choose LAR2W331MELB40?

The LAR2W331MELB40 offers a balance of high voltage rating, substantial capacitance, and elevated temperature endurance suited for general‑purpose power electronics that demand predictable ripple handling and safety‑oriented behavior under stress. Its snap‑in can package simplifies assembly while providing the electrical performance data engineers need for thermal and lifetime planning.

This part is a practical choice for designers and procurement teams specifying capacitors for high‑voltage filtering, DC link support, and industrial power modules where RoHS compliance, documented ripple capability, and defined overvoltage characteristics are required.

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