LLS2V391MELB

The LLS2V391MELB is a Nichicon LLS series snap-in aluminum electrolytic capacitor rated at 390 µF and 350 V. It is designed for general-purpose high-voltage power applications that require robust ripple handling and long endurance at elevated temperatures.

With a snap-in radial can package and tray packing for production handling, this part targets power supply, inverter, and industrial electronics designs that need reliable DC-link smoothing and bulk energy storage up to 350 V.

Key Features

• Capacitance & Voltage: 390 µF nominal capacitance with a 350 V rated voltage and ±20% tolerance at 120 Hz, 20°C.
• High ripple current capability: 2.23 A low-frequency ripple current at 120 Hz and 3.189 A high-frequency ripple current at 50 kHz, enabling effective smoothing under continuous AC ripple stress.
• Endurance and reliability: Designed to withstand 3000 hours of rated ripple current at 85°C per the LLS series endurance specification.
• Loss characteristics: tan δ of 0.15 (max) measured at 120 Hz and 20°C, supporting predictable dissipation behavior in AC/DC applications.
• Leakage current: Leakage current specified at 1100 µA, supporting predictable bias behavior after voltage application.
• Package & mounting: Snap-in terminal, radial can (φ30 × 35L / L: 3.5 cm × D: 3 cm) suitable for secure board anchoring in high-current applications; supplied in trays for mass production.
• Operating environment: Rated for operation from −25°C to +85°C and RoHS compliant.

Typical Applications

• Power supplies and DC‑link filtering: Bulk smoothing and energy buffering for high-voltage supplies up to 350 V, leveraging the part’s high ripple current ratings.
• Inverters and motor drives: DC-link and intermediate circuit support for industrial drives and power conversion equipment requiring long endurance at elevated temperature.
• Industry power electronics: High-voltage filter stages and energy storage in UPS, welding, and industrial control systems where continuous ripple endurance is required.

Unique Advantages

• High-voltage capability: 350 V rating allows use in DC-link and high-voltage smoothing applications without series stacking.
• Proven endurance: 3000-hour rated life at 85°C under rated ripple current provides predictable long-term performance under thermal and electrical stress.
• Strong ripple-handling: Distinct low- and high-frequency ripple current specifications (2.23 A @120 Hz, 3.189 A @50 kHz) help designers size capacitors for both mains and switching-frequency stresses.
• Stable dissipation: Low tan δ (0.15 at 120 Hz, 20°C) supports controlled heating and reliable operation in continuous-use environments.
• Production-ready packaging: Tray packing and snap-in terminals simplify assembly and handling for volume manufacturing.
• Regulatory compliance: RoHS compliant for use in designs requiring restricted-substance compliance.

Why Choose LLS2V391MELB?

The LLS2V391MELB combines a high 350 V rating with substantial capacitance and robust ripple-current capability to address demanding power-electronics roles such as DC-link smoothing and bulk energy storage. Its 3000-hour endurance at 85°C and controlled dissipation characteristics make it suitable for designs that require predictable behavior under continuous electrical and thermal load.

This part is well suited to engineers and procurement teams building industrial power supplies, inverters, and other high-voltage systems who need a production-ready snap-in capacitor with clear, verifiable performance specifications and RoHS compliance.

Request a quote or contact our sales team to discuss availability, lead times, and volume pricing for LLS2V391MELB.