LGW2G391MELB45

The LGW2G391MELB45 is a snap‑in terminal aluminum electrolytic capacitor rated at 390 µF and 400 V. It is designed for general purpose use where high ripple current capability, elevated operating temperature, and a robust snap‑in mounting are required.

Key value propositions include high ripple current handling, a 105°C operating capability with a 3000‑hour endurance rating at 105°C, and RoHS compliance for regulatory alignment.

Key Features

• Capacitance and Voltage — 390 µF nominal capacitance with a 400 V rated voltage and ±20% tolerance, suitable where high DC voltage and bulk capacitance are needed.
• High Ripple Current — Rated ripple current: 2.52 A at 120 Hz and 3.604 A at 50 kHz, supporting applications with significant AC ripple on DC rails.
• High‑Temperature Endurance — Operates from −25 °C to 105 °C and is specified to withstand 3000 hours of rated ripple current at 105 °C.
• Mounting & Package — Snap‑in radial can package for secure board mounting; package dimensions: L: 4.5 × D: 3 cm (approx. 45 × 30 mm) and a seated height of 1.772 inch.
• Leakage and Reliability — Leakage current specification follows I ≤ 3√CV (µA) after voltage application (per datasheet guidance), and endurance/shelf‑life characteristics are defined in the product specification.
• Environmental Compliance — Compliant to the RoHS Directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General Purpose Power Equipment — Bulk capacitance and high voltage rating make this capacitor suitable for general purpose power conversion and filtering functions where high ripple current and elevated temperature operation are present.
• Industrial Electronics — Snap‑in mounting and 105 °C endurance support robust mechanical and thermal environments in industrial assemblies.
• High‑Voltage DC Circuits — 400 V rating and 390 µF capacitance provide energy storage and smoothing in higher‑voltage DC applications.

Unique Advantages

• High ripple current capability: Explicit ripple ratings at 120 Hz (2.52 A) and 50 kHz (3.604 A) allow designers to size capacitors against measured ripple currents.
• Elevated temperature endurance: Rated to 105 °C with a specified 3000‑hour life under rated ripple conditions, enabling sustained performance in hot operating environments.
• Snap‑in mounting for secure assembly: Radial, can‑style snap‑in terminals provide reliable mechanical retention for through‑hole board assemblies.
• Clear leakage specification: Leakage current defined by I ≤ 3√CV (µA) for predictable insulation and end‑of‑life behavior.
• RoHS compliant: Meets current RoHS directives for applications requiring restricted substance compliance.

Why Choose LGW2G391MELB45?

The LGW2G391MELB45 combines a high 400 V rating with substantial capacitance (390 µF) and defined high ripple current performance, packaged in a snap‑in radial can for secure board mounting. Its 105 °C operating capability and 3000‑hour endurance at rated ripple current make it suitable for designs that require sustained thermal and electrical reliability.

This part is well suited to engineers and procurement teams specifying components for higher‑voltage DC circuits and general purpose electronic equipment where RoHS compliance, predictable leakage behavior, and robust mounting are important considerations.

Request a quote or submit an inquiry to sales for pricing, availability, and lead‑time information on the LGW2G391MELB45.