LAKW6271MELC40ZB

The LAKW6271MELC40ZB is a snap‑in terminal aluminum electrolytic capacitor from Nichicon's LAK series, rated 270 µF at 420 V with a 105°C maximum operating temperature. Designed for general‑purpose power electronics, this component targets high‑voltage DC applications that require robust ripple handling and extended endurance under elevated temperature and bias conditions.

As part of the LAK family, the capacitor incorporates improved safety features for abnormally excessive voltage and supports an extended voltage range (200 V, 400 V, 420 V) appropriate for equipment operating in voltage‑fluctuating environments.

Key Features

• Capacitance & Voltage — 270 µF rated capacitance at 420 V for high‑voltage DC energy storage and filtering.
• High Temperature Endurance — Specified for operation from −25°C to +105°C with a life rating of 2000 hours at 105°C under D.C. bias plus rated ripple current.
• Ripple Current Capability — Supports 1.1 A (120 Hz) low‑frequency ripple and 1.265 A (10 kHz) high‑frequency ripple to handle AC components on DC rails.
• Leakage Current — Product leakage current specified at 1010 µA (after voltage application conditions as listed in the part data).
• Low Loss Angle — Tangent of loss angle (tan δ) specified at 0.20 max at 120 Hz, 20°C, providing predictable dissipation characteristics.
• Snap‑in Radial Can Package — Snap‑in terminals and a radial, can‑type package sized φ35 × 40L mm (L: 4.0 × D: 3.5 cm), suitable for secure panel or chassis mounting.
• Safety Design — Pressure relief vent and improved measures for abnormal voltage conditions as specified in the LAK series documentation.
• RoHS Compliant — Manufactured in compliance with RoHS directives.

Typical Applications

• Power supplies & converters — 420 V rating and defined ripple current make this capacitor suitable for DC‑link smoothing and bulk energy storage in high‑voltage power supply stages.
• Industrial equipment in fluctuating‑voltage environments — LAK series safety features and extended voltage options address systems exposed to variable line conditions.
• High‑voltage DC filtering — 270 µF capacitance with specified tan δ and ripple handling supports filtering tasks where stable dissipation and endurance are required.
• General‑purpose electronic equipment — Snap‑in mounting and robust temperature/endurance specifications suit a range of general power electronics uses.

Unique Advantages

• High‑voltage capability: 420 V nominal rating enables integration into higher‑voltage DC systems without up‑rating or cascading multiple components.
• Validated endurance at elevated temperature: 2000 hours at 105°C with rated ripple current offers predictable lifetime performance in thermally demanding designs.
• Dual‑frequency ripple performance: Specified ripple current at both 120 Hz and 10 kHz addresses low‑ and high‑frequency AC components on DC rails.
• Safety‑focused construction: Pressure relief vent and improved abnormal‑voltage measures reduce risk in environments prone to voltage excursions.
• Installer‑friendly package: Snap‑in radial can simplifies mechanical retention and replacement in power assemblies.
• Regulatory compliance: RoHS compliance supports designs targeting restricted‑substance requirements.

Why Choose LAKW6271MELC40ZB?

LAKW6271MELC40ZB combines a high 420 V rating, substantial 270 µF capacitance and defined ripple current capability with endurance proven at 105°C, making it a practical choice for designers of high‑voltage power electronics and equipment operating in fluctuating line conditions. Its snap‑in radial package and safety features provide a straightforward, serviceable option for systems that require reliable DC energy storage and filtering.

Manufactured by Nichicon and built on the LAK series specification set, this capacitor is suited for engineers seeking a verifiable balance of voltage capability, thermal endurance and safety considerations in general‑purpose and industrial power designs.

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