LGNW6271MELB30

The LGNW6271MELB30 is a snap‑in terminal aluminum electrolytic capacitor from Nichicon’s LGN series, rated 420 V with a nominal capacitance of 270 µF. It is designed for general‑purpose high‑voltage power applications where a compact, high‑temperature capable smoothing or energy‑storage capacitor is required.

Key value comes from its snap‑in radial can package that is one rank smaller than the LGU series, RoHS compliance, and endurance proven under elevated temperature and ripple conditions.

Key Features

• Electrical rating — 270 µF nominal capacitance at 420 VDC with capacitance tolerance of ±20%.
• High‑temperature endurance — Specified to withstand 3000 hours application of rated ripple current at 105°C, supporting long‑term operation in elevated ambient conditions.
• Ripple current performance — Rated ripple current of 1.25 A at 120 Hz and 1.788 A at 100 kHz, enabling reliable AC ripple handling on high‑voltage rails.
• Operating temperature — Rated for −25°C to +105°C for the 350–600 V category, matching the 420 V rating.
• Package and mounting — Radial, can snap‑in construction with compact footprint (approx. L: 3 × D: 3 cm) and reduced case size relative to LGU series.
• Electrical characteristics — Leakage current specified by I ≤ 3/√C (µA) after 5 minutes at 20°C; tangent of loss angle (tan δ) max 0.15 for rated voltages up to 420 V (measured at 120 Hz, 20°C).
• Regulatory — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).
• Polarized design — Intended for DC applications where polarized capacitance is required.

Typical Applications

• High‑voltage power supplies — Smoothing and bulk energy storage on 420 V rails for industrial and commercial power supplies.
• DC link and inverter circuits — Energy buffering and ripple current handling in inverter and converter DC link stages.
• Uninterruptible power supplies (UPS) — Bulk capacitance for backup and power‑conditioning modules operating at elevated temperatures.
• Industrial power electronics — General‑purpose use in motor drives, converters, and other equipment requiring compact high‑voltage capacitors.

Unique Advantages

• Compact snap‑in form factor — One rank smaller case size than the LGU series provides space savings on the PCB without sacrificing rated voltage or capacitance.
• Proven high‑temperature endurance — 3000 hours at 105°C with rated ripple current applied means designers can plan for sustained elevated‑temperature operation.
• Defined ripple capability — Explicit ripple current ratings at 120 Hz and 100 kHz let engineers size thermal and cooling margins accurately.
• Predictable electrical behavior — Clear leakage current and tan δ limits provide measurable criteria for design verification and quality control.
• RoHS compliant — Meets applicable EU restrictions on hazardous substances, supporting regulatory and environmental requirements.

Why Choose LGNW6271MELB30?

The LGNW6271MELB30 combines a high 420 V rating with 270 µF capacitance in a compact snap‑in aluminum electrolytic package optimized for sustained operation at up to 105°C. Its documented endurance (3000 hours at 105°C under rated ripple) and specified ripple current values make it a straightforward choice for designers needing reliable bulk capacitance and ripple handling on high‑voltage rails.

This part is suited to engineers and procurement teams building power supplies, inverter DC links, UPS systems, and industrial power electronics who require verifiable performance, compact packaging, and RoHS compliance from a Nichicon LGN series component.

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