LQR2G821MSEC

The LQR2G821MSEC from Nichicon is an aluminum electrolytic capacitor in a screw-terminal radial can designed for high-voltage, high-speed charge–discharge applications. It delivers 820 µF at 400 V with a polarized screw‑terminal package optimized for robust electrical connections.

Built for systems that require stable energy storage under fluctuating voltages, the LQR2G821MSEC is suitable for regenerative circuits, inverters and rectifier stages where sustained ripple handling and endurance are required.

Key Features

• Core Electricals — 820 µF capacitance at 400 V rated voltage with ±20% tolerance (measured at 120 Hz, 20°C); polarized construction for DC energy storage.
• Endurance & Lifecycle — Rated endurance of 5000 hours at 85°C with DC bias plus rated ripple current applied; meets charge–discharge endurance tests described for the LQR series.
• High-speed Charge–Discharge — Designed for 85°C high-speed charge–discharge operation as specified for the LQR series, suitable for regenerative and inverter applications.
• Ripple Current Performance — Ripple handling specified as 4.1 A at 120 Hz and 5.74 A at 10 kHz, supporting both low- and high-frequency ripple conditions.
• Leakage and Dissipation — Specified leakage current of 1.71 mA and tangent of loss angle (tanδ) of 0.15 (measurement basis at 120 Hz, 20°C).
• Temperature & Stability — Operating range −25°C to +85°C with impedance stability to low temperature (Z(−25°C)/Z(+20°C) up to 8 for the series).
• Mechanical & Packaging — Screw terminal radial can, physical size approximately φ35 × 100 mm (L: 10 × D: 3.5 cm); supplied in cardboard packing and available in mass production.
• Regulatory — RoHS compliant.

Typical Applications

• AC servomotor regenerative circuits — Supports high-frequency regenerative voltage handling and rapid charge–discharge cycles in servo drive energy recapture.
• General inverters — Provides DC link storage and ripple damping for inverter power stages subject to fluctuating supply or load conditions.
• Voltage doubler/rectifier circuits — Suited for rectifier circuits including voltage‑doubler topologies where high-voltage DC smoothing is required.
• Equipment operating in fluctuating-voltage environments — Stabilizes DC rails and absorbs transient energy where supply voltage can vary.

Unique Advantages

• 400 V rated voltage: Enables use in high-voltage DC link and power conversion stages without additional series stacking.
• Long endurance at elevated temperature: 5000 hours at 85°C specification supports lifetime planning for industrial power electronics.
• Screw-terminal construction: Provides secure, low-impedance connections for high-current or high-vibration environments.
• Measured ripple capability: Specified ripple currents at both 120 Hz and 10 kHz allow designers to evaluate performance across low and high frequency ripple conditions.
• Low-temperature stability: Rated to −25°C with defined impedance ratio characteristics, enabling predictable behavior across the stated temperature range.
• RoHS compliance and production availability: Meets RoHS requirements and is available in mass production with cardboard packing for standard handling.

Why Choose LQR2G821MSEC?

The LQR2G821MSEC combines high-voltage capability (400 V) with substantial capacitance (820 µF) and engineered screw-terminal construction to meet the demands of industrial power electronics. Its specified ripple current ratings, leakage and tanδ values, and 5000-hour endurance at 85°C allow engineers to design predictable DC-link and energy-storage stages for regenerative drives, inverters and rectifier circuits.

This part is well suited for designers and procurement teams building systems that require robust electrical connections, defined lifetime behavior under elevated temperature, and compliance with RoHS. The Nichicon LQR series specification set supports validation against application-level endurance and charge–discharge requirements.

To request a quote or submit a product inquiry for LQR2G821MSEC, please contact sales with your quantity and delivery requirements. Our team can provide availability, lead‑time and supporting technical documentation.