LNY2G392MSEF

The LNY2G392MSEF from Nichicon is a screw-terminal aluminum electrolytic capacitor offering 3.9 mF (3900 µF) at a 400 V rating in a radial can with screw terminals (φ51×170L). It is designed for general-purpose power applications where compact, high-capacitance energy storage and robust electrical connections are required.

Key value propositions include high-voltage capability, substantial ripple-current handling, and a load life specification tailored for continuous operation at elevated temperatures—features that support equipment downsizing and reliable DC-bus energy smoothing.

Key Features

• Capacitance & Voltage 3.9 mF rated capacitance at 400 V provides substantial bulk energy storage for DC bus and power-filtering applications.
• Screw-Terminal Package Radial can with M5 screw terminals (φ51 case) enables secure, high-current connections and straightforward mounting with separate brackets.
• Operating Temperature Range Specified for –40 °C to +85 °C to support a wide range of ambient conditions.
• Load Life Endurance Rated for 2000 hours with application of ripple current at 85 °C, with performance criteria referenced after restoration to 20 °C.
• Ripple Current Capability Supports 13.8 A at 120 Hz and 19.32 A at 10 kHz, enabling effective handling of both low- and high-frequency ripple components.
• Leakage Current Specification Leakage current after 5 minutes is limited to not more than 3√(C·V) µA or 5 mA (whichever is smaller) at 20 °C.
• Impedance and Low-Temperature Stability Impedance ratio Z(−40 °C)/Z(+20 °C) is specified as 12, providing defined behavior in cold-start conditions.
• Safety & Insulation Insulation resistance is greater than 100 MΩ at DC 500 V between terminal and bracket; voltage proof is AC 2500 V for 1 minute between terminal and bracket.
• Compliance RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• Power Supplies Bulk energy storage and smoothing on high-voltage DC rails where 400 V rated capacitance is required.
• Industrial Equipment General-purpose DC-bus support in industrial systems that benefit from screw-terminal mounting and robust connections.
• Equipment Downsizing Solutions that require higher capacitance density to reduce overall system volume while maintaining ripple-current performance.

Unique Advantages

• High Voltage, High Capacitance: 3.9 mF at 400 V provides significant energy storage for demanding DC applications without resorting to multiple smaller capacitors.
• Robust Screw-Terminal Connections: M5 screw terminals and radial can packaging deliver secure mechanical and electrical interfaces for high-current installations.
• Defined High-Temperature Endurance: 2000-hour load life at 85 °C under rated ripple conditions gives designers predictable long-term performance.
• Wide Ripple-Current Bandwidth: Rated ripple current values at 120 Hz and 10 kHz allow the capacitor to address both mains-frequency and higher-frequency switching ripple.
• Clear Electrical Safety Metrics: Explicit insulation resistance and voltage-proof ratings simplify safety assessments for terminal-to-bracket isolation.
• RoHS Compliance: Conforms to current RoHS directives for material compliance in regulated markets.

Why Choose LNY2G392MSEF?

The LNY2G392MSEF positions itself as a reliable, high-voltage bulk capacitor for designs that demand large capacitance in a compact radial can with screw-terminal connectivity. Its combination of 3.9 mF at 400 V, specified ripple-current performance at multiple frequencies, and a 2000-hour load-life rating at 85 °C makes it suitable for engineers seeking predictable endurance and electrical behavior in general-purpose power systems.

Manufactured by Nichicon as part of the LNY series, this capacitor is intended for applications where robust connections, clear electrical specifications, and RoHS compliance are required. It is well suited to design teams targeting equipment downsizing while maintaining defined performance margins and reliability metrics.

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