LAR2W271MELC30

The LAR2W271MELC30 from Nichicon is a snap-in terminal aluminum electrolytic capacitor rated at 450 V and 270 µF. It is a radial can, snap-in package (φ35 × 30 mm length) designed for general-purpose high-voltage applications where polarized bulk capacitance is required.

This part is specified for operation from −25 °C to +105 °C, provides measurable ripple current capability at both low and high frequencies, and is designed for extended endurance under elevated temperature and ripple conditions. It is RoHS compliant and includes features to reduce short incidence under specified overvoltage conditions.

Key Features

• Voltage and Capacitance — Rated at 450 V with 270 µF nominal capacitance (±20% tolerance).
• Snap-In Radial Can Package — φ35 × 30 mm radial can with snap-in terminals for PCB mounting.
• High-Temperature Endurance — Specified to withstand 2000 hours of rated ripple current application at 105 °C.
• Overvoltage Safety Design — Reduced incidence of shorting when exposed to 1.5× rated voltage; series test shows more than 60% of capacitors pass the overvoltage condition (rated voltage × 1.5 with limited current = 1 A) under the defined passing criteria.
• Operating Temperature Range — Rated for −25 °C to +105 °C operation.
• Ripple Current Capability — Specified ripple current: 1.23 A at 120 Hz and 1.759 A at 50 kHz for this part.
• Leakage Current Specification — Series specification: I ≤ 3√CV (µA) after 5 minutes at 20 °C (C: µF, V: V).
• RoHS Compliant — Conforms to RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General-purpose high-voltage circuits — Suitable where a 450 V polarized aluminum electrolytic capacitor with snap-in mounting is required.
• Power electronics assemblies — Appropriate for designs that require defined ripple current handling at elevated temperatures.
• Industrial and commercial equipment — Fits general-purpose roles in equipment that operate within −25 °C to +105 °C and require bulk capacitance.

Unique Advantages

• High-voltage bulk capacitance: 450 V and 270 µF provide substantial stored energy for high-voltage circuits.
• Designed for elevated-temperature ripple endurance: Withstands 2000 hours of rated ripple current at 105 °C, supporting long-term operation under thermal stress.
• Snap-in package for secure mounting: Radial, snap-in can simplifies mechanical retention on the board and supports through-hole assembly practices.
• Overvoltage resilience: Reduced short incidence under 1.5× rated voltage with validated passing behavior under limited-current test conditions.
• Measured ripple performance: Specified ripple current values at representative frequencies (1.23 A at 120 Hz, 1.759 A at 50 kHz) help assess thermal and lifetime loading.
• Regulatory compliance: RoHS conformity supports restricted substance requirements.

Why Choose LAR2W271MELC30?

The LAR2W271MELC30 is positioned for engineers and procurement seeking a high-voltage, snap-in aluminum electrolytic capacitor with defined endurance and ripple capability at elevated temperatures. Its combination of 450 V rating, 270 µF capacitance, 2000-hour endurance at 105 °C, and overvoltage safety characteristics make it a practical choice for general-purpose high-voltage applications where reliability under thermal and ripple stress is important.

This capacitor is appropriate for designs requiring polarized bulk capacitance in a radial snap-in form factor and where RoHS compliance is required. The documented ripple current figures and endurance specification provide clear, verifiable inputs for thermal and lifetime calculations.

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