LGW2D681MELA35

The LGW2D681MELA35 from Nichicon is a snap-in terminal aluminum electrolytic capacitor in the LGW series, designed for high ripple current applications. With a 680 µF capacitance at 200 V, a radial can snap-in package, and an operating range to 105°C, it targets general-purpose power electronics requiring bulk energy storage and robust AC ripple handling.

Key Features

• Capacitance & Voltage — 680 µF capacitance rated at 200 V, with a tolerance of ±20% (–20% to +20%) measured at 120 Hz, 20°C.
• High Ripple Current — Rated ripple current of 2.65 A at 120 Hz (series-rated) and 3.975 A at 50 kHz for this part, supporting demanding AC ripple conditions.
• 105°C Endurance — Designed for operation up to 105°C and specified to withstand 3,000 hours of D.C. bias plus rated ripple current at 105°C (series endurance requirement).
• Robust Packaging — Snap-in terminal, radial can package (L: 3.5 × D: 2.5 cm), enabling secure board mounting for higher-current power modules.
• Wide Temperature Range — Rated for –40°C to +105°C operation for 200 V variants, providing stability across typical industrial temperature conditions.
• Leakage Current Specification — Series leakage current limit defined as I ≤ 3√CV (µA) after 5 minutes at 20°C (C: µF, V: V).
• Low-Frequency & High-Frequency Behavior — Frequency coefficient of rated ripple current for the 200–250 V range: 50 Hz = 0.81, 60 Hz = 0.85, 120 Hz = 1.00, 50 kHz+ = 1.50—useful for predicting ripple capability across frequencies.
• RoHS Compliant — Compliant to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Power supply filtering — Bulk smoothing and ripple filtering on 200 V rails where 680 µF capacitance and high ripple capability are required.
• Industrial power modules — Board-mounted energy storage and decoupling in industrial converters and inverters that operate at elevated temperatures up to 105°C.
• High-frequency ripple management — Applications that impose significant high-frequency ripple (coefficients provided up to 50 kHz+) where predictable ripple current behavior is needed.

Unique Advantages

• Proven high-ripple endurance: Specified to tolerate rated ripple current plus DC bias for 3,000 hours at 105°C, supporting long-term reliability in stressed power systems.
• Predictable frequency performance: Published frequency coefficients let designers scale rated ripple current across 50 Hz to 50 kHz+ operation for accurate thermal and lifetime calculations.
• Secure snap-in mounting: Radial snap-in terminal simplifies PCB assembly for heavy-current power sections and mechanical retention.
• Wide operating temperature window: –40°C to +105°C rating for 200 V versions enables deployment across typical industrial environments.
• Clear electrical limits: Leakage current and tan δ limits defined in the series datasheet help with margining and quality checks during design and production.
• RoHS compliance: Meets current RoHS directives for use in lead-restricted product designs.

Why Choose LGW2D681MELA35?

The LGW2D681MELA35 delivers a combination of high capacitance, a 200 V rating, and designed high-ripple endurance in a snap-in radial can package. Its specification set—680 µF at 200 V, defined ripple currents at both low and high frequencies, and a 105°C endurance rating—makes it suitable for designs that need reliable bulk energy storage and predictable ripple handling under elevated temperature and continuous-load conditions.

This part is well suited for engineers and procurement teams building industrial power supplies, converters, and high-ripple DC bus circuits who require component-level data for thermal and lifetime planning, along with RoHS compliance for regulatory alignment.

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