LGN2W181MELA35

The LGN2W181MELA35 is a snap‑in terminal aluminum electrolytic capacitor designed for general‑purpose applications that require a compact, high‑voltage bulk capacitor. It provides 180 µF capacitance at a 450 V rating, polarized construction, and a smaller case size compared with the LGU series while supporting continuous operation up to 105°C.

Engineered for durability, this part withstands extended ripple current stress and is RoHS compliant, making it suitable for designs that demand sustained performance in elevated temperature environments.

Key Features

• Electrical Rating: 180 µF capacitance at 450 V with polarization and a tolerance of ±20%.
• High‑temperature Endurance: Rated to operate from −25°C to +105°C with an endurance rating of 3000 hours at 105°C under DC bias plus rated ripple current.
• Ripple Current Performance: Rated ripple current of 870 mA at 120 Hz and 1.244 A at 100 kHz, supporting sustained ripple stress.
• Reliability Requirements: Endurance criteria per datasheet: capacitance change within ±20%, tan δ up to 200% of initial specified value, and leakage current less than or equal to the initial specified value after endurance testing.
• Electrical Loss and Leakage: Specified tan δ max of 0.20 for 450 V (measured at 120 Hz, 20°C); leakage current meets the datasheet specification after application of rated voltage at 20°C.
• Low‑temperature Stability: Impedance ratio Z(−25°C)/Z(+20°C) up to 8 for the 350–600 V range, supporting performance at lower ambient temperatures.
• Package and Mounting: Snap‑in terminal, radial can package with dimensions L: 3.5 × D: 2.5 cm and a seated height maximum of 1.378 inch for compact board implementation.
• Environmental Compliance: Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General‑purpose power filtering — Bulk smoothing and decoupling in circuits where a 450 V, 180 µF polarized capacitor is required, benefitting from the part’s rated ripple current and temperature endurance.
• High‑temperature power assemblies — Use in equipment that sees elevated ambient temperatures up to 105°C, taking advantage of the 3000‑hour ripple endurance at 105°C.
• Compact high‑voltage boards — Where a reduced case size (one rank smaller than LGU) and snap‑in mounting help optimize board layout and mechanical retention.

Unique Advantages

• Long ripple‑endurance life: Designed to withstand 3000 hours of rated ripple current at 105°C, which supports longer maintenance intervals and predictable life in hot environments.
• High voltage capability in a compact case: 450 V rating combined with a smaller case size than the LGU series enables high‑voltage designs with reduced board footprint.
• Clear ripple specifications: Published ripple current values at both 120 Hz and 100 kHz allow designers to assess performance across common operating frequencies.
• Snap‑in mounting: Provides robust mechanical retention for vertical board mounting while simplifying assembly in radial can form factor.
• Datasheet‑defined reliability limits: Endurance and shelf‑life criteria (capacitance, tan δ, leakage) are specified, enabling predictable qualification and lifecycle planning.
• RoHS compliant: Meets current RoHS requirements for restricted substances.

Why Choose LGN2W181MELA35?

LGN2W181MELA35 is positioned for designers who need a reliable 450 V, 180 µF electrolytic capacitor that combines compact sizing with proven high‑temperature ripple endurance. Its snap‑in package and defined electrical characteristics make it appropriate for general‑purpose power applications where long service life and predictable performance at up to 105°C are required.

Choose this part when your design demands a balance of high voltage capacity, sustained ripple handling, reduced case size relative to the LGU family, and RoHS compliance—backed by datasheet‑specified endurance and stability metrics for lifecycle planning.

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