LGN2G681MELC45

The LGN2G681MELC45 from Nichicon is a 680 µF, 400 V aluminum electrolytic capacitor in a snap‑in radial can package, part of the LGN series. It is a polarized, smaller‑sized snap‑in capacitor designed for general purpose power applications where high‑temperature endurance and reliable ripple handling are required.

Built for elevated operating environments, this part withstands 3000 hours of rated ripple current at 105°C and is compliant with RoHS (2011/65/EU, (EU)2015/863).

Key Features

• Capacitance & Voltage — 680 µF nominal capacitance at a 400 V rated voltage, suitable for high‑voltage general purpose applications.
• Snap‑In Radial Can Package — Snap‑in mounting type and radial can construction for secure board installation and robust mechanical retention.
• High‑Temperature Endurance — Rated to operate from −25°C to 105°C and designed to withstand 3000 hours of rated ripple current at 105°C.
• Ripple Current Performance — Rated ripple current: 2.12 A at 120 Hz and 3.032 A at 100 kHz, supporting sustained AC stress at the rated temperature.
• Capacitance Tolerance — ±20% (measured at 120 Hz, 20°C), providing predictable sizing for circuit design.
• Dielectric Loss (tan δ) — For the applicable voltage range including 400 V, tan δ (max.) is 0.15 when measured at 120 Hz, 20°C.
• Size — Compact footprint with physical dimensions L: 4.5 × D: 3.5 cm to support tighter layouts; one rank smaller case size than the LGU series.
• Regulatory — Compliant to RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General purpose power systems — Use where a 400 V, 680 µF polarized snap‑in capacitor is required with long‑term ripple endurance at elevated temperature.
• Power supply filtering — Suitable for filtering and smoothing duties in circuits that demand sustained ripple handling at up to 105°C.
• Industrial electronics — Appropriate for general purpose industrial equipment that requires RoHS compliance and reliable high‑temperature performance.

Unique Advantages

• Proven high‑temperature endurance — 3000‑hour rated ripple endurance at 105°C reduces the need for overspecification in thermally demanding designs.
• Compact, snap‑in form factor — Smaller case size than comparable LGU parts enables space savings on PCBs while retaining snap‑in mechanical security.
• Measured ripple capability — Specified ripple currents at both low and high frequencies (120 Hz and 100 kHz) let designers size capacitors to actual circuit stress.
• Clear electrical characteristics — Specified capacitance tolerance and tan δ at 120 Hz provide predictable electrical behavior for design validation.
• RoHS compliance — Meets current RoHS requirements for regulated material content.

Why Choose LGN2G681MELC45?

The LGN2G681MELC45 combines a high nominal capacitance and 400 V rating with a snap‑in radial package optimized for elevated‑temperature endurance. Its 3000‑hour rated ripple capability at 105°C and defined ripple current values at both 120 Hz and 100 kHz make it suitable for designers needing reliable, long‑life electrolytic performance in constrained board space.

This part is well suited to engineers and procurement teams designing general purpose power systems and industrial electronics where predictable electrical characteristics, compact packaging, and regulatory compliance are important considerations.

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