LQS2W221MELB30

The LQS2W221MELB30 is a snap‑in terminal aluminum electrolytic capacitor designed for high‑speed charge–discharge applications. It combines a 220 µF capacitance with a 450 V rated voltage and a robust radial can snap‑in package for secure mounting in power assemblies.

Engineered for power electronics, the LQS series is suited to high‑frequency regenerative voltage environments such as AC servomotors and inverters, equipment operating in areas with fluctuating supply voltage, and rectifier circuits including voltage‑doubler topologies.

Key Features

• Rated Performance — 220 µF capacitance at 450 V DC with ±20% tolerance, polarized for DC power applications.
• High‑temperature operation — Rated for operation from –25°C to +105°C with a specified endurance of 3000 hours at 105°C.
• High‑speed charge–discharge design — Series specification targets high‑speed charge/discharge cycles, with endurance validated for repeated charge‑discharge cycling (50 million cycles at 6 Hz under series test conditions).
• Ripple current capability — Specified ripple current: 1.05 A at 120 Hz and 1.502 A at 50 kHz, supporting both low‑ and high‑frequency ripple environments.
• Leakage current specification — Defined leakage current limit I ≤ 3√(C·V) µA after 5 minutes at 20°C (C in µF, V in V), enabling predictable standby and loss characteristics.
• Snap‑in radial can package — Snap‑in terminal mounting for secure mechanical and electrical connection in PCB assemblies; physical size approximately 3 × 3 cm (D × L).
• Regulatory compliance — RoHS‑compliant to 2011/65/EU and (EU)2015/863.

Typical Applications

• AC servomotor drives — Handles high‑frequency regenerative voltages and frequent charge/discharge events in motion control power stages.
• General inverters — Provides bulk energy storage and ripple handling for inverter DC link circuits in fluctuating supply environments.
• Voltage‑doubler rectifiers — Suitable for rectifier circuits where higher DC bus voltages and fast charge/discharge are present.
• Power electronics in variable supply areas — Robust against voltage fluctuation scenarios thanks to high rated voltage and endurance characteristics.

Unique Advantages

• High voltage headroom — 450 V rating accommodates elevated DC bus requirements without up‑rating multiple components.
• Designed for repetitive cycling — Series endurance testing for 50 million charge/discharge cycles demonstrates suitability for applications with frequent energy transfer.
• Broad ripple frequency support — Specified ripple current at both 120 Hz and 50 kHz supports low‑ and high‑frequency power stages, aiding thermal and electrical design predictability.
• Thermal robustness — Rated to +105°C with a 3000‑hour endurance at that temperature, supporting sustained operation in elevated ambient conditions.
• Predictable leakage behavior — Leakage current limit given by I ≤ 3√(C·V) µA after initial charge ensures consistent quiescent loss expectations across designs.
• RoHS compliance — Conforms to current RoHS directives for use in restricted‑substance environments.

Why Choose LQS2W221MELB30?

The LQS2W221MELB30 is positioned for engineers designing mid‑ to high‑voltage power subsystems that require durable energy storage, frequent charge/discharge capability, and reliable performance at elevated temperatures. With a 450 V rating, 220 µF capacitance, snap‑in radial package, and validated endurance characteristics, it addresses common needs in inverter and motor‑drive DC link applications where voltage fluctuation and regenerative events are expected.

This capacitor is suitable for designs where predictable ripple handling, long‑term thermal stability, and series‑level charge/discharge endurance reduce redesign risk and simplify qualification for power electronics assemblies.

If you would like pricing, availability, or a formal quote for LQS2W221MELB30, please request a quote or contact sales to submit a quote request.