LQR2V821MSECBN

The LQR2V821MSECBN is a screw‑terminal aluminum electrolytic capacitor from Nichicon’s LQR series, designed for high‑voltage DC link and power electronics applications. It provides 820 µF capacitance at a 350 V rating in a radial can with screw terminals, delivering energy storage and filtering for inverters, regenerative drives and other equipment exposed to fluctuating voltages.

Key performance attributes include high ripple handling, low leakage, and a rated endurance of 5000 hours at 85°C. The part is RoHS‑compliant and tailored for robust charge–discharge behavior in demanding power environments.

Key Features

• Capacitance & Voltage — 820 µF nominal capacitance at a 350 V rated voltage, with ±20% tolerance (measured at 120 Hz, 20°C).
• High ripple capability — Rated ripple current of 3.3 A at 120 Hz and 4.62 A at 10 kHz to support DC link filtering and high‑frequency regenerative currents.
• Low leakage — Specified leakage current of 1.60 mA (measured conditions per product data), reducing standby losses in power systems.
• Endurance and charge‑discharge resilience — Rated for 5000 hours at 85°C under D.C. bias plus rated ripple; series specification includes endurance for repeated charge–discharge cycles (20 million cycles at ΔV = 0.3 × rated voltage, 3 Hz, room temperature).
• Temperature stability — Operating range from −25°C to +85°C with an impedance ratio Z(−25°C)/Z(+20°C) of up to 8, providing defined low‑temperature performance.
• Rugged screw‑terminal package — Radial can with screw terminals for secure electrical and mechanical connections in power assemblies; physical size φ35 × 80 mm (approx. L: 8 × D: 3.5 cm).
• Regulatory compliance — RoHS‑compliant per supplied product information.

Typical Applications

• AC servo and motor drives — Energy buffering and regenerative voltage handling in servo amplifiers and drive systems where rapid charge–discharge is required.
• Inverter DC links — DC link smoothing and ripple reduction for general inverter topologies subjected to fluctuating supply voltages.
• Rectifier and voltage‑doubler circuits — Bulk energy storage and filtering in rectifier stages including voltage doubler configurations.
• Industrial power equipment — Use in power electronics and industrial equipment operating over a −25°C to +85°C range with sustained ripple and repeated cycling.

Unique Advantages

• High‑voltage energy storage: 350 V rating with 820 µF capacitance provides substantial DC link energy for power conversion systems.
• Designed for high ripple environments: Specified ripple currents at both low and high frequencies (3.3 A at 120 Hz, 4.62 A at 10 kHz) to handle regenerative and switching stresses.
• Proven endurance: 5000 hours at 85°C under rated conditions and documented charge–discharge endurance for millions of cycles support long service life in cyclical applications.
• Secure screw‑terminal mounting: Screw terminals enable robust electrical connections and straightforward installation in power assemblies.
• Low standby loss: Measured leakage current (1.60 mA) helps minimize idle power dissipation in systems where leakage is a concern.
• RoHS compliance: Meets RoHS requirements as indicated in the product information.

Why Choose LQR2V821MSECBN?

The LQR2V821MSECBN positions itself as a durable, high‑voltage electrolytic solution for demanding power electronics tasks. Its combination of 820 µF capacitance at 350 V, strong ripple capability across frequencies, and defined endurance and temperature characteristics make it well suited to DC link, regenerative, and rectifier applications where reliability under thermal and electrical stress is required.

This part is appropriate for engineers specifying capacitors for industrial inverters, servo drives and other equipment operating in fluctuating voltage environments who need a clearly specified, screw‑terminal aluminum electrolytic with documented endurance and RoHS compliance.

Request a quote or contact sales to discuss availability, lead times, and pricing for LQR2V821MSECBN.