LNU2H122MSEFBN

The LNU2H122MSEFBN is a high-voltage aluminum electrolytic capacitor in a screw-terminal radial can package designed for industrial power applications. It delivers 1.2 mF (1200 µF) at a 500 V DC rating with a polarized configuration and is intended for use where high-voltage smoothing, energy buffering and regenerative or inverter duty are required.

Key value comes from its combination of high voltage capability, compact cylindrical package (φ51 × 115 mm / 5.1 × 11.5 cm), screw-terminal mounting and a 105°C operating rating with a 5000-hour load life at 105°C, enabling reliable performance in demanding power-electronics environments.

Key Features

• Capacitance & Voltage — 1.2 mF (1200 µF) nominal capacitance with a 500 V rated DC voltage and ±20% tolerance (120 Hz, 20°C).
• High-temperature operation & lifetime — Rated for operation from −40°C to +105°C with a specified load life of 5000 hours at 105°C under rated ripple conditions.
• Power handling / Ripple current — Ripple current specified as 5.7 A at 120 Hz and 7.98 A at 10 kHz, supporting high-frequency and low-frequency ripple environments.
• Mounting & package — Screw terminal radial can with M5 terminal compatibility and printed marking on a black sleeve; bracket supplied separately.
• Mechanical size — Cylinder dimensions φ51 × 115 mm (diameter × length) / SizeDimension listed as 11.5 × 5.1 cm for length and diameter respectively, suited for chassis-mounted power assemblies.
• Electrical reliability — Insulation resistance greater than 100 MΩ at DC 500 V between terminal and bracket; voltage proof tested at AC 2500 V for 1 minute between terminal and bracket.
• Leakage current specification — After 5 minutes at rated voltage, leakage current is not more than 3√(C·V) µA or 5 mA, whichever is smaller (C: µF, V: V).
• Endurance & stability — Meets defined end-of-life criteria after 5000 hours at 105°C under DC bias plus rated ripple: capacitance change within ±20% of initial, tan δ ≤ 200% of initial, leakage current ≤ initial specified value.

Typical Applications

• Industrial inverter power supplies — Bulk energy storage and smoothing for inverter front-ends and DC bus stabilization.
• AC servomotor and regenerative systems — Handles high-frequency regenerative voltages and rapid charge-discharge cycles in motion-control environments.
• High-voltage power electronics — Filtering and buffering in high-voltage DC circuits where space-efficient, high-voltage capacitors are required.

Unique Advantages

• High-voltage capability in a compact can — 500 V rating delivered in a φ51 × 115 mm radial can provides a space-conscious solution for high-voltage DC link designs.
• Engineered for elevated temperature duty — 105°C rating and 5000-hour load life give predictable aging characteristics for long-term thermal performance.
• Dual-frequency ripple performance — Specified ripple current values at 120 Hz and 10 kHz support both low-frequency rectifier ripple and high-frequency switching environments.
• Robust electrical safety margins — High insulation resistance and AC voltage proofing between terminal and bracket reduce risk in high-voltage assemblies.
• Designed for charge–discharge endurance — Series testing includes long-term charge–discharge cycling to validate behavior under repetitive switching and regenerative loads.
• RoHS compliant — Conforms to RoHS requirements for environmental compliance.

Why Choose LNU2H122MSEFBN?

The LNU2H122MSEFBN is positioned for engineers specifying high-voltage DC-link and regenerative power designs that require a durable, high-temperature aluminum electrolytic solution with screw-terminal mounting. Its combination of 500 V rating, 1200 µF capacitance, measured ripple-current capability at both low and high frequencies, and defined 5000-hour life at 105°C provides a clear, verifiable performance profile for industrial inverter, servomotor and power-electronics applications.

This capacitor suits design teams seeking predictable end-of-life behavior, established electrical safety margins and a compact radial can package for chassis or bracket mounting. The product is appropriate for projects where long-term thermal endurance and verified ripple performance matter for system reliability.

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