LAR2W271MELA50

The LAR2W271MELA50 is a snap‑in terminal aluminum electrolytic capacitor offering 270 µF capacitance at a 450 V rated voltage. It is a polar, radial can (snap‑in) type designed for general‑purpose applications that require high‑voltage capability and high‑temperature endurance.

Key value is long endurance under elevated temperature and rated ripple conditions, combined with a snap‑in mounting style for robust mechanical retention in power assemblies.

Key Features

• Capacitance & Voltage — 270 µF nominal capacitance with a 450 V rated voltage and ±20% tolerance, suitable for high‑voltage polarized applications.
• Snap‑in Terminal Package — Radial, can‑style snap‑in mounting for secure installation in power modules and assemblies.
• High‑temperature Endurance — Specified to withstand 2000 hours of rated ripple current at 105°C, with post‑test capacitance change within ±20%.
• Ripple Current Performance — Rated ripple current of 1.23 A at 120 Hz and 1.759 A at 50 kHz; frequency coefficients provided for higher frequencies in the LAR series datasheet.
• Overvoltage Safety Design — Series design reduces incidence of short when subjected to overvoltage at rated voltage × 1.5 (limited current conditions), with the pressure relief vent behavior defined in the series specification.
• Operating Temperature Range — Rated for operation from −25°C to +105°C for 400–450 V versions, aligning temperature capability with the rated voltage.
• Controlled Leakage — Leakage current conforms to I ≤ 3√(CV) µA after 5 minutes’ application of rated voltage at 20°C, per series specification.
• RoHS Compliance — Compliant with RoHS directive (2011/65/EU, (EU)2015/863).
• Physical Dimensions — Compact radial can: approximately 5.0 cm length × 2.5 cm diameter (25 mm diameter, 50 mm length).

Typical Applications

• General‑purpose power assemblies — Use where a polarized 450 V, 270 µF capacitor with snap‑in mounting is required for high‑voltage circuitry.
• High‑temperature environments — Suitable for circuits that must maintain performance at up to 105°C, backed by a 2000‑hour endurance rating at that temperature.
• Ripple current handling — Applied in systems that require defined ripple current capability at common frequencies (e.g., 120 Hz and 50 kHz) as specified.
• RoHS‑compliant designs — For projects that require restriction of hazardous substances compliance.

Unique Advantages

• High‑voltage capability: 450 V rating provides headroom for higher‑voltage power circuits without additional series components.
• Long endurance at elevated temperature: 2000 hours at 105°C under rated ripple current supports reliable, sustained operation in hot environments.
• Snap‑in mechanical retention: Snap‑in terminals simplify assembly and provide secure mounting for chassis or board‑level power modules.
• Defined ripple performance: Published ripple current values at 120 Hz and 50 kHz allow predictable thermal and lifetime calculations.
• Overvoltage safety consideration: Series design reduces short incidence under overvoltage (rated × 1.5) and specifies pressure relief behavior for safer failure modes.
• Traceable electrical limits: Leakage current formula and impedance/temperature ratios are provided in the series specification for accurate design margining.

Why Choose LAR2W271MELA50?

The LAR2W271MELA50 positions itself as a reliable, high‑voltage electrolytic solution for general‑purpose power designs that require a polarized 270 µF capacitor with snap‑in mounting. Its combination of 450 V rating, high‑temperature endurance at 105°C, and defined ripple current performance make it appropriate for applications where sustained thermal and electrical stress must be managed.

This part is well suited to designers seeking measurable performance characteristics (endurance, leakage, ripple ratings) and a RoHS‑compliant component from a recognized electrolytic capacitor series with documented safety behavior under overvoltage conditions.

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