LGU2G121MELZ

The LGU2G121MELZ is an aluminum electrolytic capacitor from Nichicon’s LGU series, featuring a snap‑in terminal radial can design for secure board mounting. With a rated capacitance of 120 µF at 400 V, this part is targeted for general‑purpose power electronics where high voltage handling, ripple endurance and compact packaging are required.

Designed for continuous operation up to 105°C and manufactured to meet series endurance specifications, the LGU2G121MELZ delivers predictable performance for industrial and power applications that demand long life and reliable DC smoothing or energy storage.

Key Features

• Capacitance & Voltage — 120 µF nominal capacitance with a 400 V rated voltage, suitable for high‑voltage DC bus and smoothing applications.
• Snap‑in Radial Can Package — Snap‑in terminal configuration for secure mechanical retention and easy insertion in through‑hole assemblies; package size φ22 × 35 mm (L: 3.5 × D: 2.2 cm).
• Ripple Current Capability — Low‑frequency ripple current 750 mA at 120 Hz and high‑frequency ripple current 1.073 A at 50 kHz, supporting both mains‑frequency and higher frequency switching environments.
• Leakage Current — Specified leakage current of 650 µA, enabling predictable self‑discharge behavior in DC circuits.
• High‑Temperature Endurance — Rated for 3000 hours at 105°C under rated ripple/current conditions, supporting long service life in elevated ambient temperatures.
• Operating Temperature Range — Specified range from –25°C to +105°C for the 315–450 V voltage class, accommodating a wide range of industrial environments.
• Capacitance Tolerance — ±20% at 120 Hz, 20°C, for design and tolerance planning.
• Compliance — RoHS‑compliant construction for regulatory and environmental requirements.
• Packaging — Tray packing suited for handling and assembly processes.

Typical Applications

• Power Supplies — DC bus smoothing and bulk energy storage at 400 V systems where sustained ripple performance and long life are needed.
• Industrial Drives — Filtering and energy buffering in motor drives and industrial converters that operate at elevated temperatures and require robust ripple handling.
• Switch‑Mode Power Electronics — Support for both low‑frequency and high‑frequency ripple currents in switching regulators and inverters.
• General Purpose Power Circuits — Use in a broad range of general‑purpose power applications that benefit from a compact, snap‑in high‑voltage capacitor.

Unique Advantages

• High‑Voltage Capability: 400 V rating provides headroom for high‑voltage DC bus designs without increasing capacitance footprint.
• Compact Form Factor: φ22 × 35 mm can delivers 120 µF in a small radial package, helping minimize board space in through‑hole layouts.
• Designed for Long Life at High Temperature: 3000 hours endurance at 105°C under rated ripple conditions supports extended field life in hot environments.
• Broad Ripple Performance: Specified ripple currents at both 120 Hz and 50 kHz allow predictable filtering performance across switching frequencies.
• Secure Mounting: Snap‑in terminals provide robust mechanical retention for heavy current and vibration environments.
• Regulatory Alignment: RoHS compliance simplifies selection for environmentally regulated projects.

Why Choose LGU2G121MELZ?

The LGU2G121MELZ combines a 400 V rating, 120 µF capacitance and a compact snap‑in radial can to deliver a practical solution for high‑voltage smoothing and energy storage in general‑purpose power electronics. Its specified ripple current performance at both low and high frequencies, along with a 3000‑hour endurance at 105°C, makes it suitable for designs that require predictable long‑term behavior under continuous thermal and electrical stress.

This capacitor is well suited for design teams and procurement professionals building industrial power supplies, converters, and other high‑voltage systems that benefit from a regulated, RoHS‑compliant component backed by Nichicon’s LGU series specifications.

Request a quote or submit a request for availability and pricing to receive lead‑time and order information for the LGU2G121MELZ.