LQR2W182MSEGBN

The LQR2W182MSEGBN from Nichicon is a screw‑terminal aluminum electrolytic capacitor rated at 1.8 mF (1800 µF) and 450 V. It is built for high‑speed charge/discharge and high‑frequency regenerative environments.

Designed for power electronics, the capacitor is suited for high‑frequency regenerative voltage in AC servomotors and general inverters, equipment operating in voltage‑fluctuating areas, and rectifier circuits such as voltage doublers. Key value comes from its high voltage rating, robust ripple handling and endurance characteristics.

Key Features

• Capacitance & Voltage: 1.8 mF (1800 µF) nominal capacitance with a 450 V rated voltage and ±20% tolerance at 120 Hz, 20°C.
• Screw‑terminal mounting: Radial can package with screw terminals for secure electrical and mechanical connections in power assemblies.
• High‑frequency performance: Low equivalent series resistance (ESR) of 1.6 mΩ measured at 100 kHz and a high‑frequency ripple current rating of 11.06 A at 10 kHz.
• Low‑frequency ripple capability: Ripple current specification of 7.9 A at 120 Hz for bulk smoothing and rectifier circuits.
• Operating temperature & endurance: Rated for −25°C to +85°C with an endurance specification of 5000 hours at 85°C under rated ripple and DC bias.
• Charge‑discharge durability: Endurance against repeated charge/discharge cycling as defined in the datasheet (20 million cycles at specified ΔV and 3 Hz cycle).
• Leakage current control: After 5 minutes at rated voltage, leakage is limited to 3√(V) µA or 5 mA, whichever is smaller (at 20°C), per datasheet specification.
• RoHS compliant: Meets RoHS directive (2011/65/EU,(EU)2015/863).

Typical Applications

• AC servomotor drives: Handles high‑frequency regenerative voltage in servo systems where fast charge/discharge behavior is required.
• General inverters: Provides bulk energy storage and ripple suppression for inverter DC link and regenerative operation.
• Equipment in voltage‑fluctuating areas: Suited for systems exposed to unstable mains or variable supply conditions where voltage swings are common.
• Rectifier circuits / voltage doublers: Suitable for rectifier and voltage doubler topologies that require high‑voltage bulk capacitance.

Unique Advantages

• High voltage capability: 450 V rating enables use in higher‑voltage DC link and rectifier applications without series stacking.
• High ripple handling: Specified ripple currents of 7.9 A (120 Hz) and 11.06 A (10 kHz) support both low‑ and high‑frequency power processing tasks.
• Low ESR at high frequency: 1.6 mΩ ESR at 100 kHz reduces dissipation and supports stable operation under rapid switching and regenerative events.
• Long endurance at operating temperature: 5000 hours at 85°C under rated conditions provides predictable life for continuous high‑stress applications.
• Robust charge/discharge endurance: Qualified for extended charge/discharge cycling per datasheet, supporting applications with frequent regenerative events.
• Secure screw‑terminal connectivity: Screw terminals facilitate reliable mounting and repeatable electrical connections in serviceable power assemblies.

Why Choose LQR2W182MSEGBN?

LQR2W182MSEGBN combines high DC voltage capability with large capacitance and low high‑frequency ESR to meet the demands of regenerative drives, inverters, and rectifier circuits. Its screw‑terminal construction and defined ripple and endurance specifications make it a practical choice for engineers specifying reliable bulk energy storage in power electronics subsystems.

This part is targeted at designers and procurement teams building AC servo systems, industrial inverters, and equipment exposed to fluctuating supply conditions who need predictable ripple performance, charge/discharge durability, and RoHS compliance from a proven electrolytic capacitor series.

Request a quote or submit an inquiry to evaluate LQR2W182MSEGBN for your next power electronics design; our team can provide pricing, availability, and additional technical support information.