LAKW6331MELC45

The LAKW6331MELC45 is a snap-in terminal aluminum electrolytic capacitor in Nichicon’s LAK series, offering 330 µF capacitance at a 420 V rating. It is designed for general-purpose power applications where a high-voltage, high-temperature-capable electrolytic is required.

Key value propositions include extended voltage options across the LAK series (200 V, 400 V and 420 V), endurance under sustained ripple at elevated temperature, and improved safety measures for abnormal over-voltage conditions. The part is RoHS compliant.

Key Features

• Electrical Performance — 330 µF capacitance at 420 V with tolerance ±20%; designed for predictable filtering and energy storage on high-voltage DC rails.
• Ripple Current Capability — Rated ripple current of 1.2 A at 120 Hz and 1.38 A at 10 kHz, supporting continuous ripple handling in power applications.
• Temperature & Endurance — Operating range −25 °C to +105 °C; endurance demonstrated as withstanding 2000 hours of rated ripple current at 105 °C with specified post-test limits on capacitance, tan δ and leakage.
• Safety & Reliability — Improved safety features for abnormally excessive voltage; pressure relief vent designed to operate without hazardous ignition or dispersion. Series safety tests define limited DC current behavior under high-voltage test conditions.
• Electrical Characteristics — Leakage current specified by I ≤ 3√CV (µA) after 5 minutes at 20 °C; tan δ ≤ 0.20 at 120 Hz, 20 °C, enabling predictable loss and dissipation planning.
• Package & Mounting — Radial can with snap-in terminals for robust board mounting and straightforward mechanical retention.
• Environmental Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial power supplies — Bulk smoothing and DC bus support in equipment that experiences voltage fluctuation, leveraging the 420 V rating and high ripple endurance.
• Inverters and UPS systems — Energy storage and ripple suppression on high-voltage DC links where sustained ripple and elevated temperatures are expected.
• Motor drives and power converters — DC link and smoothing capacitor for drives requiring high-voltage capacitance and long-term stability at up to 105 °C.
• Commercial power equipment — General-purpose high-voltage filtering where safety under abnormal voltage conditions is a design consideration.

Unique Advantages

• High-temperature endurance: Specified to withstand 2000 hours of rated ripple current at 105 °C, supporting reliability in elevated-temperature environments.
• High-voltage capability: Part of a series with extended voltage options (200 V, 400 V and 420 V); this SKU is rated for 420 V for high-voltage DC applications.
• Measured ripple performance: Clear ripple current ratings at both 120 Hz and 10 kHz enable accurate thermal and lifetime calculations for power designs.
• Safety-tested design: Pressure relief vent and series-level limited DC current test data (for 420 V, capacitors ≥220 µF tested with limited DC current up to 7 A under specified test voltages) aid risk management for abnormal over-voltage events.
• Predictable electrical behavior: Defined limits for leakage current (I ≤ 3√CV) and tan δ (≤ 0.20) provide verifiable parameters for circuit simulations and design margins.
• RoHS compliant: Meets current RoHS requirements, supporting regulatory and environmental expectations.

Why Choose LAKW6331MELC45?

LAKW6331MELC45 is positioned for designs that require a high-voltage, high-temperature-capable electrolytic with verified endurance and safety attributes. Its combination of 330 µF at 420 V, specified ripple current ratings, and series safety testing makes it suitable for robust power-supply and DC-link applications in equipment exposed to voltage fluctuations.

Engineers and procurement teams looking for a proven, RoHS-compliant snap-in aluminum electrolytic with clear electrical and reliability data will find the LAKW6331MELC45 a practical choice for reducing risk in high-voltage, high-temperature environments.

If you’d like pricing, availability, or an application evaluation, request a quote or submit an RFQ to start the conversation with product support and fulfillment.