LQS2G151MELZ35

The LQS2G151MELZ35 is an aluminum electrolytic capacitor in Nichicon’s LQS series, featuring a snap-in terminal design and high-speed charge–discharge capability rated to operate up to 105°C. It is polarized and optimized for high-voltage applications.

Designed for industrial power electronics, the LQS2G151MELZ35 is suited to handle high-frequency regenerative voltages and fluctuating supply conditions commonly found in AC servomotor drives, general inverters and voltage-doubler rectifier circuits, while providing temperature and endurance performance for demanding duty cycles.

Key Features

• Electrical ratings — 150 µF capacitance at 400 V nominal voltage with ±20% tolerance, suitable for high-voltage DC bus and energy-storage roles.
• High ripple performance — Rated ripple current of 850 mA at 120 Hz and 1.216 A at 50 kHz to support both low- and high-frequency ripple conditions.
• High-temperature operation — Operating temperature range from −25°C to +105°C, with endurance specified for 3000 hours at 105°C under rated conditions.
• Charge–discharge endurance — Specified to withstand 50 million charge–discharge cycles (6 Hz test condition) with capacitance change within ±20% of initial value, supporting repetitive energy injection and recovery scenarios.
• Leakage and dissipation characteristics — Leakage current defined by I ≤ 3√CV (μA) after 5 minutes at 20°C; tan δ maximum 0.15 at 400 V (measured at 120 Hz, 20°C).
• Snap-in radial can package — Snap-in terminal, radial can construction (size: L 3.5 × D 2.2 cm) for secure PCB mounting in power assemblies.
• RoHS compliant — Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial motor drives — Energy buffering and regenerative-voltage handling in AC servomotor and inverter systems operating at high frequency.
• Inverters and power conversion — DC bus and smoothing duties in general inverters, especially where voltage fluctuation resilience is required.
• Rectifier circuits — Suited for voltage-doubler rectifier configurations where high-voltage capacitance and charge–discharge endurance are required.

Unique Advantages

• Designed for regenerative loads — Charge–discharge endurance and high-frequency ripple ratings address repeated energy injection from motor regeneration and similar events.
• High-temperature durability — 3000-hour endurance at 105°C supports extended operation in hot ambient environments common to power electronics racks.
• Broad ripple-frequency capability — Separate ripple current ratings at 120 Hz and 50 kHz provide quantifiable performance for both mains-frequency and high-frequency switching environments.
• Predictable leakage and dissipation — Leakage current defined by a specific formula and controlled tan δ simplify thermal and loss budgeting in designs.
• Robust low-temperature behavior — Specified performance down to −25°C with defined impedance ratio stability for designs exposed to wide temperature swings.
• Compliance-ready — RoHS conformity supports regulatory requirements for deployment in global markets.

Why Choose LQS2G151MELZ35?

The LQS2G151MELZ35 positions itself as a reliable high-voltage, high-temperature aluminum electrolytic solution for power-electronics designers who need durable capacitors for regenerative and fluctuating-voltage applications. Its combination of 400 V rating, 150 µF capacitance, validated charge–discharge endurance, and defined ripple performance makes it suitable for inverter, motor drive, and rectifier circuits that demand repeatable energy handling and thermal resilience.

For engineers specifying components for commercial and industrial power assemblies, this part offers clear, verifiable electrical and environmental data to support design decisions, lifetime planning and thermal management considerations.

Request a quote or contact sales for pricing, lead-time and availability for LQS2G151MELZ35.