LGY1K392MELB40

The LGY1K392MELB40 is a snap-in aluminum electrolytic capacitor from Nichicon's LGY series designed for long-life, high-voltage power applications. It combines a high capacitance of 3.9 mF with an 80 V rating and a compact φ30 × 40 mm can-style snap-in package optimized for robust board retention.

Engineered for industrial and commercial power systems, this component delivers sustained performance at elevated temperatures and heavy ripple conditions, making it suitable for industrial power supplies, ballast circuits and other general-purpose power-filtering uses.

Key Features

• High Capacitance & Voltage: 3.9 mF nominal capacitance at an 80 V rated voltage for bulk energy storage and smoothing in power rails.
• Long-Life High-Temperature Endurance: Rated for 5000 hours at 105°C to support sustained operation in hot environments.
• Wide Operating Temperature Range: Operates from −40°C to +105°C to cover a broad range of industrial ambient conditions.
• Snap-in Radial Can Package: Snap-in (radial, can) mounting for secure mechanical retention and straightforward placement in power assemblies; supplied in tray packing for production runs.
• Low Loss Angle (tan δ): tan δ ≤ 0.20 at 20°C, 120 Hz for the 80 V rating, indicating controlled dielectric losses for power applications.
• High Ripple Capability: Rated ripple currents of 2600 mA at 120 Hz (low frequency) and 2990 mA at 50 kHz (high frequency) to handle substantial AC ripple in power circuits.
• Leakage Current: Specified leakage current of 1670 µA, suitable for power circuits where controlled leakage is required.
• RoHS Compliant & Mass Production Ready: Manufactured for mass production and compliant with RoHS directives.

Typical Applications

• Industrial Power Supplies: Bulk smoothing and energy storage in industrial DC power supplies that require reliable operation at elevated temperatures.
• Ballast Circuits: Designed for use in ballast applications where long-life and sustained ripple endurance are important.
• General-Purpose Power Filtering: Filtering and decoupling in commercial and industrial equipment that benefit from high capacitance and high-voltage capability.

Unique Advantages

• Long Thermal Endurance: 5000 hours at 105°C provides predictable aging behavior and reliability in high-temperature designs.
• Robust Ripple Handling: Distinct ripple ratings for both low and high frequencies (2.6 A at 120 Hz and 2.99 A at 50 kHz) support designs with significant AC stress across frequency ranges.
• High Voltage Capability: 80 V rating enables use in higher-voltage power rails without stacking multiple capacitors.
• Practical Mechanical Form Factor: φ30 × 40 mm snap-in can offers secure board mounting and straightforward assembly for production environments.
• Controlled Dielectric Losses: tan δ ≤ 0.20 at 20°C/120 Hz helps minimize heating and improve efficiency in continuous-duty applications.
• Production-Friendly Packaging: Tray packing and mass-production availability simplify procurement and assembly for volume manufacturing.

Why Choose LGY1K392MELB40?

The LGY1K392MELB40 is positioned for engineers and buyers who need a high-capacitance, high-voltage electrolytic solution with demonstrable long-life performance at elevated temperatures. Its combination of 3.9 mF capacitance, 80 V rating, and 5000-hour endurance at 105°C makes it a practical choice for industrial power supplies, ballast circuits and other demanding power-filtering roles.

With defined ripple current capability across frequencies, a low tan δ rating, snap-in mechanical retention and RoHS compliance, this part supports reliable, repeatable integration into production assemblies where robust operation and predictable aging are essential.

Request a quote or submit a production RFQ to receive pricing and availability information for LGY1K392MELB40.