LLG2W391MELA50

The LLG2W391MELA50 is an aluminum electrolytic capacitor in Nichicon’s LLG series, featuring a snap-in terminal radial can construction. Designed for general-purpose power applications, it provides high-voltage bulk capacitance in a one-rank smaller case than the LLS series to support equipment downsizing.

Key attributes include a 390 µF capacitance at 450 V rating, RoHS compliance, and endurance data characterized for operation up to 85 °C, making it suitable where compact, high-voltage electrolytic capacitance is required.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with a 450 V rated voltage and ±20% tolerance.
• Package & Mounting — Snap-in terminal, radial can package for secure board mounting and high-current connection.
• Compact Form Factor — One rank smaller case size than LLS, enabling equipment downsizing without reducing capacitance.
• Operating Range — Rated for operation from −25 °C to +85 °C (category range for 400–450 V applications).
• Endurance — Specified lifetime of 2000 hours at 85 °C with D.C. bias plus rated ripple current, meeting defined limits for capacitance change, tan δ, and leakage current after test.
• Ripple Current Performance — Rated ripple handling of 2.1 A at 120 Hz and 3.003 A at 100 kHz, supporting AC ripple and high-frequency stress within specified limits.
• Electrical Characteristics — Leakage current specified as I ≤ 3√CV (μA) after 5 minutes at 20 °C; tan δ max 0.20 at 450 V (measured at 120 Hz, 20 °C).
• Low-Temperature Stability — For 400–450 V ratings, impedance ratio Z(−25 °C)/Z(+20 °C) up to 8 at 120 Hz, useful when cold-start impedance is a consideration.
• Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).
• Physical Size — Body dimensions: L: 5 × D: 2.5 cm (radial can, snap-in termination).

Typical Applications

• Industrial power systems — General-purpose high-voltage bulk capacitance for power electronics where robust electrolytic storage is required.
• Power supplies — Snap-in mounting and high-voltage rating make it suitable for filter and reservoir applications in high-voltage supplies.
• Equipment downsizing projects — One-rank smaller case size than LLS helps reduce enclosure and board space while retaining capacitance.

Unique Advantages

• High-voltage bulk capacitance: 390 µF at 450 V provides substantial energy storage for high-voltage designs.
• Compact, space-saving package: Smaller case size than LLS supports tighter mechanical integration and equipment miniaturization.
• Measured ripple capability: Specified ripple current values at 120 Hz and 100 kHz enable designers to size capacitors for both line-frequency and higher-frequency ripple conditions.
• Durability at elevated temperature: 2000-hour endurance at 85 °C under rated conditions gives predictable life performance for thermal designs.
• Verified electrical limits: Leakage current defined by I ≤ 3√CV (μA) and tan δ limits for 450 V help ensure predictable behavior and easier design verification.
• RoHS compliance: Meets 2011/65/EU and (EU)2015/863 requirements for restricted substances.

Why Choose LLG2W391MELA50?

The LLG2W391MELA50 balances high-voltage capacitance with a compact snap-in package, delivering a practical solution for designers targeting equipment downsizing without sacrificing energy storage. Its specified ripple current ratings, endurance at 85 °C, and defined electrical limits (leakage and tan δ) provide measurable parameters for robust power-electronics designs.

Produced as part of Nichicon’s LLG series and compliant with RoHS directives, this capacitor is aimed at engineers and procurement teams seeking a reliable, compact aluminum electrolytic for general-purpose high-voltage applications.

Request a quote or submit an inquiry to obtain pricing, availability, or technical support for the LLG2W391MELA50. Our team can provide the datasheet and assist with application-specific questions.