LGN2D821MELZ45

The LGN2D821MELZ45 is a snap-in terminal aluminum electrolytic capacitor from Nichicon’s LGN series, specified for 820 µF at 200 V. It is a smaller-sized snap-in can designed for general-purpose power applications that require extended high-temperature endurance and measurable ripple-current capability.

Built for continuous operation up to 105°C, this polarized radial can provides a compact solution where high ripple tolerance and long end-of-life stability are important design considerations.

Key Features

• Capacitance & Voltage — 820 µF nominal capacitance at a 200 V rated voltage with ±20% tolerance, suitable for bulk energy storage and filtering in medium-voltage circuits.
• High-Temperature Endurance — Rated for operation to 105°C and specified to withstand 3000 hours of rated ripple current at 105°C, delivering long-term stability under thermal stress.
• Ripple Current Performance — Specified ripple current of 2.04 A at 120 Hz and 3.06 A at 100 kHz, enabling effective smoothing under both mains-frequency and higher-frequency ripple conditions.
• Compact Snap-In Package — Radial, can-style snap-in mounting for robust mechanical retention and easy installation in power assemblies; one rank smaller case size than the LGU series for space-constrained designs.
• Operating Temperature Range — Category temperature range includes −40°C to +105°C for rated voltages in the 160–250 V band (applies to this 200 V part), supporting wide ambient conditions.
• RoHS Compliant — Conforms to RoHS directive (2011/65/EU, (EU)2015/863), supporting regulatory compliance for lead-free designs.
• Series Range — Part of the LGN family, which covers rated voltages from 160 V to 600 V and capacitances from 56 µF to 3300 µF, allowing designers to scale across the series.

Typical Applications

• General-Purpose Power Supplies — Bulk filtering and smoothing where 200 V handling and sustained ripple endurance at elevated temperatures are required.
• Industrial Power Electronics — Energy storage and decoupling in assemblies that demand long high-temperature endurance and robust snap-in mounting.
• Medium-Voltage DC Bus Support — Stabilizing DC rails in equipment within the LGN series’ rated voltage band, benefiting from the series’ wide capacitance options.

Unique Advantages

• Extended High-Temperature Life: 3000-hour rated ripple-current endurance at 105°C provides predictable ageing and performance retention under thermal load.
• Measurable Ripple Capability: Specified ripple currents at both 120 Hz and 100 kHz give designers clear parameters for selecting the part to match system ripple spectra.
• Space-Efficient Snap-In Design: One-rank smaller case than LGU-series parts helps reduce board and enclosure space without sacrificing power-handling capability.
• Broad Series Coverage: The LGN series’ wide voltage and capacitance range supports design scalability and part-family consistency across product variants.
• Regulatory Compliance: RoHS conformity helps streamline end-product compliance in lead-free programs.

Why Choose LGN2D821MELZ45?

LGN2D821MELZ45 positions itself as a compact, high-temperature-capable snap-in electrolytic solution for general-purpose power designs that require 820 µF at 200 V. Its specified ripple-current performance at both mains and higher frequencies, combined with 3000-hour endurance at 105°C, makes it suitable for applications where thermal stress and sustained ripple are primary concerns.

As part of the LGN family, this part offers a straightforward path to scale capacitance or voltage across the same series footprint, aiding design continuity and supply planning while maintaining RoHS compliance for regulatory alignment.

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