LGN2W151MELZ40

The LGN2W151MELZ40 is a 150 µF, 450 V aluminum electrolytic capacitor in a snap‑in radial can designed for general‑purpose power applications. It belongs to Nichicon’s LGN series of snap‑in terminal capacitors optimized for high operating temperature and long endurance.

This part delivers high‑voltage energy storage with specified ripple capability and has been engineered for sustained operation at elevated temperatures, making it suitable for demanding power electronics designs where reliable DC bias and ripple handling are required.

Key Features

• Capacitance & Voltage — 150 µF nominal capacitance with a 450 V rated voltage provides high‑voltage bulk energy storage for DC link and smoothing applications.
• High‑temperature endurance — Rated for operation up to 105°C with documented endurance: withstands 3000 hours with DC bias plus rated ripple current at 105°C.
• Ripple current performance — Specified ripple current of 790 mA at 120 Hz and 1.13 A at 100 kHz for reliable ripple handling across low and high frequencies.
• Snap‑in radial can package — Snap‑in terminal mounting simplifies PCB assembly for power modules and high‑current layouts while providing secure mechanical retention.
• Compact form factor — One rank smaller case size than the LGU series, providing a denser solution where board space is constrained (series characteristic).
• Operating temperature range — Specified for −25°C to +105°C for this voltage class, supporting operation in elevated ambient conditions.
• RoHS compliant — Compliant with RoHS directive (2011/65/EU, (EU)2015/863).
• Loss characteristics — tan δ (max.) 0.20 at 120 Hz, 20°C for rated voltages in the 450–600 V range (series specification).

Typical Applications

• High‑voltage power supplies — Bulk filtering and smoothing for 450 V rail designs where stable capacitance and ripple tolerance at elevated temperature are required.
• Industrial power electronics — Energy storage and DC link support in motor drives and industrial converters that require high voltage rating and long endurance.
• Power modules and assemblies — Snap‑in mounting facilitates integration into power assemblies and simplifies mechanical and electrical connection for high‑current circuits.

Unique Advantages

• Long endurance at elevated temperature — 3000‑hour rated life at 105°C under DC bias plus rated ripple current reduces maintenance and replacement frequency in high‑temperature installations.
• High ripple capability across frequencies — Explicit ripple current specifications at 120 Hz and 100 kHz allow predictable thermal and lifetime planning across typical power converter operating ranges.
• Space‑efficient packaging — The LGN series’ reduced case size (one rank smaller than LGU) helps conserve PCB real estate without sacrificing voltage capability.
• Snap‑in mounting for robust assembly — Snap‑in terminals provide strong mechanical retention for heavy copper and high‑vibration environments common in power systems.
• RoHS compliance — Conforms to applicable RoHS directives for regulated material content.

Why Choose LGN2W151MELZ40?

LGN2W151MELZ40 combines a high 450 V rating and 150 µF capacitance with documented ripple handling and 3000‑hour endurance at 105°C, making it a practical choice for designers requiring reliable high‑voltage bulk capacitance in compact snap‑in packaging. The part’s performance data—ripple current values at 120 Hz and 100 kHz, specified tan δ at rated voltage, and RoHS compliance—helps engineers size and qualify designs with confidence.

This capacitor is well suited to engineers and procurement teams building industrial power supplies, DC link stages, and other high‑voltage power electronics where endurance, predictable ripple performance, and a compact snap‑in form factor are priorities.

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