LQSW6151MELA30

The LQSW6151MELA30 is a snap-in terminal aluminum electrolytic capacitor engineered for high-speed charge–discharge duty. It delivers 150 µF capacitance at a 420 V rated voltage and is optimized for applications that require durable high-voltage energy buffering.

Targeted use cases include industrial power electronics such as AC servomotors and general inverters, equipment operating in voltage-fluctuating environments, and rectifier circuits such as voltage doublers. Key value propositions include high-voltage capability, high ripple handling across frequency, charge–discharge endurance, and operation up to 105°C.

Key Features

• Nominal Capacitance — 150 µF with ±20% tolerance (measured at 120 Hz, 20°C).
• Rated Voltage — 420 V DC for high-voltage DC link and energy storage applications.
• High-speed charge–discharge — Designed for repeated charge–discharge cycles; endurance verified for 50 million charge–discharge cycles at room temperature (6 Hz, charge–discharge voltage = rated voltage + 0.35 V).
• Wide operating temperature — Specified for continuous operation from –25°C to +105°C.
• Guaranteed endurance — 3000 hours at 105°C when subjected to rated DC bias plus rated ripple current, with defined limits on capacitance change, dissipation factor, and leakage.
• Ripple current performance — 840 mA at 120 Hz and 1.201 A at 50 kHz to support both low-frequency and high-frequency ripple conditions.
• Leakage and dissipation characteristics — Leakage current specified as I ≤ 3√CV (µA) after 5 minutes at 20°C; tan δ max 0.15 at 420 V (120 Hz, 20°C).
• Package & mounting — Radial can with snap-in terminals for secure board mounting; compact dimensions (L: 3 × D: 2.5 cm).
• Environmental compliance — Conforms to RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial drives and inverters — Energy buffering and DC-link smoothing for AC servomotor and general inverter systems where frequent charge–discharge events occur.
• Regenerative power circuits — Suited to high-frequency regenerative voltages encountered in motor regeneration and energy recovery circuits.
• Voltage-doubler rectifiers — Use in rectifier circuits that require reliable high-voltage smoothing and surge handling.
• Equipment in fluctuating-voltage environments — Provides stable capacitance and controlled leakage under variable supply conditions.

Unique Advantages

• High-voltage capability: 420 V rating enables use in DC-link and high-voltage energy storage applications without additional series components.
• Proven charge–discharge endurance: Endurance testing to 50 million cycles supports designs with intensive regenerative or pulsed loads.
• Thermal robustness: Continuous operation to 105°C with 3000-hour endurance under rated conditions supports long-term reliability in hot operating environments.
• Broad ripple handling: Specified ripple ratings at 120 Hz and 50 kHz let designers account for both line-frequency and high-frequency switching ripple.
• Secure PCB mounting: Snap-in radial can format simplifies assembly and provides mechanical stability for power-electronics boards.
• Regulatory compliance: RoHS conformity ensures suitability for designs requiring restricted-substance compliance.

Why Choose LQSW6151MELA30?

LQSW6151MELA30 is positioned for engineers designing high-voltage power electronics that demand repeated charge–discharge performance, thermal resilience, and clear electrical specifications. Its combination of 420 V rating, high ripple-current capability, and validated endurance makes it suitable for inverter, regenerative and rectifier circuits where predictable behavior under stress is required.

For projects that require a compact, snap-in, high-voltage capacitor with defined lifetime and leakage characteristics, the LQSW6151MELA30 offers verifiable electrical and environmental attributes to help ensure design robustness and regulatory compliance.

Request a quote or submit a specification inquiry for LQSW6151MELA30 to discuss availability, pricing, and lead times with our sales team.