LQSW6221MELA35

The LQSW6221MELA35 is a snap‑in terminal aluminum electrolytic capacitor rated at 220 µF and 420 V. Designed for high‑speed charge/discharge and high‑voltage applications, it targets power electronics systems that require robust energy buffering and regenerative voltage handling.

Typical use cases include AC servomotor regenerative circuits, general inverter power stages, rectifier circuits such as voltage doublers, and equipment operating in voltage‑fluctuating environments. The part is RoHS compliant and specified for operation from −25°C to 105°C.

Key Features

• Capacitance and Voltage — 220 µF nominal capacitance with a 420 V rated voltage and ±20% tolerance, providing energy storage appropriate for high‑voltage power circuits.
• High‑frequency charge/discharge — Engineered for high‑speed charge/discharge behavior and specified ripple current performance at both low and high frequencies.
• Ripple current — Rated ripple current of 1.05 A at 120 Hz and 1.502 A at 50 kHz to support both line‑frequency and high‑frequency switching environments.
• Thermal endurance — Specified operating temperature range of −25°C to 105°C with a rated endurance of 3000 hours at 105°C.
• Robust endurance testing — Meets charge/discharge endurance criteria after extended cycling as defined in the series datasheet (50 million charge/discharge cycles at defined test conditions).
• Mounting and package — Snap‑in radial can package (φ25 × 35 mm) for secure chassis or PCB mounting in power assemblies.
• Polarized design — Polarized capacitor suitable for DC bus and rectifier applications.
• Environmental compliance — Compliant with RoHS directives (2011/65/EU, (EU)2015/863).

Typical Applications

• AC servo drives — Used in regenerative voltage circuits to absorb and deliver energy during motor braking and recovery.
• Industrial inverters — Provides DC‑bus smoothing and buffering for general inverter power stages subject to switching and voltage variation.
• Voltage doubler rectifiers — Serves as the energy storage/filtration element in rectifier circuits such as voltage doublers.
• Equipment in fluctuating voltage areas — Suited for systems exposed to variable supply conditions where stable high‑voltage capacitance is required.

Unique Advantages

• High‑voltage capability: 420 V nominal rating supports energy storage and filtering in high‑voltage DC applications.
• Designed for fast charge/discharge: Series engineering and ripple current ratings address the demands of high‑speed regenerative and switching circuits.
• Thermal resilience: Rated for operation to 105°C with 3000 hours endurance at that temperature, enabling reliable performance in elevated ambient conditions.
• Proven endurance behavior: Tested for extended charge/discharge cycling to maintain capacitance, dissipation, and leakage characteristics over life.
• Secure snap‑in mounting: Radial snap‑in can (φ25 × 35 mm) for reliable mechanical retention in power assemblies.
• Regulatory compliance: RoHS conformity supports deployment in regions requiring restricted substance compliance.

Why Choose LQSW6221MELA35?

The LQSW6221MELA35 combines a high 420 V rating, 220 µF capacitance, and explicit design for high‑speed charge/discharge to meet the needs of power electronics engineers designing regenerative drives, inverters, and rectifier stages. Its rated ripple current at both 120 Hz and 50 kHz and endurance specifications provide verifiable performance for applications exposed to switching stress and fluctuating voltages.

Choose this capacitor when you need a polarized, snap‑in aluminum electrolytic solution with documented thermal endurance and lifecycle behavior suitable for industrial power systems that demand predictable electrical and mechanical performance.

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