LGNW6121MELA25

The LGNW6121MELA25 is a snap-in terminal, large-can aluminum electrolytic capacitor from Nichicon's LGN series. It delivers 120 µF at a 420 V rating in a compact radial can snap-in package designed for general-purpose applications.

Designed for demanding thermal environments, this part withstands 3000 hours of rated ripple current at 105°C and is RoHS compliant, offering a balance of high-voltage capability, compact packaging and proven endurance.

Key Features

• Capacitance & Voltage — 120 µF nominal capacitance with a 420 V rated voltage and a tolerance of ±20% (120 Hz, 20°C).
• High-Temperature Endurance — Specified to withstand 3000 hours of application of rated ripple current at 105°C, with defined limits for capacitance change, tan δ and leakage after endurance testing.
• Snap-In Radial Can Package — Snap-in terminal type in a radial, can-style package; physical size L: 2.5 × D: 2.5 cm and maximum seated height 2.5 cm. The LGN series offers a one-rank smaller case size compared to the LGU series.
• Ripple Current Capability — Rated ripple current of 810 mA at 120 Hz and 1.158 A at 100 kHz, supporting AC ripple and smoothing duties at both low and high frequencies.
• Operating Temperature Range — –25°C to +105°C, allowing operation in elevated-temperature environments.
• Electrical Loss — Tangent of loss angle (tan δ) specified up to a maximum of 0.15 for rated voltages in the 160–420 V range (measured at 120 Hz, 20°C).
• Polarized Design — Polarized electrolytic capacitor for DC bulk storage and smoothing applications.
• Environmental Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General-purpose power supplies — Bulk energy storage and smoothing in high-voltage DC power circuits where 420 V rating and defined ripple capability are required.
• Industrial power equipment — Energy storage and filtering roles in equipment that operates at elevated temperatures, benefitting from 3000-hour endurance at 105°C.
• High-voltage smoothing and buffering — Use in circuits that require compact, snap-in, high-voltage capacitors for DC link or reservoir functions.

Unique Advantages

• Proven endurance at elevated temperature — The 3000-hour rated ripple-current endurance at 105°C provides quantifiable reliability for high-temperature service life planning.
• Compact high-voltage form factor — 120 µF at 420 V in a 2.5 × 2.5 cm can and a one-rank smaller case than the LGU series helps reduce board area in high-voltage designs.
• Dual-frequency ripple capability — Specified ripple current at both 120 Hz and 100 kHz supports smoothing across a range of switching and line frequencies.
• Clear electrical characterization — Specified tan δ, leakage current behavior and tolerance give designers measurable parameters for design and margin calculations.
• RoHS compliant — Meets RoHS directive requirements for restricted substances.

Why Choose LGNW6121MELA25?

LGNW6121MELA25 positions itself as a compact, high-voltage snap-in aluminum electrolytic capacitor that combines measurable thermal endurance with clear ripple-current and loss specifications. Its electrical and mechanical data make it suitable for designers seeking a polarized bulk storage solution in general-purpose high-voltage applications where elevated operating temperature and long endurance are required.

This part is appropriate for engineering teams and procurement focused on reliable, RoHS-compliant capacitors from a known manufacturer, offering predictable behavior under defined ripple and temperature conditions.

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