LQS2W221MELA40

The LQS2W221MELA40 is a snap‑in terminal aluminum electrolytic capacitor from Nichicon’s LQS series, specified for high‑speed charge–discharge and continuous operation up to 105°C. It provides 220 µF capacitance at a 450 V rating and is designed for applications that require handling high‑frequency regenerative voltages and fluctuating line conditions.

Typical use cases include AC servomotor drives, general inverters, and rectifier circuits such as voltage‑doubler stages where robust high‑voltage filtering and charge‑discharge endurance are required. The part is RoHS compliant.

Key Features

• Electrical rating: 220 µF capacitance at 450 V rated voltage, polarized design for power applications.
• High‑temperature operation: Rated for continuous operation from −25°C to +105°C.
• Charge–discharge durability: Endurance proven through a charge–discharge test of 50 million cycles at room temperature under specified conditions, with capacitance change within ±20% after testing.
• Endurance life: 3000 hours at 105°C when DC bias plus rated ripple current is applied, meeting specified endurance characteristics.
• Ripple current capability: 1.05 A at 120 Hz (low frequency) and 1.502 A at 50 kHz (high frequency), enabling use in both mains‑frequency and higher‑frequency power stages.
• Leakage specification: Leakage current I ≤ 3√(C·V) µA after 5 minutes at 20°C (C = µF, V = volts), per datasheet formula.
• Impedance stability at low temperature: Z(−25°C)/Z(+20°C) up to 8 for the 350–450 V range (measured at 120 Hz).
• Snap‑in radial can package: Snap‑in mounting for secure through‑hole installation; package described as radial, can – snap‑in. Size: L: 4 × D: 2.5 cm.
• Capacitance tolerance: ±20% (–20% to +20%) at 120 Hz, 20°C.
• Regulatory compliance: Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC servomotor drives: Used for high‑frequency regenerative voltage handling and energy buffering in servo drive power stages.
• General inverters and power converters: Filtering and charge management in inverter DC link circuits exposed to fluctuating voltages.
• Voltage‑doubler rectifier stages: Suited for rectifier circuits requiring robust high‑voltage capacitors in doubled‑voltage topologies.
• Equipment in fluctuating‑voltage environments: Provides stable capacitance and leakage behavior where line voltage varies.

Unique Advantages

• High voltage capability: 450 V rating allows use in high‑voltage DC link and rectifier circuits without up‑rating multiple parts.
• Designed for fast charge–discharge: LQS series construction and validated 50 million cycle charge–discharge endurance support applications with rapid energy transfer events.
• Wide operating temperature: −25°C to +105°C operation and 3000 hour endurance at 105°C provide reliability in thermally demanding installations.
• Measured ripple performance: Specified ripple current at both 120 Hz and 50 kHz supports use across a range of power frequencies and switching conditions.
• Secure snap‑in mounting: Radial snap‑in can simplifies PCB installation and mechanical retention for power modules and assemblies.
• RoHS compliance: Meets current RoHS requirements for environmentally restricted substances.

Why Choose LQS2W221MELA40?

LQS2W221MELA40 is positioned for designers who need a high‑voltage, high‑temperature aluminum electrolytic capacitor with proven charge–discharge endurance and clear ripple‑current specifications. Its 450 V rating, 220 µF capacitance, and validated endurance make it suitable for industrial power conversion and regenerative drive applications where voltage fluctuation and frequent energy cycling are common.

Choosing this Nichicon LQS series component delivers a combination of voltage capability, thermal endurance, and mounting robustness that supports long‑running power systems and simplifies component selection for DC link and rectifier stage designs.

For pricing, lead time, and to request a quote for LQS2W221MELA40, please contact sales or submit a quote request through your preferred procurement channel.