LGW2G271MELB35

The LGW2G271MELB35 is an aluminum electrolytic capacitor from Nichicon’s LGW series featuring a snap‑in terminal radial can and polarized construction. It delivers 270 µF at 400 V with high ripple capability and is specified for sustained operation at elevated temperature.

Designed for general‑purpose power applications, this part emphasizes high ripple current endurance and long life at 105°C, with RoHS compliance for environmental compatibility.

Key Features

• Capacitance & Voltage — 270 µF rated capacitance at 400 V provides bulk energy storage and smoothing for high‑voltage rails.
• High Ripple Current — Rated ripple current of 2.12 A at 120 Hz and 3.032 A at 50 kHz, combined with the LGW series design for high ripple performance.
• High‑Temperature Endurance — Specified to withstand 3000 hours of rated ripple current at 105°C when DC bias plus rated ripple current is applied.
• Operating Temperature Range — Rated for −25 °C to +105 °C (category temperature range for 400 V class).
• Electrical Loss & Leakage — Tangent of loss angle (tan δ) ≤ 0.15 (measured at 120 Hz, 20 °C); leakage current specified by I ≤ 3√(C·V) μA after 5 minutes at 20 °C.
• Low‑Temperature Impedance Characteristic — For the 400–450 V class, impedance ratio Z(−25 °C)/Z(+20 °C) is specified with a maximum of 8.
• Mechanical & Mounting — Snap‑in radial can package with dimensions approximately L: 3.5 cm × D: 3 cm and polarized terminals for secure PCB installation.
• Reliability & Shelf Life — Shelf life characterized at 105 °C for 1000 hours with post‑storage voltage treatment requirements; endurance limits cap change to within ±20% after life test.
• Regulatory — Compliant to the RoHS directive (2011/65/EU, (EU)2015/863).
• Identification — Marked with white printing on a black sleeve for easy visual identification.

Typical Applications

• General‑purpose power systems — Bulk storage and smoothing on high‑voltage DC rails where a 400 V, 270 µF polarized capacitor is required.
• Industrial equipment — Power conversion and filtering in equipment that requires sustained ripple endurance at elevated temperatures.
• High‑temperature environments — Systems operating up to 105 °C that need long‑life capacitors rated for continuous ripple stress.

Unique Advantages

• High ripple endurance: Rated ripple currents at multiple frequencies and a 3000‑hour life at 105 °C under rated ripple demonstrate suitability for continuous stress applications.
• High voltage rating: 400 V capability enables use on higher DC buses without series stacking.
• Thermal robustness: Specified performance across −25 °C to +105 °C supports designs with wide operating temperature ranges.
• Compact radial snap‑in package: Snap‑in mounting provides a reliable mechanical and electrical connection for chassis or PCB installation.
• Measurable electrical limits: Clear tan δ and leakage current specifications enable predictable design margins and verification during qualification.
• RoHS compliant: Meets contemporary environmental directive requirements for restricted substances.

Why Choose LGW2G271MELB35?

LGW2G271MELB35 from Nichicon’s LGW series is positioned for designs that require a polarized, high‑voltage aluminum electrolytic capacitor with proven ripple endurance at elevated temperatures. Its combination of 270 µF at 400 V, defined ripple current ratings across frequencies, and a 3000‑hour endurance at 105 °C provides a clear specification baseline for power supply, filtering, and energy‑storage applications.

This component suits engineers and procurement teams seeking a robust, RoHS‑compliant electrolytic solution for general‑purpose high‑voltage systems where long life under ripple stress and predictable electrical characteristics are important.

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