LGX2H271MELC40

The LGX2H271MELC40 is a snap‑in terminal aluminum electrolytic capacitor from Nichicon’s LGX series, specified at 270 µF and 500 V. It is designed for general purpose power applications where a compact, high‑voltage capacitor with long life characteristics is required.

Well suited for rectifier circuits in general inverters and switching power supplies, the part combines 5000 hours endurance at 105°C with RoHS compliance for reliable operation in demanding thermal and electrical environments.

Key Features

• Core electricals — Rated capacitance 270 µF with a rated voltage of 500 V and tolerance ±20% (at 120 Hz, 20°C).
• Long‑life endurance — Endurance specified as 5000 hours at 105°C under DC bias plus rated ripple current, with defined limits for capacitance change, tan δ and leakage current after test.
• Operating temperature — Specified range from −25°C to +105°C for use in elevated temperature power systems.
• Mounting and package — Snap‑in terminal, radial can (snap‑in) package for secure PCB mounting in power assemblies; physical size L: 4 × D: 3.5 cm, seated height up to 1.575 inch.
• Ripple current capability — Rated ripple: 1.42 A at 120 Hz and 2.031 A at 50 kHz, supporting common rectifier and switching waveforms.
• Leakage current specification — Initial leakage current meets I ≤ 3√(C·V) µA after 5 minutes application of rated voltage at 20°C, enabling predictable power loss calculations.
• Regulatory — RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• General inverters (rectifier stages) — Provides energy storage and smoothing for rectifier circuits in inverter systems.
• Switching power supplies — Used for bulk filtering and ripple handling where a 500 V rating and extended high‑temperature life are required.
• General purpose power electronics — Suitable for a range of power modules and assemblies that require a compact, high‑voltage electrolytic capacitor.

Unique Advantages

• 5000‑hour high‑temperature endurance — Engineered to withstand 5000 hours of rated ripple at 105°C, giving design confidence for continuous‑duty power applications.
• High voltage and capacitance combination — 500 V rating with 270 µF capacitance supports higher DC bus voltages without increasing part count.
• Verified ripple performance — Published ripple current ratings at 120 Hz and 50 kHz allow accurate thermal and lifetime budgeting in power designs.
• Predictable leakage behavior — Leakage current bound by the I ≤ 3√(C·V) µA rule facilitates power loss and startup considerations.
• PCB‑friendly snap‑in package — Radial snap‑in can offers robust mechanical retention for through‑hole power assemblies.
• RoHS compliance — Meets current RoHS directives for environmentally conscious designs.

Why Choose LGX2H271MELC40?

The LGX2H271MELC40 targets engineers who need a compact, high‑voltage electrolytic capacitor with proven high‑temperature endurance. Its 500 V rating, 270 µF capacitance and specified ripple current values make it well matched to rectifier and bulk‑filtering roles in inverters and switching power supplies, while the 5000‑hour endurance at 105°C addresses long‑term reliability concerns.

Specified leakage and loss‑angle limits, together with a snap‑in radial package and defined physical dimensions, simplify BOM selection and mechanical integration for medium‑power industrial and power‑electronics designs. Backed by Nichicon’s LGX series specifications, this part is appropriate for projects that prioritize predictable electrical performance and sustained operation at elevated temperatures.

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