LAK2G121MELZ40ZB

The LAK2G121MELZ40ZB from Nichicon is a snap-in terminal aluminum electrolytic capacitor rated for 400 V and 120 µF. It is part of the LAK series designed for general-purpose use and for equipment operating in areas with fluctuating supply voltages.

Built for high-temperature endurance and safety, this radial can capacitor delivers long-term ripple-current capability at elevated temperature while meeting RoHS requirements.

Key Features

• Capacitance & Tolerance — 120 µF nominal with ±20% tolerance at 120 Hz, 20°C.
• High Voltage Rating — Rated at 400 V with the LAK series offering extended voltage options (200 V, 400 V and 420 V).
• Snap-in Radial Package — Snap-in terminal, radial can package for secure board mounting in power assemblies.
• High-Temperature Endurance — Endurance specification: 2000 hours at 105°C with D.C. bias plus rated ripple current applied; capacitance change within ±20% after the test.
• Ripple Current Capability — Specified ripple current: 600 mA at 120 Hz and 690 mA at 10 kHz, supporting ripple handling in power circuits.
• Operating Range — Rated for operation from −25°C to +105°C.
• Leakage and Loss Characteristics — Leakage current limited to I ≤ 3√(C·V) µA (after 5 minutes at 20°C); tan δ ≤ 0.20 at 120 Hz, 20°C.
• Safety Vent Design — Improved safety features including a pressure relief vent designed to operate without producing flames, ignition, or dispersion of capacitor pieces.
• Regulatory Compliance — Compliant with RoHS directive (2011/65/EU, (EU)2015/863).
• Physical Size — Approximate dimensions: Ø22 mm × 40 mm length (radial can, snap-in).

Typical Applications

• Industrial power equipment — Suitable for general-purpose use in equipment exposed to fluctuating supply voltages where sustained ripple handling and thermal endurance are required.
• Power supply smoothing and filtering — Provides bulk capacitance and ripple-current capability for DC filtering in high-voltage power stages.
• High-voltage module designs — Used where a 400 V rated aluminum electrolytic is required; LAK series also available in 200 V and 420 V ratings for design flexibility.

Unique Advantages

• Extended voltage flexibility: Available in 200 V, 400 V and 420 V ratings to match different high-voltage rail requirements.
• High-temperature life: 2000-hour endurance at 105°C under rated ripple current preserves capacitance and limits leakage drift over time.
• Designed for ripple stress: Specified ripple current values at 120 Hz and 10 kHz support robust performance in pulsating power environments.
• Safety-focused construction: Pressure relief vent and improved safety measures reduce risk during abnormal over-voltage conditions.
• RoHS compliant: Meets current RoHS directives for use in modern equipment designs.
• Secure snap-in mounting: Snap-in terminal configuration simplifies installation in power assemblies requiring reliable mechanical retention.

Why Choose LAK2G121MELZ40ZB?

The LAK2G121MELZ40ZB combines a high 400 V rating and 120 µF capacitance in a snap-in radial can designed for long-term operation at elevated temperatures. Its 2000-hour endurance at 105°C under rated ripple current and explicit safety vent provisions make it a practical choice for designs exposed to fluctuating voltages and sustained ripple stress.

This Nichicon LAK-series capacitor is well suited to engineers and procurement teams specifying high-voltage electrolytic bulk capacitance for industrial power supplies, high-voltage modules, and general-purpose equipment where RoHS compliance and reliable high-temperature performance are required.

For pricing, availability, or to request a quote for LAK2G121MELZ40ZB, please submit an inquiry or contact sales for further assistance.