LGNW6121MELZ30

The LGNW6121MELZ30 is a Nichicon LGN-series aluminum electrolytic capacitor in a snap-in radial can designed for high-voltage, general-purpose power applications. It delivers 120 µF at a 420 V rating in a compact, smaller-sized case while maintaining robust thermal and ripple performance.

Engineered for durability, this snap-in capacitor withstands 3,000 hours of rated ripple current at 105°C and is RoHS compliant, making it suitable for demanding industrial and power-conversion environments that require compact, reliable energy storage and smoothing.

Key Features

• Capacitance & Voltage — 120 µF rated capacitance at 420 V for high-voltage filtering and DC-link applications.
• High-Temperature Endurance — Endurance rating: 3,000 hours at 105°C when subjected to D.C. bias plus rated ripple current (per LGN-series specification).
• Ripple Current Handling — Rated ripple current: 810 mA at 120 Hz and 1.158 A at 100 kHz, supporting significant AC content in high-voltage circuits.
• Package & Termination — Snap-in radial can for secure PCB mounting; one rank smaller case size than LGU-series equivalents for space-constrained designs.
• Temperature Range & Stability — Operating range −25°C to +105°C; low-temperature impedance and loss characteristics are defined for the LGN series at relevant voltages.
• Electrical Characteristics — Polarized capacitor with capacitance tolerance ±20% (measured at 120 Hz, 20°C) and leakage current defined by LGN-series limits.
• Regulatory Compliance — RoHS directive compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• High-Voltage Power Supplies — Smoothing and bulk energy storage at elevated voltages where compact, high-temperature-capable capacitors are required.
• Industrial Power Conversion — DC-link and filter duties in inverters, converters, and motor drive electronics that experience significant ripple current.
• Commercial and General-Purpose Electronics — Energy buffering and ripple suppression in systems that require a reliable snap-in mounting solution and long life at 105°C.

Unique Advantages

• Proven High-Temperature Endurance: Rated to withstand 3,000 hours of rated ripple current at 105°C, delivering predictable ageing and performance under thermal stress.
• Compact Snap-In Form Factor: Radial snap-in can provides a robust PCB mounting solution while occupying one rank smaller case size than LGU-series parts, helping reduce board footprint.
• High Ripple Current Capability: Supports 810 mA at 120 Hz and 1.158 A at 100 kHz, enabling reliable operation with significant AC components in power circuits.
• High-Voltage Rating: 420 V rating enables use in higher-voltage DC-link and smoothing applications without additional series stacking.
• Clear Electrical Limits: Capacitance tolerance ±20% and defined leakage/tan δ characteristics (per LGN-series specifications) for predictable circuit design.
• RoHS Compliant: Conforms to current RoHS directives for regulatory and environmental alignment.

Why Choose LGNW6121MELZ30?

LGNW6121MELZ30 positions itself as a compact, high-voltage aluminum electrolytic capacitor optimized for designers who need reliable ripple handling and long-term performance at elevated temperatures. Its snap-in radial package and one-rank smaller case size help designers save PCB space without sacrificing endurance or ripple capability.

This part is well-suited for engineering teams building industrial power supplies, converters, and other general-purpose high-voltage systems that require documented endurance at 105°C, clear electrical specifications, and RoHS compliance to support long-term reliability and regulatory needs.

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