LAKW6331MELC45ZB

The LAKW6331MELC45ZB is an aluminum electrolytic capacitor in the Nichicon LAK series featuring a snap‑in terminal can and a 420 V rated voltage with 330 µF capacitance. It is designed for general‑purpose power applications, particularly equipment operating in areas with voltage fluctuations.

Key value propositions include high‑voltage capability, a wide operating temperature range up to 105°C, and endurance proven to withstand 2000 hours of rated ripple current at 105°C. The part is RoHS compliant.

Key Features

• Core Performance — 330 µF capacitance at a 420 V rated voltage provides energy storage and smoothing for high‑voltage rails and general power applications.
• High‑Temperature Endurance — Rated for operation from −25°C to 105°C and specified to withstand 2000 hours of rated ripple current at 105°C, delivering stable performance in elevated ambient conditions.
• Improved Safety Design — Built with enhanced safety features for abnormally excessive voltage; the pressure relief vent operates under abnormal conditions to avoid dangerous outcomes.
• Electrical Characteristics — Capacitance tolerance of −20% to +20%, leakage current after 5 minutes follows I ≤ 3√(C·V) µA (20°C), and tan δ specified at 0.20 max (120 Hz, 20°C).
• Package & Mounting — Radial, can‑type snap‑in package (snap‑in terminals) for secure board mounting and simplified assembly; dimensions L: 4.5 × D: 3.5 cm.
• Ripple Performance — Rated ripple current of 1.2 A at 120 Hz and 1.38 A at 100 kHz, supporting sustained AC stress within rated limits.
• Regulatory — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General‑purpose power supplies — Energy storage and smoothing in power supplies used in environments with voltage fluctuation.
• Industrial equipment — Bulk capacitance and ripple suppression where high DC voltages (up to 420 V) and elevated operating temperatures are encountered.
• Power conversion systems — DC link and filtering applications that require sustained ripple handling and thermal endurance.

Unique Advantages

• High‑voltage capability: 420 V rating enables use on high‑voltage rails without additional series components.
• Proven thermal endurance: Specified 2000 hours at 105°C under rated ripple current provides confidence for long‑term high‑temperature operation.
• Enhanced safety measures: Pressure relief vent and improved safety features help mitigate risks from abnormal overvoltage events.
• Robust ripple handling: Specified ripple currents at both low and high frequencies (120 Hz and 100 kHz) support a range of power‑conversion topologies.
• Installation‑friendly package: Snap‑in radial can simplifies mounting and mechanical retention on PCBs for high‑volume assembly.
• Regulatory compliance: RoHS conformity supports deployment in regions requiring restricted substance compliance.

Why Choose LAKW6331MELC45ZB?

The LAKW6331MELC45ZB combines a high 420 V rating and 330 µF capacitance with a snap‑in radial can package and thermal endurance validated at 105°C for 2000 hours under rated ripple conditions. Its design targets general‑purpose and industrial designs that face voltage fluctuations and require reliable energy storage and ripple suppression.

This part is suited to engineers specifying durable, high‑voltage aluminum electrolytic capacitors from the Nichicon LAK series where safety features, measurable endurance, and RoHS compliance are required for long‑term deployments.

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