LLG2G181MELZ30

The LLG2G181MELZ30 from Nichicon is a snap-in terminal aluminum electrolytic capacitor in the LLG series, designed for general-purpose power applications. It delivers 180 µF at a 400 V rated voltage in a compact, radial can snap-in package that is one rank smaller than the LLS series, making it suited for equipment downsizing.

Key value propositions include a compact footprint (approx. 3 × 2.2 cm), RoHS compliance, and endurance specified for 2000 hours at 85 °C under rated conditions—providing predictable performance for designers targeting compact, high-voltage capacitor solutions.

Key Features

• Rated Capacitance & Voltage — 180 µF capacitance at a 400 V rated voltage for high-voltage energy storage and smoothing tasks.
• Compact Snap-in Package — Radial, can-type snap-in mounting for secure PCB installation; one rank smaller case size than LLS to support equipment downsizing.
• Thermal and Endurance Specs — Operating temperature range −25 °C to +85 °C with an endurance rating of 2000 hours at 85 °C (D.C. bias plus rated ripple current applied).
• Ripple Current Ratings — Rated ripple current of 1.16 A at 120 Hz and 1.659 A at 100 kHz, enabling predictable ripple handling across low and high frequencies.
• Leakage Current — Leakage specified as I ≤ 3√(C·V) μA after 5 minutes’ application of rated voltage at 20 °C, providing a verifiable leakage limit based on capacitance and voltage.
• Impedance & Loss Characteristics — Tangent of loss angle (tan δ) max 0.15 at rated voltages up to 400 V (measured at 120 Hz, 20 °C); impedance at −25 °C is specified relative to +20 °C (Z(−25 °C)/Z(+20 °C) ≤ 8 for 400 V).
• Physical Dimensions & Tolerance — Approximate size L: 3 × D: 2.2 cm, tolerance ±20%, and maximum seated height 1.181 inch (explicit mechanical constraints available in the LLG datasheet).
• RoHS Compliance — Compliant with RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General-Purpose Power Equipment — Used where a compact, 400 V-rated snap-in electrolytic capacitor is required for energy storage and smoothing functions.
• Equipment Downsizing Projects — The one-rank-smaller case size compared to LLS supports reduced enclosure and board space without changing capacitor family.
• Industrial and Commercial Electronics — Appropriate for general-purpose roles in systems that require a verified endurance of 2000 hours at 85 °C and known ripple current handling.

Unique Advantages

• Space-Saving Form Factor: One rank smaller case than LLS enables more compact assemblies and eases mechanical packaging constraints.
• High-Voltage Capability: 400 V rating provides headroom for higher-voltage power stages while maintaining a compact footprint.
• Predictable Endurance: 2000-hour endurance at 85 °C under rated conditions gives a clear reliability expectation for lifecycle planning.
• Measured Ripple Performance: Specified ripple currents at both 120 Hz and 100 kHz allow designers to evaluate behavior across switching and line frequencies.
• Verifiable Leakage Limit: Leakage current defined as I ≤ 3√(C·V) μA after 5 minutes at 20 °C provides an explicit acceptance criterion for leakage testing.
• Regulatory Compliance: RoHS conformity simplifies regulatory assessment for global product deployment.

Why Choose LLG2G181MELZ30?

LLG2G181MELZ30 positions itself as a compact, 400 V aluminum electrolytic capacitor option within Nichicon’s LLG series, offering designers a predictable combination of capacitance (180 µF), specified ripple ratings, and a defined endurance profile (2000 h at 85 °C). Its snap-in radial can and reduced case size are practical for teams optimizing PCB layout and enclosure volume without changing capacitor family strategies.

This part is well suited to design and procurement teams looking for a RoHS-compliant, general-purpose high-voltage electrolytic capacitor with clear electrical and mechanical specifications for integration into industrial and commercial power systems.

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