LAK2G221MELC30

The LAK2G221MELC30 is an aluminum electrolytic capacitor in a snap‑in terminal (radial, can) package designed for general‑purpose power applications. It delivers 220 µF at a 400 V rating with polarized construction and a compact 35 mm × 30 mm can size.

Part of Nichicon’s LAK series, this capacitor is engineered for environments with variable supply conditions, offering extended voltage options and improved safety behavior for abnormally excessive voltage. It is specified for high‑temperature ripple endurance at up to 105 °C.

Key Features

• Capacitance & Voltage: 220 µF rated capacitance at 400 V for bulk energy storage and smoothing in high‑voltage circuits.
• High‑temperature Endurance: Specified to withstand rated ripple current for 2000 hours at 105 °C, supporting prolonged operation under thermal stress.
• Ripple Current Performance: Rated ripple current of 900 mA at 120 Hz and 1.035 A at 10 kHz, enabling effective AC ripple handling across common frequencies.
• Safety & Overvoltage Features: LAK series includes improved safety measures and a pressure relief vent designed to operate without dangerous conditions during abnormal excessive voltage events.
• Package & Mounting: Snap‑in (radial, can) snap‑in terminal type for secure board mounting; physical size approximately φ35 mm × 30 mm (height seated max 1.181 inch).
• Operating Range & Tolerance: Polarized capacitor with operating temperature range −25 °C to +105 °C and capacitance tolerance ±20% (at 120 Hz, 20 °C).
• RoHS Compliant: Conforms to RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General‑purpose power filtering: Bulk smoothing and decoupling in power conversion and supply modules where a 400 V, 220 µF polarized capacitor is required.
• Equipment in voltage‑fluctuating environments: Suited to systems exposed to unstable or varying supply voltages due to the LAK series’ improved safety features and extended voltage range.
• High‑temperature operation: Applications that demand sustained ripple endurance at elevated ambient temperatures up to 105 °C.

Unique Advantages

• Extended high‑voltage capability: 400 V rating provides headroom for higher DC systems within the LAK series’ extended voltage range.
• Long endurance under ripple stress: Rated for 2000 hours of applied rated ripple current at 105 °C, supporting long‑lived operation in thermally demanding designs.
• Measured ripple performance: Explicit ripple current specifications at 120 Hz and 10 kHz help engineers match the capacitor to expected operating frequencies.
• Robust safety behavior: Pressure relief vent and improved safety provisions reduce the risk of hazardous failure modes under abnormal voltage conditions.
• Compact snap‑in form factor: Snap‑in terminal enables secure board retention in radial can packaging while keeping a small footprint (φ35 mm × 30 mm).
• Regulatory compliance: RoHS compliance simplifies selection for designs requiring restricted‑substance adherence.

Why Choose LAK2G221MELC30?

The LAK2G221MELC30 combines a high 400 V rating with 220 µF capacitance and elevated temperature endurance, making it a practical choice for designers needing reliable energy storage and ripple handling in voltage‑variable environments. Its snap‑in package and explicit ripple current specifications simplify component selection and mechanical integration for power electronics and general‑purpose equipment.

Backed by Nichicon’s LAK series specification set—covering endurance, safety venting, and RoHS compliance—this capacitor is suitable for applications where long‑term thermal endurance and safe behavior under abnormal voltage conditions are important.

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