LNY2W821MSEFBN

The LNY2W821MSEFBN is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LNY series. It provides high capacitance (820 µF) at a 450 V rating in a radial can with screw terminals, designed for general-purpose power applications where compact, high-voltage bulk capacitance is required.

Key design attributes include a 2000-hour load life at 85°C, wide operating temperature range (−40°C to +85°C), and RoHS compliance, delivering reliable energy storage and ripple handling in equipment that benefits from reduced footprint and secure screw-terminal mounting.

Key Features

• High voltage and capacitance — 820 µF nominal capacitance rated for 450 V, providing substantial bulk energy storage for high-voltage circuits.
• Electrical tolerance and loss — Capacitance tolerance ±20% (120 Hz, 20°C) with a specified tanδ of 0.25 to characterize dissipation at 120 Hz.
• Ripple current capability — Rated ripple current of 4.9 A at 120 Hz and 6.86 A at 10 kHz for handling AC ripple in power circuits.
• Temperature range and low-temperature stability — Operating from −40°C to +85°C with an impedance ratio Z(−40°C)/Z(+20°C) of up to 12, supporting operation across broad ambient conditions.
• Reliability / endurance — Load life of 2000 hours at 85°C with DC plus rated ripple current applied, per series endurance specification.
• Leakage and insulation — Leakage current limited to 3√(C·V) µA or 5 mA (whichever is smaller) after 5 minutes at rated voltage; insulation resistance >100 MΩ at DC 500 V between terminal and bracket.
• Screw terminal mounting — Radial can with screw terminals and M5 bolt nominal terminals (φ51 case dimensions), providing secure mechanical and electrical connections for high-current bus applications.
• Safety margin / voltage proof — Withstands AC 2500 V for 1 minute between terminal and bracket without abnormality (series specification).
• Environmental compliance — RoHS compliant under the stated directive.

Typical Applications

• General-purpose power filtering — Bulk smoothing and ripple reduction in high-voltage power supplies where 450 V rating and high capacitance are required.
• Energy storage in compact equipment — Suited for equipment downsizing where a high-capacitance, high-voltage capacitor in a compact radial can is needed.
• High-voltage DC bus support — Provides bulk capacitance and ripple handling for DC link and bus circuits operating at elevated voltages within the specified temperature range.

Unique Advantages

• High-voltage bulk capacitance: 820 µF at 450 V supplies substantial energy storage without requiring parallel arrays of smaller capacitors.
• Screw-terminal reliability: M5 screw terminals on a radial can ensure robust electrical and mechanical connections for higher-current applications and secure mounting.
• Rated ripple performance: Specified ripple currents at both low and high frequencies (120 Hz and 10 kHz) let designers size capacitors to meet real ripple-loading conditions.
• Proven endurance at elevated temperature: 2000 hours of rated-life performance at 85°C under rated ripple loading supports predictable long-term behavior in warm environments.
• Wide operating range and low-temp stability: −40°C to +85°C operation and defined impedance ratio at low temperature enable use across diverse ambient conditions.
• RoHS compliance: Meets the stated RoHS directive for environmental regulatory requirements.

Why Choose LNY2W821MSEFBN?

The LNY2W821MSEFBN combines high-voltage capability, substantial capacitance, and screw-terminal mounting in a compact radial can, making it a practical choice for designers needing reliable bulk energy storage and ripple handling in space-constrained, high-voltage equipment. Its specified ripple ratings, leakage limits, and endurance at 85°C give clear parameters for thermal and electrical design.

This part is well suited to engineering and procurement teams building general-purpose power systems that require predictable long-term performance, secure terminal connections, and compliance with RoHS directives. Backed by Nichicon’s LNY series specifications, it offers a clear, verifiable basis for component selection in applicable designs.

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