LQR2G152MSEF

The LQR2G152MSEF is an aluminum electrolytic capacitor from Nichicon's LQR series, designed as a screw-terminal radial can for high-speed charge–discharge applications. It is a 1500 µF, 400 V polarized capacitor rated for operation from −25 °C to +85 °C.

Engineered for industrial power electronics, this part is suited to high-frequency regenerative voltages for AC servomotors and general inverters, equipment exposed to fluctuating supply voltages, and rectifier circuits such as voltage doublers. Key value comes from its high ripple-current capability, extended endurance at elevated temperature, and screw-terminal mechanical integration for robust mounting and connection.

Key Features

• High capacitance and voltage: 1500 µF nominal capacitance at a 400 V rated voltage to support energy storage and smoothing in high-voltage power circuits.
• High-speed charge–discharge design: Specifically characterized for high-speed charge–discharge behavior and regenerative applications in motor drives and inverters.
• Robust ripple-current capability: Rated ripple current of 7.5 A at 120 Hz and 10.5 A at 10 kHz to handle both line-frequency and high-frequency ripple with reduced thermal stress.
• Endurance at elevated temperature: Specified for 5000 hours at 85 °C under rated conditions; meets endurance criteria for capacitance, tan δ and leakage current after the test.
• Wide operating range and tolerance: Operates from −25 °C to +85 °C with a capacitance tolerance of ±20% (at 120 Hz, 20 °C).
• Leakage current specification: After 5 minutes at rated voltage, leakage current does not exceed 3√V (µA) or 5 mA, whichever is smaller (at 20 °C), providing predictable standby behavior.
• Screw-terminal radial can package: Radial can with screw terminals for secure, high-current connections and straightforward mechanical mounting.
• RoHS compliant: Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC servomotor and inverter systems: Supports high-frequency regenerative voltages and energy absorption in servo and inverter power stages.
• Regenerative and voltage-doubler rectifiers: Suitable for rectifier circuits and voltage-doubler configurations where high-voltage capacitance is required.
• Industrial equipment in fluctuating-voltage environments: Designed for use where supply voltages vary, providing smoothing and energy buffering.
• High-speed charge–discharge systems: Applicable in applications that require repeated rapid charge and discharge cycles, backed by specified charge–discharge endurance testing.

Unique Advantages

• High ripple handling across frequencies: Dual ripple-current ratings (7.5 A at 120 Hz, 10.5 A at 10 kHz) address both low- and high-frequency stress in power electronics designs.
• Proven endurance at elevated temperature: 5000-hour endurance at 85 °C ensures stable capacitance, tan δ, and leakage current after long-term high-temperature operation.
• Charge–discharge durability: Endurance verified under repeated charge–discharge cycles, providing design confidence for regenerative and dynamic-load applications.
• Secure, serviceable connections: Screw-terminal radial can package simplifies high-current wiring and mechanical mounting in industrial assemblies.
• Predictable leakage behavior: Clear leakage current limits (3√V µA or 5 mA after 5 minutes at 20 °C) make power-budgeting and standby-loss calculations straightforward.
• Regulatory compliance: RoHS conformity supports deployment in markets requiring restricted-substance compliance.

Why Choose LQR2G152MSEF?

The LQR2G152MSEF combines a high 400 V rating with 1500 µF capacitance and explicit high-frequency ripple-current capabilities, making it well suited to industrial power-electronics roles such as inverter DC buses, regenerative braking circuits, and rectifier stages. Its screw-terminal radial can package provides reliable mechanical and electrical connections for high-current installations.

Backed by Nichicon's LQR series specifications for endurance and charge–discharge behavior, this capacitor is a practical choice for engineers seeking predictable performance under thermal and dynamic stress, along with RoHS compliance for regulated environments.

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