LLG2G391MELZ50

The LLG2G391MELZ50 is a snap-in terminal aluminum electrolytic capacitor from Nichicon’s LLG series. It delivers 390 µF capacitance at a 400 V rating in a smaller-sized, snap-in radial can designed for general-purpose power electronics.

Engineered for elevated-voltage smoothing and bulk energy functions, this part combines a compact φ22 × 50 mm package with verified ripple handling, leakage performance, and a 2000-hour endurance at 85°C for robust operation in industrial and power-supply applications.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance at 400 V provides substantial bulk energy storage for high-voltage circuits.
• Tolerance & Loss — ±20% capacitance tolerance and a maximum tan δ of 0.15 (measured at 20°C, 120 Hz), enabling predictable filtering and decoupling performance.
• Ripple Current Capability — 1.9 A low-frequency ripple current at 120 Hz and 2.717 A high-frequency ripple current at 100 kHz to support both mains-frequency and switching applications.
• Leakage Current — Specified leakage current of 1180 µA, suitable for high-voltage DC circuits where controlled leakage is required.
• Endurance & Temperature Range — Rated for 2000 hours at 85°C with an operating temperature range of −25°C to +85°C, validated by the LLG series endurance specifications.
• Package & Mounting — Snap-in terminal, radial can (φ22 × 50 mm) for secure PCB mounting and high-current trace routing; supplied in tray packing for production handling.
• Regulatory Compliance — RoHS compliant as noted for the LLG series.

Typical Applications

• General-purpose power electronics — Bulk energy storage and smoothing in high-voltage DC circuits where a 400 V rating and 390 µF capacitance are required.
• Power supplies — Input filtering and DC link support leveraging the capacitor’s high ripple-current ratings at both low and high frequencies.
• Industrial equipment — High-voltage filtering and energy buffering in industrial power modules operating within −25°C to +85°C.

Unique Advantages

• High-voltage capability: 400 V rating enables use in elevated-voltage designs without series stacking.
• Dual-frequency ripple handling: Specified ripple current at 120 Hz and 100 kHz addresses both mains and switching-age ripple requirements.
• Compact snap-in form factor: φ22 × 50 mm snap-in radial can provides a smaller-sized footprint while maintaining secure PCB mounting for high-current paths.
• Endurance-tested: 2000-hour life at 85°C offers design confidence for sustained operation in thermal stress environments.
• Predictable electrical behavior: ±20% tolerance and a 0.15 tan δ (120 Hz, 20°C) specification support reliable filtering and decoupling designs.
• Production-ready packaging: Tray packing and mass-production status simplify procurement and assembly for volume designs.

Why Choose LLG2G391MELZ50?

The LLG2G391MELZ50 balances a high 400 V rating and substantial 390 µF capacitance with a compact snap-in package, making it suitable for designers who need reliable bulk capacitance in constrained layouts. Its specified ripple current ratings at both low and high frequencies, leakage current limits, and 2000-hour endurance at 85°C provide measurable performance parameters to evaluate against system requirements.

This part is well suited to engineers designing general-purpose power electronics, power supplies, and industrial modules that require a RoHS-compliant, production-ready aluminum electrolytic capacitor with documented electrical and thermal endurance characteristics.

Request a quote or submit a technical inquiry to our sales team to discuss availability, lead times, and volume pricing for the LLG2G391MELZ50.