LGW2G681MELC50

The LGW2G681MELC50 from Nichicon is a snap‑in terminal aluminum electrolytic capacitor rated at 680 µF and 400 V. It is part of the LGW series designed for general purpose use where high ripple current and elevated operating temperature performance are required.

This capacitor delivers high ripple current capability and proven endurance at elevated temperatures, making it suitable for applications that demand sustained performance under thermal and electrical stress while meeting RoHS requirements.

Key Features

• Capacitance and Voltage — 680 µF nominal capacitance with a 400 V rated voltage and ±20% tolerance, providing substantial energy storage for high-voltage applications.
• High Ripple Current Performance — Specified ripple current of 3.21 A at 120 Hz and 4.59 A at 50 kHz, enabling effective handling of AC ripple on DC links and power rails.
• High‑Temperature Endurance — Rated for operation to 105°C and specified to withstand 3000 hours of rated ripple current at 105°C, supporting sustained operation under thermal stress.
• Package and Mounting — Snap‑in radial can construction for secure PCB mounting in applications that require a rugged, serviceable electrolytic solution.
• Leakage Current Specification — Series leakage current defined as I ≤ 3√CV (μA) after 5 minutes at 20°C, providing a measurable baseline for design verification.
• Environmental Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863), meeting common environmental regulatory expectations.

Typical Applications

• General Purpose — Suited for general purpose applications requiring 680 µF at 400 V with high ripple current capability and tolerance for elevated operating temperatures.
• High‑Ripple Environments — Applicable where sustained ripple current and long endurance at 105°C are required, based on the 3000‑hour rated ripple endurance.
• Bulk Energy Storage — Appropriate where substantial capacitance at high voltage is needed for energy buffering and DC link support within the limits of provided specifications.

Unique Advantages

• Proven High‑Temperature Endurance: 3000 hours at 105°C under rated ripple current supports long-term reliability in thermally demanding environments.
• Measured Ripple Performance: Published ripple current values at 120 Hz (3.21 A) and 50 kHz (4.59 A) allow designers to size capacitors against real ripple conditions.
• High‑Voltage Capability: 400 V rating with 680 µF capacitance provides significant stored energy for high‑voltage power stages.
• Robust Mounting: Snap‑in radial can simplifies secure PCB installation for systems requiring durable through‑hole components.
• Regulatory Compliance: RoHS compliance supports deployment in environments with restricted substance requirements.

Why Choose LGW2G681MELC50?

The LGW2G681MELC50 combines high nominal capacitance at 400 V with documented high ripple current capability and a 105°C endurance rating. Its snap‑in radial can construction and RoHS compliance make it a practical choice for engineers specifying reliable, high‑voltage electrolytic capacitors for general purpose designs that must endure sustained ripple and elevated temperatures.

This part is well suited to customers and designs that require verifiable ripple performance, clear leakage current characteristics, and long endurance at high operating temperature—providing predictable behavior and simplified qualification for production systems.

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