LQSW6101MELZ25

The LQSW6101MELZ25 is an aluminum electrolytic, snap‑in terminal capacitor from Nichicon's LQS series engineered for high‑speed charge–discharge applications. It provides 100 µF capacitance at a 420 V rating with polarization and is optimized for high‑frequency regenerative and inverter environments.

Designed for demanding industrial power electronics, this component targets AC servomotor regenerative circuits, general inverters and rectifier/doubler circuits where voltage fluctuation, high ripple and sustained elevated temperature operation are common.

Key Features

• Capacitance & Voltage: 100 µF nominal capacitance at a 420 V rated voltage, with capacitance tolerance ±20% (120 Hz, 20°C).
• High‑temperature capability: Rated for operation from −25°C to +105°C and endurance tested for 3000 hours at 105°C under D.C. bias plus rated ripple current.
• High‑speed charge–discharge design: Engineered for high frequency regenerative voltage use; endurance validated by a 50 million charge–discharge cycle test (cycle: 6 Hz, rated voltage + 0.35 V) with specified limits on capacitance, tan δ and leakage current.
• Ripple current ratings: 660 mA at 120 Hz and 943.8 mA at 50 kHz, supporting both low‑frequency and high‑frequency ripple environments.
• Loss and leakage characteristics: Tangent of loss angle (tan δ) specified at a maximum of 0.15 for 420 V (measurement: 120 Hz, 20°C). Leakage current meets I ≤ 3√(C·V) μA after 5 minutes at 20°C.
• Package & mounting: Snap‑in radial can package for secure board mounting and robust electrical connection in power modules and assemblies.
• Environmental compliance: RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• AC servomotor regenerative circuits: Handles high‑frequency regenerative voltages and repeated charge‑discharge cycles common in motor drive feedback paths.
• General inverters: Provides bulk energy storage and ripple suppression in inverter DC link stages operating at elevated temperatures and fluctuating voltages.
• Rectifier/voltage doubler circuits: Suited for rectifier configurations where stable high‑voltage capacitance and charge handling are required.
• Equipment exposed to fluctuating voltage: Robust leakage, tan δ and endurance specifications support use where supply variations and frequent cycling occur.

Unique Advantages

• High‑voltage capability: A 420 V rated voltage enables use in many DC link and high‑voltage power applications without additional series stacking.
• Designed for high‑frequency ripple: Specified ripple currents at both 120 Hz and 50 kHz provide quantified performance for designers targeting switching and regenerative systems.
• Proven endurance under cycling: Endurance testing includes 50 million charge–discharge cycles and 3000 hours at 105°C, giving measurable reliability metrics for long‑life power designs.
• Measurable loss and leakage limits: Clear tan δ and leakage current specifications allow predictable thermal and leakage behavior in system-level design and worst‑case analysis.
• Snap‑in mounting for secure integration: Radial snap‑in can simplifies assembly and provides a robust mechanical and electrical connection for power boards.
• Regulatory compliance: RoHS conformity supports environmental requirements for commercial and industrial product lines.

Why Choose LQSW6101MELZ25?

The LQSW6101MELZ25 positions itself as a specification‑driven choice for engineers building power electronics that require reliable high‑voltage capacitance, high‑frequency charge‑discharge capability and validated endurance at elevated temperatures. Its defined ripple current ratings, tan δ limits and leakage formula give designers measurable parameters for thermal, lifetime and ripple handling calculations.

This part is well suited to industrial inverter, motor drive and rectifier applications where long-term stability, RoHS compliance and snap‑in board integration are important. Select the LQSW6101MELZ25 when you need a proven, specification‑backed capacitor for demanding power systems.

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