LQS2G331MELA45

The LQS2G331MELA45 is a Nichicon LQS series snap‑in aluminum electrolytic capacitor rated at 330 µF and 400 V. It is a snap‑in terminal type designed for high‑speed charge–discharge operation and continuous use up to 105°C.

Engineered for industrial power electronics, this part is suited for high‑frequency regenerative voltage in AC servomotors and general inverters, use in voltage‑fluctuating environments, and rectifier circuits such as voltage doublers. It is RoHS compliant.

Key Features

• Capacitance and Voltage: 330 µF capacitance at 400 V rated voltage for bulk energy storage in power circuits.
• Snap‑in Terminal Package: Radial can with snap‑in mounting for secure panel or chassis installation and robust electrical connection.
• High‑Temperature Operation: Rated for operation from −25°C to +105°C with endurance specified as 3000 hours at 105°C.
• High‑Speed Charge–Discharge: Designed for high speed charge–discharge behavior; series specification includes endurance after 50 million charge–discharge cycles (6 Hz) under defined test conditions.
• Ripple Current Capability: Ripple handling of 1.44 A at 120 Hz and 2.059 A at 50 kHz to support filtering and regenerative functions in power electronics.
• Leakage Current Specification: Leakage current meets I ≤ 3√(C·V) μA after 5 minutes at 20°C (C: µF, V: V), enabling predictable self‑discharge behavior.
• Low‑Temperature Impedance Stability: Impedance ratio Z(−25°C)/Z(+20°C) specified (value 8 for 350–450 V range), supporting performance across the operating temperature range.
• RoHS Compliance: Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Motor Drives: Suited for high‑frequency regenerative voltage in AC servomotors and drive inverters where rapid charge–discharge and thermal endurance are required.
• Power Inverters and Converters: Used in inverter DC link and energy buffering stages, including rectifier circuits and voltage doubler configurations.
• Equipment in Voltage‑Fluctuating Areas: Designed for systems operating in environments with frequent voltage variations, providing stable capacitance and leakage behavior.

Unique Advantages

• Designed for High‑Speed Cycling: Specified endurance for 50 million charge–discharge cycles (6 Hz) under defined conditions, supporting applications with frequent energy transfers.
• Wide Thermal Capability: Operation across −25°C to +105°C with a 3000‑hour endurance rating at 105°C for reliability in elevated temperature installations.
• Measurable Ripple Performance: Published ripple current ratings at both low and high frequencies allow engineers to size capacitors according to switching and ripple requirements.
• Predictable Leakage Behavior: Leakage current defined by I ≤ 3√(C·V) μA provides a quantifiable parameter for power‑down and standby calculations.
• Robust Mounting: Snap‑in radial can package ensures mechanically secure mounting for high‑vibration or chassis‑mounted power electronics.
• Regulatory Compliance: RoHS conformity supports deployment in regions requiring hazardous‑substance compliance.

Why Choose LQS2G331MELA45?

The LQS2G331MELA45 combines a 330 µF, 400 V rating with a snap‑in aluminum electrolytic package engineered for high‑speed charge–discharge and sustained operation up to 105°C. Its specified ripple current performance, leakage current limits, and endurance characteristics make it a practical choice for industrial power electronics designers who need predictable electrical behavior under thermal and cyclic stress.

This part is well suited for designers of motor drives, inverters, and power conversion systems operating in voltage‑variable environments. Its clear specifications and RoHS compliance support long‑term procurement and integration into regulated equipment platforms.

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