LGUW6391MELC

The LGUW6391MELC is an aluminum electrolytic capacitor in a snap-in terminal, radial can package from Nichicon's LGU series. It provides 390 µF capacitance at a 420 V rating with ±20% tolerance for general-purpose power applications.

Designed for sustained operation at elevated temperatures, this part is specified for operation from −25 °C to +105 °C and is endurance-tested for 3000 hours at 105 °C. Its combination of high voltage, bulk capacitance and long-term endurance makes it suitable where reliable DC bus smoothing and energy buffering are required.

Key Features

• Aluminum electrolytic, snap-in package — Radial can with snap-in terminals for secure PCB mounting and mechanical retention.
• High voltage and bulk capacitance — 390 µF nominal capacitance rated at 420 V for high-voltage DC bus and filtering applications.
• Endurance at elevated temperature — Specified for 3000 hours at 105 °C (with D.C. bias plus rated ripple current), providing predictable long-term performance under thermal stress.
• Defined electrical characteristics — Capacitance tolerance ±20% (120 Hz, 20 °C) and maximum tan δ of 0.15 at the 160–420 V rating band (measured at 120 Hz, 20 °C).
• Ripple current capability — Rated ripple current of 1.55 A at 120 Hz and 2.216 A at 50 kHz, enabling handling of AC ripple across a range of frequencies.
• Operating temperature range — −25 °C to +105 °C to match equipment that runs at elevated ambient temperatures.
• Compliance and packaging — RoHS compliant and supplied in tray packing for production handling.

Typical Applications

• Power supply filtering and smoothing — Bulk capacitance and 420 V rating suit DC bus filtering and energy buffering on high-voltage rails.
• Industrial power conversion — Long 3000 hour endurance at 105 °C and robust ripple current handling make it appropriate for converters and inverters operating under sustained thermal load.
• Uninterruptible power supplies and energy storage — High-voltage, high-capacitance properties support temporary energy delivery and hold-up functions.
• General-purpose high-voltage circuitry — Use where reliable, high-voltage electrolytic bulk capacitance is required in radial, snap-in form factor.

Unique Advantages

• High-voltage bulk energy in a single component: 390 µF at 420 V reduces part count compared with multiple lower-voltage capacitors in series.
• Proven high-temperature endurance: 3000 hours at 105 °C under rated ripple current offers predictable life for thermal-stressed designs.
• Frequency-versatile ripple handling: Specified ripple current at 120 Hz and 50 kHz supports applications across common power-system frequencies.
• Secure mechanical mounting: Snap-in radial can package simplifies assembly and provides reliable retention on PCBs.
• Regulatory compliance and production-ready packaging: RoHS compliant and tray packed for streamlined procurement and manufacturing.

Why Choose LGUW6391MELC?

The LGUW6391MELC delivers high-voltage bulk capacitance with engineered endurance for sustained operation at +105 °C, making it well suited to power electronics and industrial designs that demand reliable DC bus smoothing and energy buffering. As part of Nichicon’s LGU series, it pairs clear electrical specifications—420 V rating, 390 µF capacitance, defined tan δ and ripple current ratings—with a snap-in radial package for straightforward integration.

This capacitor is aimed at designers and procurement teams specifying robust, production-ready components for high-voltage power systems where long-term thermal stability, ripple performance and RoHS compliance are required.

Request a quote or submit a product inquiry to receive pricing and lead-time information for the LGUW6391MELC.