LGJ2G390MELZ15

The LGJ2G390MELZ15 from Nichicon is a snap-in terminal aluminum electrolytic capacitor in the LGJ series, optimized for general-purpose power applications that require a compact, high-voltage bulk capacitor. Its 39 µF capacitance at a 400 V rating, polarized design and snap-in radial can package deliver a compact solution for energy storage, smoothing and filtering in high-voltage circuits.

Designed for production volumes, this part is supplied in tray packing and built to a 2000-hour endurance at 105°C, providing measured electrical characteristics for reliable integration into industrial and power-electronics designs.

Key Features

• High-voltage capability — Rated for 400 V, suitable for high-voltage DC link and power-supply applications requiring compact bulk capacitance.
• Capacitance and tolerance — 39 µF with ±20% tolerance at 120 Hz and 20°C for predictable filtering and energy storage performance.
• Snap-in radial package — Snap-in terminal, radial can (φ22 × 15 mm) for secure PCB mounting and compact system integration.
• Frequency and loss characteristics — Specified tangent of loss angle (tan δ) of 0.20 at 20°C and 120 Hz, enabling designers to account for dissipation in AC ripple environments.
• Ripple current performance — Rated ripple currents of 300 mA at 120 Hz (low frequency) and 429 mA at 50 kHz (high frequency) to support both mains-related and higher-frequency switching ripple.
• Leakage current — 370 µA leakage current value for sizing bleeder networks and predicting standby drain.
• Thermal endurance — 2000 hours life rated at 105°C and operating temperature range of −25°C to +105°C to address elevated-temperature environments.
• Manufacturing and supply — Tray packing and mass-production availability for streamlined assembly and supply-chain handling.

Typical Applications

• Power supplies and DC–DC converters — Bulk smoothing and filtering where 400 V rating and 39 µF capacitance provide energy reserve and ripple attenuation in high-voltage rails.
• Industrial power electronics — Energy buffering and decoupling in industrial drives and control equipment that operate in elevated-temperature environments up to +105°C.
• High-voltage switching circuits — Support for switching ripple at both mains frequency and higher switching frequencies, leveraging the specified ripple current ratings at 120 Hz and 50 kHz.

Unique Advantages

• Compact high-voltage solution: 39 µF at 400 V in a φ22 × 15 mm can delivers significant capacitance in a low-profile footprint for space-constrained designs.
• Clear thermal specification: Rated for operation from −25°C to +105°C with a 2000-hour endurance at the upper temperature to help predict long-term behavior in hotter environments.
• Dual-frequency ripple handling: Defined ripple current ratings at both 120 Hz and 50 kHz let designers size capacitors for mains-related and high-frequency switching ripple without guesswork.
• Manufacturing-ready packaging: Tray packing and mass-production status support high-volume assembly and consistent supply handling.
• Measurable leakage and dissipation parameters: Specified leakage current (370 µA) and tan δ (0.20 at 20°C, 120 Hz) simplify system-level loss and standby-power calculations.
• Secure snap-in mounting: Snap-in terminals provide reliable mechanical retention for board-level applications subject to vibration or handling.

Why Choose LGJ2G390MELZ15?

LGJ2G390MELZ15 positions itself as a practical, production-ready choice for engineers who need a compact, high-voltage aluminum electrolytic capacitor with defined ripple, leakage and dissipation characteristics. Its combination of a 400 V rating, 39 µF capacitance, and snap-in radial package makes it a straightforward option for power-supply bulk storage, filtering and decoupling in industrial and high-voltage switching applications.

Designed and manufactured by Nichicon as part of the LGJ series, this capacitor offers predictable thermal endurance and supply-friendly packaging for teams focused on scalable production and reliable field performance.

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