LLG2G391MELB30

The LLG2G391MELB30 from Nichicon is a snap-in terminal aluminum electrolytic capacitor in the LLG series designed for general-purpose use. It provides 390 µF capacitance at a 400 V rating in a compact φ30 × 30L can with snap-in mounting for robust board retention.

Targeted at applications where compact size and reliable power filtering are required, this RoHS-compliant part combines high working voltage, defined ripple handling, and a 2000-hour endurance at 85°C to support volume production and equipment downsizing.

Key Features

• Capacitance and Voltage — 390 µF nominal capacitance rated at 400 V for energy storage and smoothing in high-voltage circuits.
• Compact Snap-in Package — Radial, can-type snap-in mounting (φ30 × 30L) provides secure mechanical attachment for through-hole assemblies and simplified insertion for production.
• Temperature and Endurance — Operating temperature range of −25°C to +85°C (for 400 V rating) with endurance specified as 2000 hours at 85°C under DC bias plus rated ripple current.
• Ripple Current Performance — Rated ripple current of 1.9 A at 120 Hz and 2.717 A at 100 kHz to support AC ripple handling across low and high frequencies.
• Polarized Electrolytic — Polarized device with capacitance tolerance of −20% to +20% (measured at 120 Hz, 20°C).
• Electrical Characterization — Leakage current specified by I ≤ 3√(C·V) µA after 5 minutes’ application of rated voltage at 20°C; tan δ max 0.15 for rated voltages up to 400 V (measured at 120 Hz, 20°C).
• Low-Temperature Stability — Impedance ratio Z(−25°C)/Z(+20°C) up to 8 at the 400 V rating, giving defined low-temperature behavior for design margin.
• Mass Production Packaging — Supplied in tray packing for efficient handling in high-volume manufacturing.
• RoHS Compliant — Meets applicable RoHS requirements.
• Identification — Marked with white lettering on a black sleeve for clear polarity and part identification.

Typical Applications

• General-Purpose Electronic Equipment — Provides bulk energy storage and smoothing in general-purpose circuits where a 400 V rated electrolytic is required.
• Equipment Downsizing — One-rank-smaller case sizing than LLS makes this part suited for designs targeting reduced board area and more compact assemblies.
• High-Volume Production Builds — Tray packing and snap-in mounting support automated handling and reliable assembly in mass-production environments.

Unique Advantages

• High-Voltage Capability: 400 V rating enables use in higher-voltage power circuits without stepping to larger packages.
• Defined Endurance: 2000 hours at 85°C under rated conditions provides a measurable reliability baseline for thermal and lifetime planning.
• Frequency-Scaled Ripple Performance: Specified ripple currents at both 120 Hz (1.9 A) and 100 kHz (2.717 A) support designs that must manage ripple across a range of frequencies.
• Predictable Leakage and Loss: Leakage current bounded by I ≤ 3√(C·V) µA and tan δ ≤ 0.15 (for up to 400 V) aid in system-level loss and standby calculations.
• Compact, Robust Mounting: Snap-in radial can package combines space savings with secure mechanical retention for through-hole assemblies.
• Production-Friendly Packaging: Tray packing eases handling in automated assembly and supports consistent throughput in manufacturing lines.

Why Choose LLG2G391MELB30?

The LLG2G391MELB30 delivers a balance of high-voltage performance, compact snap-in packaging, and defined endurance characteristics that make it suitable for designers seeking reliable bulk capacitance in constrained assemblies. Its specified ripple handling at both low and high frequencies, measurable leakage and dissipation parameters, and RoHS compliance provide the data points needed for engineering validation and production planning.

This part is appropriate for general-purpose designs where equipment downsizing and repeatable manufacturing are priorities, offering predictable electrical behavior and assembly-friendly form factor backed by Nichicon’s LLG series specifications.

Request a quote or submit an inquiry to our sales team to discuss pricing, lead times, and volume availability for LLG2G391MELB30.