LGU2W121MELY

The LGU2W121MELY is a snap‑in terminal aluminum electrolytic capacitor designed for general purpose power electronics requiring high voltage handling and sustained ripple capability. It is a 450 V, 120 µF polarized can‑type capacitor rated for operation to 105°C with long endurance and RoHS compliance.

Engineered for applications that demand sustained ripple performance and low leakage over extended thermal stress, this part delivers a combination of high voltage rating, high ripple current capability and 3,000‑hour endurance at 105°C.

Key Features

• Electrical Rating: 120 µF capacitance at a rated voltage of 450 V with ±20% tolerance, suitable for high‑voltage smoothing and energy buffering.
• High‑Temperature Endurance: Specified lifetime of 3,000 hours at 105°C when subjected to rated DC bias plus rated ripple current, supporting sustained operation under elevated temperatures.
• Ripple Current Capability: 750 mA low‑frequency ripple current (120 Hz) and 1.073 A high‑frequency ripple current (50 kHz), enabling effective filtering in both mains and higher‑frequency power stages.
• Low Loss Characteristic: Tangent of loss angle (tan δ) of 0.20 (measurement at 120 Hz, 20°C) for predictable dissipation behavior in AC conditions.
• Low Leakage: Maximum leakage current around 690 µA (after rated voltage applied), reducing no‑load losses and improving system stability.
• Package & Mounting: Radial, snap‑in can (φ20×50L) with a physical size of L: 5 × D: 2 cm and tray packing; designed for secure snap‑in PCB mounting and efficient assembly.
• Operating Temperature & Polarization: Polarized device rated for −25°C to +105°C operating range, matching the series’ 105°C standard for high‑temperature applications.
• Regulatory Compliance: RoHS compliant, supporting regulatory requirements for restricted substances.

Typical Applications

• Power Supply Filtering: Bulk smoothing and ripple suppression in high‑voltage DC power supplies and power conversion front ends where 450 V rating and sustained ripple are required.
• Industrial Drives and Inverters: DC link and energy buffering in motor drives and inverter systems that see elevated temperatures and continuous ripple stress.
• Power Electronics Modules: Decoupling and energy storage in converters and regenerative systems that benefit from the capacitor’s 3,000‑hour endurance at 105°C.

Unique Advantages

• High Voltage Capability: 450 V rating enables use in high‑voltage rails and DC link applications without compromising capacitance.
• Extended Thermal Endurance: 3,000‑hour qualification at 105°C supports long service life under sustained thermal and electrical stress.
• Robust Ripple Handling: Dual specified ripple ratings (low and high frequency) provide design flexibility across mains and switching frequencies.
• Controlled Losses and Leakage: tan δ = 0.20 and low leakage current (~690 µA) help minimize dissipation and standby losses for more predictable thermal design.
• Secure Snap‑in Mounting: Radial snap‑in can package simplifies PCB installation and mechanical retention in high‑vibration environments.
• RoHS Compliant: Meets RoHS requirements for restricted substances, facilitating regulatory compliance in many markets.

Why Choose LGU2W121MELY?

The LGU2W121MELY combines a high 450 V rating, substantial capacitance (120 µF) and proven 3,000‑hour endurance at 105°C to deliver reliable energy storage and ripple suppression in demanding power electronics. Its snap‑in can package and dual‑frequency ripple specifications make it a practical choice for designers specifying DC link, bulk filtering and decoupling in high‑voltage systems.

This part is suited to engineers and procurement teams seeking a RoHS‑compliant, production‑ready aluminum electrolytic capacitor that balances high voltage, thermal endurance and measurable electrical performance for industrial and power conversion applications.

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