LGM2W391MELA45

The LGM2W391MELA45 is a snap-in terminal aluminum electrolytic capacitor from Nichicon’s LGM series offering 390 µF at 450 V in a compact radial can. It delivers high-voltage capacitance in a one-rank smaller case than the LGL series, making it suited for equipment downsizing and space-constrained designs.

Designed for general-purpose use, this polarized capacitor is specified for operation from –25 °C to +105 °C and is RoHS compliant, supporting regulatory requirements for lead-restricted designs.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance at 450 V provides substantial energy storage for high-voltage applications within a compact package.
• Compact Snap-In Package — Radial, can-type snap-in mounting simplifies secure PCB installation while saving PCB footprint; case size is one rank smaller than LGL for equipment downsizing.
• Operating Temperature — Rated for –25 °C to +105 °C for use across a wide ambient temperature range.
• Endurance & Lifetime — Specified endurance of 2000 hours at 105 °C under D.C. bias plus rated ripple current; after test the capacitor meets capacitance, tan δ and leakage current criteria defined in the datasheet.
• Ripple Current — Rated ripple current of 900 mArms at 120 Hz (105 °C); frequency coefficients provided in the datasheet for higher frequency operation.
• Leakage & Dissipation — Leakage current defined as I ≤ 3√CV (µA) after 5 minutes at 20 °C; tan δ ≤ 0.20 (120 Hz, 20 °C) for predictable AC loss behavior.
• Tolerance & Polarization — Capacitance tolerance ±20% (120 Hz, 20 °C); polarized device suitable where a polarized aluminum electrolytic is required.
• Regulatory Compliance — Compliant with RoHS directive (2011/65/EU, (EU)2015/863), addressing restricted substances requirements.

Typical Applications

• General-purpose electronic equipment — Provides high-voltage capacitance for a variety of general-purpose designs where a polarized electrolytic is required.
• Equipment downsizing projects — The one-rank smaller case size compared to LGL supports reduction of enclosure and PCB footprint in space-constrained products.
• High-voltage assemblies — 450 V rating accommodates designs that require substantial voltage headroom in a compact radial snap-in package.

Unique Advantages

• High-voltage capacity in a compact form: 390 µF at 450 V in a smaller case enables designers to retain capacitance while reducing physical size.
• Snap-in mounting for secure installation: Radial snap-in terminals provide reliable mechanical retention for through-hole PCBs and assembly processes.
• Designed for elevated temperature operation: Rated to 105 °C with a 2000-hour endurance specification to support sustained high-temperature use.
• Predictable electrical characteristics: Defined leakage current formula, tan δ limit and impedance stability data help designers model performance under specified conditions.
• RoHS-compliant construction: Meets lead-restriction requirements for regulatory and environmental compliance in manufactured products.

Why Choose LGM2W391MELA45?

The LGM2W391MELA45 positions itself as a compact, high-voltage polarized aluminum electrolytic solution for designers seeking to reduce enclosure and PCB footprint without sacrificing capacitance or thermal endurance. Its snap-in radial package, 450 V rating, and 2000-hour endurance at 105 °C make it suitable for general-purpose electronic equipment and projects focused on equipment downsizing.

Backed by Nichicon’s LGM series specifications—clear leakage and loss-angle limits, frequency-based ripple coefficients, and RoHS compliance—this capacitor offers predictable electrical behavior and compliance support for production designs.

Request a quote or contact sales to discuss availability, lead times, and how LGM2W391MELA45 can fit your next compact high-voltage design.