LAK2D821MELB45

The LAK2D821MELB45 is a snap‑in terminal type aluminum electrolytic capacitor designed for general‑purpose power filtering in equipment exposed to fluctuating voltages. It is a member of Nichicon’s LAK series and is specified for 200 V operation with 820 µF capacitance.

Engineered for high‑temperature endurance and enhanced safety, this capacitor is rated to operate from −25°C to 105°C and is designed to withstand 2000 hours of rated ripple current at 105°C, making it suitable for demanding thermal and voltage environments.

Key Features

• Snap‑in terminal package — Radial can with snap‑in mounting for secure chassis or PCB assembly and straightforward installation.
• Rated capacitance and tolerance — 820 µF with ±20% tolerance (at 120 Hz, 20°C), providing predictable bulk energy storage for power circuits.
• 200 V rated voltage — Designed for 200 V systems; the LAK series also offers extended voltage options (200 V, 400 V, 420 V).
• High temperature endurance — Specified to operate between −25°C and 105°C with an endurance test of 2000 hours at 105°C under D.C. bias plus rated ripple current.
• Ripple current capability — Rated ripple current of 1.99 A at 120 Hz and 2.388 A at 10 kHz, supporting suppression of AC components and smoothing under load.
• Leakage current specification — Leakage current conforms to I ≤ 3√(C·V) µA after 5 minutes’ application of rated voltage at 20°C as defined in the series datasheet.
• Improved safety features — Designed with pressure relief venting and enhanced safety measures for abnormally excessive voltage as described for the LAK series.
• RoHS compliant — Compliant with RoHS directives listed in the product information.
• Size and form factor — Can dimensions L: 4.5 cm × D: 3.0 cm with snap‑in radial package; suitable for compact power assemblies.

Typical Applications

• General‑purpose power filtering — Bulk smoothing and ripple reduction in equipment where stable DC is required and voltage conditions may vary.
• Equipment exposed to voltage fluctuations — Designed specifically for systems operating in environments with fluctuating input voltages thanks to enhanced abnormal‑voltage safety features.
• Chassis or PCB power assemblies — Snap‑in mounting enables robust mechanical retention for power modules and chassis‑mounted capacitor banks.

Unique Advantages

• High thermal endurance: Endurance rating of 2000 hours at 105°C under rated ripple conditions provides measurable reliability for high‑temperature applications.
• Clear ripple performance data: Published ripple current values at 120 Hz and 10 kHz allow designers to size capacitors against actual ripple loads.
• Series‑level voltage flexibility: The LAK series supports extended voltage options (200 V, 400 V, 420 V), enabling commonality across designs; this specific part is rated 200 V.
• Safety‑focused design: Pressure relief venting and abnormal voltage countermeasures improve risk management for fluctuating voltage environments.
• Regulatory compliance: RoHS compliance supports use in regions requiring restricted substance conformity.
• Compact snap‑in form factor: Radial can with snap‑in terminals simplifies assembly in constrained layouts while providing secure mechanical retention.

Why Choose LAK2D821MELB45?

LAK2D821MELB45 combines a substantial 820 µF capacitance and 200 V rating with snap‑in convenience and series‑level safety features to address filtering and energy‑storage needs in equipment subject to voltage variability and elevated temperatures. Its endurance specification of 2000 hours at 105°C under rated ripple current offers designers a verifiable basis for reliability planning.

This part is well suited to designers and procurement teams seeking a RoHS‑compliant, high‑temperature aluminum electrolytic capacitor with documented ripple and leakage characteristics, compact radial can packaging, and safety provisions for abnormal voltage conditions.

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