LGW2G121MELZ30

The LGW2G121MELZ30 is an aluminum electrolytic capacitor in Nichicon's LGW series featuring a snap-in terminal radial can construction and polarized electrodes. It is designed for general-purpose applications that require a 400 V rated voltage and 120 µF capacitance.

Key value propositions include high ripple-current capability with endurance at elevated temperature (105°C) and RoHS compliance, providing a compact solution (L: 3 × D: 2.2 cm) for assemblies that require sustained ripple performance.

Key Features

• Capacitance & Voltage — 120 µF nominal capacitance with a 400 V rated voltage, suitable for designs specifying this capacitance/voltage point.
• Snap-In Radial Can Package — Snap-in terminal mounting and radial can construction for secure panel or chassis assembly and through-hole mounting convenience.
• High Temperature Endurance — Rated for operation up to 105°C and specified to withstand 3000 hours application of rated ripple current at 105°C.
• Ripple Current Ratings — Measured ripple current performance: 1.22 A at 120 Hz (low frequency) and 1.745 A at 50 kHz (high frequency), with series frequency coefficients for 400–450 V shown in the datasheet (e.g., 1.00 at 120 Hz, 1.43 at 50 kHz).
• Operating Temperature Range — Specified operating range of −25°C to 105°C for the 400 V variant.
• Tolerance & Polarization — Capacitance tolerance of −20% to +20% and polarized construction; observe correct polarity in circuits.
• Lifecycle & Reliability — Endurance defined by capacitance change within ±20% and leakage current and tan δ limits after 3000 hours at 105°C when tested per datasheet conditions.
• Regulatory Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• General-purpose power systems — Appropriate where a 120 µF, 400 V aluminum electrolytic capacitor is required for smoothing or energy storage in general-purpose designs.
• High-ripple environments — Suited for applications that place sustained ripple current stress on capacitors, validated by a 3000-hour ripple endurance at 105°C.
• Through-hole assemblies — Snap-in radial can package facilitates secure mounting in chassis or PC board assemblies that accept snap-in terminals.

Unique Advantages

• Sustained high-ripple endurance: Withstands 3000 hours of rated ripple current at 105°C, providing predictable performance under continuous ripple loading.
• High-voltage capability: 400 V rating allows use in higher-voltage general-purpose applications without stepping up to larger form factors.
• Measured ripple performance: Published ripple current values at both low and high frequencies (1.22 A at 120 Hz; 1.745 A at 50 kHz) help match the part to specific ripple-loading profiles.
• Compact footprint: Physical size L: 3 × D: 2.2 cm provides a space-efficient solution for through-hole assemblies using snap-in terminals.
• Wide operating temperature: Specified for −25°C to 105°C operation for the 400 V variant, supporting elevated-temperature environments within that range.
• RoHS compliance: Meets applicable RoHS directive requirements (2011/65/EU, (EU)2015/863) for regulated substances.

Why Choose LGW2G121MELZ30?

The LGW2G121MELZ30 combines a 120 µF capacitance at 400 V with a snap-in radial can package and high-ripple endurance rated to 105°C for 3000 hours. This combination targets general-purpose designs that require sustained ripple handling and elevated-temperature operation while maintaining a compact through-hole form factor.

Because the product is part of Nichicon's LGW series and carries explicit endurance, ripple current, and temperature specifications, it is well suited for designers and buyers seeking a verifiable, specification-driven capacitor for general-purpose assemblies where documented high-ripple performance and RoHS compliance are required.

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