LGL2G391MELB30

The LGL2G391MELB30 from Nichicon is a snap‑in terminal aluminum electrolytic capacitor in the LGL series, offering 390 µF capacitance at a 400 V rated voltage. Engineered for general‑purpose applications, it delivers high ripple handling and long‑duration endurance in a compact radial, can snap‑in package (φ30 × 30 mm).

Key value comes from its combination of high voltage rating, elevated operating temperature (–25 °C to 105 °C), and endurance specification, making it suitable for designs that require robust DC bias performance and sustained ripple current capability.

Key Features

• High Voltage Rating — 400 V rated voltage suitable for high‑voltage DC circuits requiring substantial capacitance.
• Nominal Capacitance — 390 µF with ±20% tolerance at 120 Hz, 20 °C, providing predictable energy storage for smoothing and decoupling.
• Snap‑In Radial Can Package — φ30 × 30 mm radial, snap‑in terminal construction for secure mounting and straightforward installation on power PCBs.
• Ripple Current Capability — Rated ripple current of 1.23 A at 120 Hz (and 1.759 A at 50 kHz), enabling effective handling of AC ripple under DC bias conditions.
• Low Leakage Current — Specified leakage current of 1.18 mA for this size at rated voltage after standard conditioning.
• Wide Operating Temperature — Rated for –25 °C to 105 °C with an endurance life of 2000 hours at 105 °C under D.C. bias plus rated ripple current.
• Loss Angle — tan δ up to 0.15 at 120 Hz for the 400 V rating, supporting predictable dissipation characteristics.

Typical Applications

• General‑purpose power circuitry — Used where 400 V capacitance and sustained ripple handling are required for smoothing and energy storage in DC systems.
• DC‑link and filter stages — Suited to circuits that subject capacitors to DC bias plus rated ripple current, supported by the 2000 h endurance at 105 °C.
• Industrial and electronic equipment — Provides reliable capacitance and thermal endurance for standard industrial power electronics and related designs.

Unique Advantages

• High‑voltage capability: 400 V rating allows use in elevated DC environments without up‑rating component stack.
• Compact snap‑in form factor: φ30 × 30 mm radial can with snap‑in terminals simplifies board mounting while conserving PCB area.
• Proven ripple handling: 1.23 A at 120 Hz (and 1.759 A at 50 kHz) gives designers quantifiable ripple performance for thermal and lifetime planning.
• Endurance at elevated temperature: 2000 hours at 105 °C under rated conditions ensures stable capacitance, dissipation factor, and leakage over long operational periods.
• Controlled leakage and dissipation: Leakage current of 1.18 mA and tan δ specified for reliable power loss estimation and system design.
• Manufacturer support: Part of Nichicon’s LGL series, providing consistent series specifications and documentation for design validation.

Why Choose LGL2G391MELB30?

The LGL2G391MELB30 provides a targeted balance of high voltage, substantial capacitance, and measurable ripple capability in a compact snap‑in package. Its 105 °C endurance rating and documented performance under DC bias plus ripple current make it a practical choice for engineers designing robust power and filtering stages in general‑purpose electronic and industrial equipment.

This part is well suited to designs that need transparent, verifiable electrical characteristics (capacitance, leakage, tan δ, ripple current) and predictable lifetime behavior backed by Nichicon’s LGL series specifications.

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