LLG2W181MELZ35

The LLG2W181MELZ35 is a snap-in terminal type aluminum electrolytic capacitor from Nichicon’s LLG series, offering 180 µF capacitance at a 450 V rating. Designed as one rank smaller in case size than the LLS series, it is specifically suited for equipment downsizing while delivering general-purpose high-voltage energy storage.

Key value propositions include a compact snap-in radial can package for secure mounting, RoHS compliance, and operational endurance in elevated-temperature environments typical of industrial power electronics.

Key Features

• Electrical Performance — 180 µF capacitance with ±20% tolerance and a rated voltage of 450 V; polarized design for DC energy storage and smoothing applications.
• Temperature and Endurance — Rated for operation from −25 °C to +85 °C (for 400–450 V range) with a specified endurance of 2000 hours at 85 °C under DC bias plus rated ripple current.
• Ripple Current Capability — Rated ripple currents of 1.3 A at 120 Hz and 1.859 A at 100 kHz, enabling use on both low- and high-frequency power rails within the stated limits.
• Leakage and Dissipation — Leakage current specified by the series formula I ≤ 3√(C·V) µA after 5 minutes at 20 °C; tangent of loss angle (tan δ) specified up to 0.20 at 450 V (measured at 120 Hz, 20 °C).
• Compact Snap‑in Package — Radial can, snap-in terminal type for secure PCB mounting; nominal size L: 3.5 × D: 2.2 cm, enabling space-efficient layouts.
• Regulatory Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863), supporting restricted substance requirements.

Typical Applications

• Industrial Power Supplies — Bulk energy storage and DC smoothing on high-voltage rails where a compact, snap-in aluminum capacitor is required.
• Power Conversion Equipment — DC link and filtering duties in inverters and converters that require a 450 V rated capacitor with defined ripple current capability.
• Uninterruptible Power Systems and Energy Storage — Energy buffering and ripple attenuation in systems operating up to +85 °C with a validated 2000‑hour endurance.
• General-Purpose High-Voltage Electronics — Applications requiring polarized, high-voltage capacitance in a downsized package for space-constrained designs.

Unique Advantages

• Space-saving form factor: One rank smaller case than LLS, enabling equipment downsizing and denser PCB layouts.
• High-voltage capability: 450 V rating supports high-voltage bus and DC-link applications without additional series stacking.
• Designed for elevated-temperature duty: 2000 hours endurance at 85 °C under rated conditions provides predictable life performance for thermal environments.
• Clear ripple specifications: Provided ripple current ratings at 120 Hz and 100 kHz allow designers to match capacitor selection to expected operating frequencies.
• Regulatory alignment: RoHS compliance simplifies material screening for regulated applications.
• Secure PCB mounting: Snap-in radial can package reduces mechanical stress on board-mounted high-voltage capacitors.

Why Choose LLG2W181MELZ35?

The LLG2W181MELZ35 combines a 450 V high-voltage rating with 180 µF capacitance in a compact snap-in can, offering designers a reliable option for DC smoothing and energy storage in space-constrained power electronic systems. Its specified ripple current ratings, leakage current formula, and endurance at 85 °C provide measurable parameters for design and lifetime calculations.

This part is well suited to engineers and procurement teams developing industrial power supplies, converters, and energy systems who need a RoHS-compliant, downsized aluminum electrolytic solution backed by the Nichicon LLG series specifications.

Request a quote or contact sales to discuss availability, lead times, and sample options for the LLG2W181MELZ35.