LQSW6331MELA50

The LQSW6331MELA50 is a snap‑in terminal aluminum electrolytic capacitor designed for high‑speed charge–discharge up to 105°C. With a rated voltage of 420 V and 330 µF capacitance, it targets power conversion and motor drive systems where high frequency regenerative voltage and fluctuating line conditions occur.

Engineered for industrial inverter and AC servomotor environments, this polarized, radial can capacitor offers documented endurance under elevated temperature and repeated charge–discharge cycles, along with RoHS compliance.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance at a rated voltage of 420 V suitable for bulk energy storage in medium‑voltage power stages.
• High‑Temperature Operation — Rated for operation from −25°C to +105°C with a guaranteed endurance of 3000 hours at 105°C under DC bias plus rated ripple current.
• Charge–Discharge Endurance — Specified for high‑speed charge–discharge behavior; after 50 million cycles (6 Hz, room temperature, charge‑discharge voltage = rated voltage + 0.35 V) capacitance remains within ±20% of initial value.
• Ripple Current Performance — Rated ripple current of 1.42 A at 120 Hz and 2.031 A at 50 kHz to support both low and high frequency applications.
• Reliability Metrics — Leakage current specified as I ≤ 3√(C·V) (μA) after 5 minutes at 20°C; endurance limits include tan δ and leakage criteria after life test per datasheet.
• Package & Mounting — Snap‑in radial can (snap‑in terminal type) for robust vertical mounting and secure mechanical retention in power assemblies.
• RoHS Compliance — Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).
• Marking — White print on black sleeve for clear identification on assemblies.

Typical Applications

• Industrial Drives and Inverters — Supports high frequency regenerative voltage in AC servomotor and general inverter systems, helping stabilize DC bus energy during motor braking and regeneration.
• Voltage‑Doubler Rectifier Circuits — Suited for rectifier stages using voltage doubler topologies where higher DC voltages and ripple handling are required.
• Equipment in Fluctuating Voltage Environments — Designed for systems exposed to line voltage variability, providing energy buffering and improved tolerance to transient conditions.

Unique Advantages

• Designed for Repetitive Charge–Discharge: Endurance proven to 50 million charge–discharge cycles (specified test), which supports long service life in pulse‑intensive power systems.
• High Temperature Endurance: 3000 hours at 105°C under rated conditions ensures consistent performance in elevated ambient or internally hot environments.
• Dual‑Frequency Ripple Capability: Rated ripple currents at both 120 Hz and 50 kHz allow designers to reliably size the capacitor for mains‑frequency and high‑frequency switching environments.
• Clear Reliability Limits: Specified limits for capacitance change, tan δ, and leakage current after endurance tests give measurable criteria for design validation.
• Robust Mechanical Mounting: Snap‑in radial can provides stable mounting for power modules and simplifies installation on power PCBs.

Why Choose LQSW6331MELA50?

The LQSW6331MELA50 combines a high 420 V rating and substantial 330 µF capacitance with a snap‑in radial package engineered for demanding power conversion tasks. Its specified ripple performance, charge–discharge endurance, and 105°C life rating make it suitable for inverter, motor drive, and rectifier power stages where repeated energy cycling and elevated temperature operation are expected.

This part is aimed at designers and procurement teams building industrial power electronics who require verifiable endurance and clear electrical limits. RoHS compliance and standard marking support regulatory needs and straightforward identification in assembly and service.

For pricing, availability, and to request a quote for LQSW6331MELA50, please contact sales or submit a request so we can assist with lead times and order options.