LGM2W681MELC40

The LGM2W681MELC40 is an aluminum electrolytic capacitor in a snap-in terminal, ultra-smaller-sized package from Nichicon’s LGM series. It delivers 680 µF nominal capacitance at a 450 V rated voltage while occupying a reduced case size designed to support equipment downsizing.

Engineered for general-purpose applications, this polarized, radial can capacitor is specified for operation from –25°C to +105°C, with RoHS compliance and defined endurance and leakage characteristics suitable for demanding thermal environments.

Key Features

• Electrical Performance  680 µF nominal capacitance with a ±20% tolerance and a 450 V rated voltage suitable for high-voltage, general-purpose circuits.
• High-Temperature Rating  Rated for operation up to 105°C with an endurance specification of 2000 hours at 105°C under D.C. bias plus rated ripple current.
• Ripple Current Capability  Rated ripple current of 1.4 A at 120 Hz (105°C); equivalent higher-frequency ripple capability of approximately 2.002 A at 50 kHz based on frequency coefficient.
• Compact Snap-In Package  Ultra-smaller-sized snap-in radial can (size: L 4.0 × D 3.5 cm), one rank smaller than the LGL series to support equipment size reduction.
• Reliability Parameters  Leakage current limited by I ≤ 3√CV (μA) after 5 minutes at 20°C; tan δ ≤ 0.20 at 120 Hz, 20°C. Endurance and shelf-life recovery limits are specified in the datasheet.
• Compliance and Marking  RoHS compliant (2011/65/EU, (EU)2015/863). Marked with white letters on a black sleeve for easy identification.

Typical Applications

• General-purpose equipment  Designed for general-purpose circuits where a high-voltage electrolytic capacitor is required.
• Equipment downsizing projects  One rank smaller case size than LGL makes this part suitable for designs targeting reduced enclosure size.
• High-temperature environments  Specified for continuous operation up to 105°C and endurance testing at 105°C for 2000 hours.

Unique Advantages

• Compact high-voltage solution: 450 V rating combined with a smaller snap-in can for space-constrained designs.
• Validated high-temperature endurance: 2000 hours at 105°C under rated conditions, with defined limits for capacitance change, tan δ and leakage current.
• Measurable ripple capability: Rated ripple current of 1.4 A at 120 Hz and frequency-scaled performance to ~2.002 A at 50 kHz, enabling predictable thermal and ripple behavior.
• Clear reliability limits: Leakage current defined by I ≤ 3√CV (μA) after 5 minutes at 20°C and tan δ specified for quality control and acceptance testing.
• RoHS compliance: Conforms to applicable RoHS directives for regulated materials.
• Easy identification and mounting: Polarized snap-in radial can with white-on-black sleeve marking for straightforward assembly and inspection.

Why Choose LGM2W681MELC40?

The LGM2W681MELC40 is positioned for engineers and procurement teams seeking a compact, high-voltage aluminum electrolytic solution that supports equipment downsizing without sacrificing defined endurance and ripple specifications. Its combination of 680 µF at 450 V, snap-in mounting, and a rated temperature of up to 105°C makes it a practical choice for general-purpose power designs that require predictable electrical and thermal performance.

With explicit endurance, leakage, and tan δ criteria documented for the LGM series, this part delivers verifiable, specification-driven value for projects that need a reliable, compact electrolytic capacitor from a recognized series.

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