LQS2W820MELZ25

The LQS2W820MELZ25 is a snap-in terminal aluminum electrolytic capacitor rated 450 V with 82 µF capacitance, designed for high-speed charge–discharge and high-frequency power applications. Its compact radial can (φ22 × L25 mm) and snap-in mounting make it suitable for inverter and motor-drive environments where reliable high-voltage energy storage and regenerative handling are required.

Engineered for operation from −25°C to +105°C and compliant with RoHS (2011/65/EU, (EU)2015/863), this part targets applications exposed to voltage fluctuations and demanding charge/discharge cycles, including rectifier and voltage-doubler circuits.

Key Features

• High Voltage Rating: 450 V rated voltage suitable for inverter and regenerative circuits.
• Capacitance: 82 µF nominal capacitance with ±20% tolerance (120 Hz, 20°C) for predictable energy storage.
• Snap-in Radial Package: Radial, can-type snap-in terminals for secure PCB mounting and straightforward assembly.
• Compact Dimensions: Size φ22 × L25 mm provides a small footprint for high-voltage capacitors.
• Wide Operating Temperature: −25°C to +105°C rated range with 3000 hours endurance at 105°C for sustained high-temperature performance.
• High-Frequency and Ripple Performance: Rated ripple current 640 mA at 120 Hz and 915.2 mA at 50 kHz to support high-frequency regenerative loads.
• Charge–Discharge Endurance: Specified endurance under repeated charge–discharge testing (50 million cycles at 6 Hz) with limits on capacitance change, tan δ, and leakage current as defined in the datasheet.
• Leakage Current Specification: Leakage current meets I ≤ 3√(C·V) μA after 5 minutes at 20°C, aiding predictable startup behavior.
• Low-Loss Characteristic: Specified tan δ maximum (up to 0.20 at 450 V, 120 Hz) to control dissipation in high-voltage applications.
• RoHS Compliant: Conforms to RoHS directives (2011/65/EU, (EU)2015/863).

Typical Applications

• AC Servomotor Regenerative Circuits: Handles high-frequency regenerative voltages in motor control systems to support energy recovery and stable DC bus operation.
• General Inverters: Provides bulk energy storage and smoothing in inverter DC-link and snubber networks where voltage fluctuation tolerance is required.
• Voltage-Doubler Rectifiers: Suited for rectifier circuits using voltage-doubler topologies where high DC voltage and reliable capacitance are needed.
• Equipment in Fluctuating Voltage Environments: Designed for systems exposed to variable mains or regenerative transients that demand durable high-voltage capacitors.

Unique Advantages

• High-Voltage Capability: 450 V rating enables use in DC-link, rectifier, and inverter applications without additional series stacking.
• Compact High-Energy Density: 82 µF in a φ22 × 25 mm can conserves board space while delivering required energy for high-voltage circuits.
• Robust Mounting: Snap-in terminals provide reliable mechanical retention for power assemblies and simplify PCB insertion.
• Designed for High-Frequency Operation: Specified ripple current at both 120 Hz and 50 kHz supports performance in regenerative and high-frequency converter environments.
• Long-Term Thermal Endurance: 3000 hours at 105°C endurance rating supports durability in elevated-temperature installations.
• Standards-Conscious Design: RoHS compliance ensures material suitability for regulated markets and corporate sustainability programs.

Why Choose LQS2W820MELZ25?

The LQS2W820MELZ25 combines a high 450 V rating, compact snap-in radial package, and specified high-frequency ripple capability to address demanding inverter, motor-drive, and rectifier applications. Its endurance characteristics and wide operating temperature range make it a practical choice for equipment that experiences frequent charge–discharge cycles and fluctuating voltages.

This capacitor is ideal for engineers designing regenerative drives, DC-link sections in inverters, and high-voltage rectifier circuits who require verifiable endurance, predictable leakage behavior, and a compact footprint. Its RoHS compliance and defined datasheet performance support long-term integration into production systems.

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