LGN2W181MELZ45

The LGN2W181MELZ45 is an aluminum electrolytic, snap‑in terminal capacitor designed for general‑purpose applications. It delivers a 450 V rating with 180 µF capacitance in a compact snap‑in can, offering long‑term endurance under elevated temperature and ripple conditions.

Built to withstand 3000 hours of rated ripple current at 105°C, this part is suited to designs that require high‑voltage capacitance, robust thermal endurance, and a smaller case footprint relative to the LGU series. It is RoHS compliant.

Key Features

• Capacitance & Voltage — 180 µF nominal capacitance at a 450 V rated voltage for high‑voltage energy storage and filtering in general‑purpose circuits.
• High‑Temperature Endurance — Rated for operation up to 105°C and specified to withstand 3000 hours application of rated ripple current at 105°C.
• Ripple Current Capability — Specified ripple current of 870 mA at 120 Hz and 1.244 A at 100 kHz, enabling reliable performance under AC ripple stress.
• Compact Snap‑In Package — Snap‑in radial can (package/case: Radial, Can - Snap‑In) with a smaller case size than the LGU series, simplifying chassis mounting and assembly.
• Operating Range & Tolerance — Polarized capacitor with operating temperature range of −25°C to +105°C and capacitance tolerance of ±20%.
• Physical Dimensions — Body dimensions L: 4.5 × D: 2.2 cm and maximum seated height of 1.772 inches, providing a compact footprint for high‑voltage modules.
• RoHS Compliant — Meets RoHS directive (2011/65/EU,(EU)2015/863) requirements for restricted substances.

Typical Applications

• General‑purpose high‑voltage circuits — Suited for applications that require a 450 V, 180 µF polarized capacitor with high ripple endurance and extended lifetime at elevated temperatures.
• Power supply filtering — Provides bulk capacitance and ripple handling where long endurance at 105°C is required.
• Compact snap‑in mount designs — Designed for installations that benefit from a snap‑in radial can and a smaller case size compared with LGU series parts.

Unique Advantages

• Long high‑temperature life: Specified to sustain rated ripple current for 3000 hours at 105°C, supporting designs that demand extended thermal endurance.
• High ripple capability: Explicit ripple ratings (870 mA at 120 Hz; 1.244 A at 100 kHz) help designers size parts for real AC stress conditions.
• High voltage support: 450 V rating provides reliable performance in high‑voltage circuits without overrating multiple lower‑voltage parts.
• Smaller case than LGU: One rank smaller case sizing compared with the LGU series enables space savings on the power stage or chassis.
• Snap‑in mounting: Radial snap‑in can simplifies mechanical retention and assembly in panel or chassis applications.
• Regulatory compliance: RoHS compliance reduces material and compliance risk for regulated assemblies.

Why Choose LGN2W181MELZ45?

The LGN2W181MELZ45 combines a 450 V rating and 180 µF capacitance with proven endurance at elevated temperature and ripple conditions, making it a practical choice for general‑purpose high‑voltage applications that need reliable long‑term performance. Its compact snap‑in can and one‑rank smaller case size versus the LGU series help conserve space while maintaining robust electrical characteristics.

This part is suited to engineers and procurement teams looking for a RoHS‑compliant, high‑voltage aluminum electrolytic capacitor with specified ripple capability and a documented 3000‑hour endurance at 105°C. It provides a clear, specification‑based option for designs that prioritize longevity, thermal resilience, and compact mechanical integration.

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