LAK2G121MELA30

The LAK2G121MELA30 is a snap‑in terminal aluminum electrolytic capacitor from Nichicon’s LAK series, rated 400 V and 120 µF with a −25°C to +105°C operating temperature range. It is designed for general‑purpose power electronics and equipment exposed to fluctuating supply voltage, delivering long endurance under elevated temperature and ripple conditions.

Key value propositions include extended high‑voltage support (200 V, 400 V and 420 V options within the series), endurance for 2000 hours at 105°C under rated ripple current, and built‑in safety measures for abnormally excessive voltage events.

Key Features

• Capacitance and Voltage: 120 µF nominal capacitance with a 400 V rated voltage and ±20% tolerance, suitable for high‑voltage smoothing and energy storage in general‑purpose power circuits.
• High‑temperature Endurance: Rated for operation up to 105°C and specified to withstand 2000 hours of D.C. bias plus rated ripple current at 105°C with defined limits for capacitance change, tan δ and leakage current.
• Ripple Current Capability: Specified ripple current handling of 600 mA at 120 Hz and 690 mA at 10 kHz, supporting continuous ripple loading in power conversion and filtering stages.
• Safety Performance: Improved safety features for abnormally excessive voltage, including a pressure relief vent that operates under test conditions to prevent dangerous conditions such as flames or case dispersion.
• Package and Mounting: Radial, can-type snap‑in package for secure board mounting and mechanical stability; physical size approximately L: 3 × D: 2.5 cm with a snap‑in terminal form factor.
• Electrical Characteristics: Low loss with tan δ ≤ 0.20 (120 Hz, 20°C) and leakage current characterized by I ≤ 3√(C·V) µA after five minutes at 20°C.
• Regulatory Compliance: RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• Power conversion and filtering: Bulk smoothing and ripple filtering in high‑voltage power supplies and converters where 400 V nominal ratings are required.
• Equipment exposed to fluctuating voltages: Use in industrial or commercial systems operating in environments with variable supply conditions—designed to tolerate abnormal voltage events.
• General‑purpose high‑voltage circuits: Decoupling and energy storage in a range of general‑purpose applications where snap‑in mounting and high‑temperature endurance are beneficial.

Unique Advantages

• Extended voltage options: Part of a series offering 200 V, 400 V and 420 V ratings, enabling selection for specific system voltage requirements.
• Long high‑temperature lifetime: Endurance specification of 2000 hours at 105°C under rated ripple current provides predictable lifetime performance for elevated‑temperature environments.
• Robust ripple handling: Defined ripple current ratings at both low and high frequencies help designers size components for real operating conditions.
• Built‑in safety venting: Pressure relief vent and safety design mitigate risks from abnormal overvoltage events, improving system safety behavior.
• Secure snap‑in mounting: Radial snap‑in can package simplifies assembly and provides reliable mechanical retention on PCBs.
• RoHS compliance: Meets applicable RoHS directives for material restrictions.

Why Choose LAK2G121MELA30?

The LAK2G121MELA30 is positioned for designs that require a high‑voltage, high‑temperature electrolytic capacitor with defined endurance under continuous ripple loading. Its 400 V rating, 120 µF capacitance, and 105°C endurance make it suitable for general‑purpose power electronics and equipment operating in environments with supply variability.

Manufactured by Nichicon and built on the LAK series platform, this part provides specific, verifiable performance limits (ripple current, leakage, tan δ, endurance and safety venting) that simplify component selection and risk assessment for engineers specifying capacitors for long‑life, high‑voltage applications.

If you would like pricing, availability, or a quotation for LAK2G121MELA30, request a quote or contact sales to discuss lead time and ordering options.