LNT2W681MSEFBB

The LNT2W681MSEFBB is an aluminum electrolytic capacitor from Nichicon's LNT series, configured with screw terminals for secure, high-current connections. It is a polarized, high-voltage capacitor rated at 450 V with 680 µF capacitance and ±20% tolerance, designed for general-purpose applications that require high ripple handling and extended thermal endurance.

Key attributes include a 105°C operating rating, specified load life, and RoHS compliance, making this part suitable where sustained performance at elevated temperature and reliable electrical connections are important.

Key Features

• High Voltage & Capacitance — 450 V rated voltage combined with 680 µF capacitance provides substantial energy storage for high-voltage circuits.
• Polarized Screw-Terminal Package — Radial can with screw terminals enables secure, low-resistance connections for heavy-current applications and simple panel or chassis mounting.
• High Ripple Current Capability — Rated ripple current of 4.4 A at 120 Hz and 6.16 A at 100 kHz supports demanding AC ripple and switching conditions.
• Extended Thermal Endurance — 105°C maximum operating temperature with a specified load life (series life specification: 5,000 hours; note 2,000 hours for certain voltage ranges as noted in series documentation).
• Leakage and Stability Characteristics — Leakage current specification uses the series formula (after 5 minutes, ≤ 3√(CV) µA or 5 mA whichever is smaller), with defined limits for capacitance change and tan δ over endurance and shelf-life tests.
• Low-Temperature Performance — For rated voltages in the 160–500 V range, impedance stability at low temperatures is specified (e.g., Z(–25°C)/Z(+20°C) performance values available in series documentation).
• RoHS Compliant — Conforms to RoHS directive requirements.

Typical Applications

• High-voltage power supplies — Energy storage and smoothing in power supplies where 450 V rating and high capacitance are required.
• Power conversion and DC-link circuits — Bulk capacitance for switching converters and inverters that need high ripple current capability and screw-terminal connections.
• Industrial power electronics — General-purpose use in industrial systems that demand sustained performance at elevated temperatures and robust electrical connections.

Unique Advantages

• High-voltage energy storage: 450 V rating with 680 µF offers significant stored energy per component for high-voltage systems.
• Secure, high-current terminations: Screw-terminal radial can package provides reliable mechanical and electrical connections for heavy-duty installations.
• Designed for elevated-temperature operation: 105°C rating and specified load-life performance support long-term operation in hot environments.
• Measured ripple capability: Explicit ripple current ratings at 120 Hz and 100 kHz enable designers to select the part based on measured AC stress conditions.
• Documented endurance and stability: Series-level endurance and shelf-life criteria (capacitance, tan δ, leakage limits) provide predictable aging behavior under rated conditions.
• Regulatory compliance: RoHS-compliant construction supports environmental requirements for many regional markets.

Why Choose LNT2W681MSEFBB?

The LNT2W681MSEFBB combines a high 450 V rating and substantial 680 µF capacitance in a screw-terminal aluminum electrolytic package, offering designers a reliable choice for high-voltage energy storage and smoothing. Its high ripple current ratings and 105°C thermal endurance make it appropriate for applications where sustained electrical and thermal performance are required.

This part is suitable for engineers and procurement teams specifying components for high-voltage power supplies, DC-link stages, and industrial power electronics that require robust terminations, documented endurance, and RoHS compliance.

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