LGL2G391MELC25

The LGL2G391MELC25 is an aluminum electrolytic, snap‑in terminal capacitor from Nichicon’s LGL series designed for general‑purpose power applications. It combines a high working voltage (400 V) with substantial capacitance (390 µF) in an ultra‑smaller-sized snap‑in can (∅35 × 25 mm), supporting tray packing and mass production.

Engineered for elevated operating conditions, this part is rated to operate from −25°C to +105°C and is specified for 2000 hours of endurance at 105°C under DC bias plus rated ripple current.

Key Features

• High Voltage / High Capacitance — 390 µF at 400 V provides bulk capacitance for high‑voltage DC circuits where substantial energy storage is required.
• 105°C Endurance — Rated for operation up to 105°C with a specified endurance of 2000 hours at 105°C under DC bias plus rated ripple current.
• Compact Snap‑in Package — Radial, can-type snap‑in mounting in a φ35 × 25 mm package (L: 25 mm × D: 35 mm) for robust board retention and ease of assembly in power racks or chassis.
• Rated Ripple Performance — Specified ripple current of 1.18 A at 120 Hz (and 1.687 A at 50 kHz), with published frequency coefficients to scale ripple capability across frequencies.
• Typical Electrical Characteristics — Capacitance tolerance ±20% (at 120 Hz, 20°C); leakage current specified as I ≤ 3√(C·V) μA after 5 minutes at 20°C; tan δ maximum 0.15 at 400 V (120 Hz, 20°C).
• Stability & Recovery — Endurance and shelf‑life specifications require capacitance change within ±20%, tan δ ≤ 200% of initial spec, and leakage current not exceeding the initial specified value after defined stress and recovery procedures.

Typical Applications

• General‑purpose power circuits — Bulk energy storage and DC filtering in equipment where 400 V working voltage and substantial capacitance are required.
• High‑temperature environments — Systems that demand stable capacitor performance up to 105°C and validated endurance under elevated temperature and ripple stress.
• Chassis and rack power supplies — Snap‑in mounting for secure mechanical retention in high‑density power assemblies and production workflows.

Unique Advantages

• Ultra‑smaller footprint for 400 V class parts — Provides 390 µF capacitance in a compact ∅35 × 25 mm snap‑in can to save board and chassis space.
• Proven high‑temperature endurance — 2000 hours at 105°C under rated stress offers predictable life performance for elevated‑temperature installations.
• Measured ripple capability across frequencies — Published ripple current values and frequency coefficients allow designers to size capacitors for both low and high frequency ripple conditions.
• Clear electrical limits and recovery criteria — Leakage current formula (I ≤ 3√CV μA) and specified limits for tan δ and capacitance change provide verifiable acceptance criteria after stress or storage.
• Production‑friendly packaging — Tray packing and snap‑in termination support automated handling and robust mounting in mass production environments.
• Manufacturer lineage — Part of Nichicon’s LGL series, with documented dimensional and performance data for design integration.

Why Choose LGL2G391MELC25?

The LGL2G391MELC25 targets designs that require high working voltage, substantial capacitance, and reliable performance at elevated temperatures in a compact snap‑in package. Its combination of 390 µF at 400 V, 105°C temperature rating, defined ripple performance, and 2000‑hour endurance makes it a practical choice for production power assemblies and general‑purpose high‑voltage circuits.

Engineers and procurement teams looking for a mass‑production ready, mechanically secure snap‑in electrolytic capacitor with clear electrical and endurance specifications will find the LGL2G391MELC25 well documented for design and qualification activities.

To request a quote or discuss availability and lead times for LGL2G391MELC25, please submit an inquiry to receive pricing and ordering information.