LNUN7332MTEH

The LNUN7332MTEH is an aluminum electrolytic capacitor in a screw-terminal (stud bolt mount) can package, designed for high-voltage industrial power applications. It delivers a 3.3 mF rated capacitance with a DC rated voltage of up to 525 V and an operating temperature range of –40°C to +105°C.

Engineered for inverter circuitry and high-frequency regenerative environments, this capacitor offers long endurance under ripple-loading conditions and compact sizing compared with earlier LNT models, making it suitable for industrial power supplies, AC servomotor regenerative systems and general inverter designs.

Key Features

• High Voltage Capability: Rated up to DC 525 V to support high-voltage inverter and regenerative power circuits.
• Capacitance and Tolerance: 3.3 mF nominal capacitance with ±20% tolerance (measured at 120 Hz, 20°C).
• Temperature and Endurance: Specified for –40°C to +105°C operation with a load-life rating of 5000 hours at 105°C under rated ripple conditions.
• High Ripple Current Handling: Supports 12.1 A ripple at 120 Hz and 16.94 A at 10 kHz, enabling robust performance under AC loading and high-frequency charge–discharge cycles.
• Screw Terminal / Stud Bolt Mount: Radial can with screw terminals (stud bolt mount) for secure power connections and easy installation in power assemblies.
• Compact High-Voltage Form Factor: Smaller physical footprint compared with previous series while maintaining high-voltage ratings — dimensions L: 14 cm × D: 7.62 cm with a seated height of up to 5.512 inch.
• Polarized Design: Polar capacitor construction for DC bus and DC link applications.
• Leakage Current Limit: After 5 minutes at rated voltage, leakage current is limited to 3√(C·V) µA or 5 mA, whichever is smaller, for predictable behavior during system startup and charge cycles.
• Electrical Safety Checks: Insulation resistance greater than 100 MΩ at DC 500 V between terminal and bracket; voltage withstand verified at AC 2500 V for 1 minute.
• RoHS Compliant: Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Inverters: Used on DC link stages and power supply rails for inverter circuitry where high-voltage DC energy storage is required.
• AC Servo Drives / Regenerative Systems: Suited to high-frequency regenerative voltages and fast charge–discharge loading in AC servomotors and drive systems.
• Industrial Power Supplies: Applied in power supply modules for industrial equipment that require sustained ripple handling at elevated temperatures.
• High-Frequency Power Conditioning: Useful where elevated ripple current at high frequencies (up to 10 kHz) and durability over long operating life are important.

Unique Advantages

• High-Voltage, Compact Design: Delivers DC 525 V capability in a smaller-sized LNU series can, enabling space-efficient high-voltage energy storage.
• Long Thermal Endurance: Rated for 5000 hours at 105°C with rated ripple current, providing predictable lifetime under heavy thermal and electrical stress.
• Robust Ripple Performance: High ripple current ratings at both low and high frequencies support demanding inverter and regenerative workloads.
• Secure Mechanical Mounting: Screw terminal / stud bolt mount offers reliable, low-resistance connections for high-current installations.
• Validated Electrical Integrity: Insulation resistance and AC voltage proof requirements give clear pass/fail criteria for assembly and QA testing.
• Regulatory Compliance: RoHS conformity ensures compatibility with environmentally restricted designs and procurement requirements.

Why Choose LNUN7332MTEH?

LNUN7332MTEH is positioned for engineers specifying high-voltage electrolytic energy storage in industrial inverter, motor drive and regenerative power systems. With a 525 V rating, high ripple current capability across 120 Hz and 10 kHz, and a 5000-hour life at 105°C, it provides a balance of voltage handling, thermal endurance and compact packaging for demanding power electronics designs.

This part is suitable for teams seeking a proven aluminum electrolytic solution with clear electrical limits (leakage, insulation resistance, voltage proof) and RoHS compliance — helping reduce integration risk and simplify validation in industrial power modules.

Request a quote or contact sales to discuss pricing, availability and integration details for LNUN7332MTEH.