LAKW6121MELZ45

The LAKW6121MELZ45 is a snap-in terminal aluminum electrolytic capacitor from Nichicon's LAK series, rated 120 µF at 420 V. It is a polarized, radial can snap-in component designed for general-purpose power applications that experience voltage fluctuation and elevated operating temperatures.

Key value propositions include high-temperature endurance (105°C permissible abnormal voltage), established safety features for excessive voltage conditions, and tray packing for mass-production handling.

Key Features

• Capacitance & Voltage — 120 µF nominal capacitance with a rated voltage of 420 V; capacitance tolerance ±20% (at 120 Hz, 20°C).
• High-temperature Endurance — Designed for operation from -25°C to +105°C with endurance of 2000 hours at 105°C under rated ripple and DC bias conditions.
• Ripple Handling — Specified ripple current performance: 750 mA at 120 Hz and 862.5 mA at 10 kHz, suitable for smoothing and filtering in power circuits.
• Safety and Reliability — Improved safety features for abnormally excessive voltage and a pressure relief vent designed to operate without dangerous ignition or dispersion of parts.
• Leakage and Loss Characteristics — Leakage current defined as I ≤ 3√CV (μA) after 5 minutes at 20°C; tan δ ≤ 0.20 at 120 Hz, 20°C.
• Package & Mounting — Snap-in radial can (φ22 × 45 mm), tray packing for mass production, and white-on-black sleeve marking for clear identification.
• RoHS Compliant — Conforms to RoHS directive requirements as stated for the LAK series.

Typical Applications

• Power Supply Filtering — Bulk smoothing and ripple suppression in high-voltage AC/DC and DC/DC converters where 420 V rating and high ripple endurance are required.
• Industrial Power Equipment — Energy storage and filtering for equipment subject to voltage fluctuations and elevated ambient temperatures.
• Motor Drives and Inverters — DC link and smoothing applications that benefit from the part’s high-voltage rating and specified ripple current capability.

Unique Advantages

• High-Voltage Capability: 420 V rating supports designs that require extended voltage range within the LAK series scope.
• 105°C Rated Endurance: Rated for 2000 hours at 105°C under D.C. bias plus rated ripple current, providing predictable performance in high-temperature environments.
• Defined Ripple Performance: Published ripple current values at 120 Hz and 10 kHz allow accurate thermal and reliability planning for power applications.
• Built-in Safety Measures: Pressure relief vent and series safety design reduce risk during abnormal overvoltage events without ignition or dispersal of parts.
• Manufacturing-Ready Packaging: Tray packing and mass-production availability support efficient assembly-line integration and inventory management.
• Clear Electrical Characteristics: Specified leakage current formula and tan δ limit simplify verification during design validation and quality control.

Why Choose LAKW6121MELZ45?

The LAKW6121MELZ45 combines high-voltage capability, high-temperature endurance, and defined ripple performance in a snap-in radial can tailored for general-purpose power applications. Its safety features for abnormal voltage conditions and clear electrical specifications make it suitable for designs that must tolerate voltage fluctuation while maintaining predictable long-term behavior.

This part is well suited for engineers and procurement teams seeking a production-ready aluminum electrolytic solution from Nichicon, with packaging and specifications aligned to high-volume assembly and reliability-focused power designs.

Request a quote or submit an inquiry for pricing, availability, and lead-time information for the LAKW6121MELZ45.