LGR2G181MELC25

The LGR2G181MELC25 is a snap-in terminal aluminum electrolytic capacitor from Nichicon’s LGR long-life assurance series. It delivers 180 µF capacitance at a 400 V rating with polarized, radial can snap-in mounting designed for general-purpose high-voltage applications.

Engineered for sustained operation at elevated temperature, the LGR2G181MELC25 supports long-duration ripple exposure and extended life at 105°C, while meeting RoHS environmental requirements.

Key Features

• Core electrical — 180 µF nominal capacitance with tolerance −20% to +20%; polarized design rated for 400 V DC.
• Thermal and endurance — Operating temperature range −25°C to +105°C and long-life assurance: 10,000 hours endurance when D.C. bias plus rated ripple current is applied at 105°C (series specification).
• Ripple handling — Rated ripple current of 900 mA at 120 Hz and 1.287 A at 50 kHz for this part; frequency coefficients for rated ripple current (400/450 V): 50 Hz 0.77, 120 Hz 1.00, 50 kHz 1.43.
• Leakage and dissipation — Leakage current specified by I ≤ 3√(C·V) µA after 5 minutes at 20°C; tangent of loss angle (tan δ) max. 0.15 at 120 Hz for 200–400 V range (series characteristic).
• Low-temperature stability — Impedance characteristics for 400 V parts: Z(−25°C)/Z(+20°C) ≤ 8 (series characteristic), supporting performance across the specified temperature range.
• Mechanical package — Radial, can-style snap-in mounting; compact footprint with approximate dimensions L: 2.5 cm × D: 3.5 cm for board-level retention and mechanical stability.
• Environmental compliance — RoHS compliant (meets 2011/65/EU, (EU)2015/863 requirements as noted for the LGR series).

Typical Applications

• General-purpose high-voltage systems — Provides bulk capacitance and high-voltage capability for designs requiring a 400 V rated capacitor in a compact snap-in package.
• Power supply filtering — Intended for DC bias plus rated ripple conditions at elevated temperature, supporting smoothing and decoupling tasks within general-purpose power modules.
• Industrial equipment — Suited for applications that need long-life operation at up to 105°C and reliable ripple endurance under continuous use.

Unique Advantages

• Long-life assurance: 10,000 hours endurance at 105°C under D.C. bias plus rated ripple current reduces frequency of component replacement in high-temperature installations.
• High-voltage capability: 400 V rating enables use in higher-voltage DC bus and power circuits without additional series stacking.
• Measured ripple performance: Specified ripple currents at 120 Hz and 50 kHz with documented frequency coefficients allow predictable thermal and lifetime planning.
• Controlled leakage and loss: Leakage current limit of I ≤ 3√(C·V) µA and tan δ specification provide predictable electrical behavior for design verification.
• Secure snap-in mounting: Radial can snap-in package simplifies PCB retention for power assemblies while keeping a compact board footprint.
• Regulatory compliance: RoHS conformity supports environmental requirements for production and deployment.

Why Choose LGR2G181MELC25?

The LGR2G181MELC25 is positioned for engineers who require a proven, long-life aluminum electrolytic capacitor with 400 V capability, substantial capacitance (180 µF), and operation at elevated temperature (105°C). Its documented endurance and ripple specifications make it suitable for general-purpose high-voltage applications where predictable lifetime and thermal performance are important.

As part of Nichicon’s LGR series, this snap-in radial can combines mechanical retention with series-level reliability data (endurance, leakage, tan δ, and frequency coefficients), helping reduce design uncertainty and streamline component selection for production designs.

To request a quote or check current availability and lead times for LGR2G181MELC25, please submit a quote or contact sales with your quantity and delivery requirements.