LASW6121MELB25ZB

The LASW6121MELB25ZB is a snap-in terminal aluminum electrolytic capacitor specified at 120 µF and 420 V, offered in a compact φ30 × 25 mm can style. It is designed as a general-purpose high-voltage electrolytic solution for equipment operating in environments with fluctuating line voltages.

Key value comes from its 105°C rated endurance with 2,000 hours of approved ripple-current application, improved safety features for abnormally excessive voltage, and a compact snap-in package that supports robust mounting in power assemblies. The device is RoHS compliant.

Key Features

• Capacitance & Rated Voltage — 120 µF nominal capacitance at a rated voltage of 420 V for high-voltage smoothing and energy storage in power circuits.
• High-Temperature Endurance — Qualified for 2,000 hours of D.C. bias plus rated ripple current at 105°C; after that test the capacitance change remains within ±20% and leakage current meets initial specified values.
• Ripple Current Performance — Rated ripple current of 750 mA at 120 Hz and 862.5 mA at 10 kHz; frequency coefficients support increased allowable ripple at higher frequencies (1.00 at 120 Hz, 1.15 at 10 kHz or more).
• Improved Safety Features — Pressure relief venting designed to operate under abnormal over-voltage conditions without flame or dangerous dispersion of parts.
• Package & Mounting — Radial, snap-in can package (φ30 × 25 mm) for secure board mounting in power assemblies and chassis installations.
• Electrical Stability — Tangent of loss angle (tan δ) specified at 0.20 max (120 Hz, 20°C); stability at low temperature and impedance characteristics are defined in the series datasheet.
• Operating Range & Tolerance — Polarized capacitor rated for -25°C to +105°C with capacitance tolerance of ±20% (120 Hz, 20°C).
• Environmental Compliance — Compliant to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Power Supplies — Bulk smoothing and energy storage in high-voltage AC/DC and DC/DC converters where stable capacitance at elevated temperatures is required.
• Equipment in Voltage-Fluctuating Areas — Designed specifically for systems exposed to variable supply conditions thanks to enhanced safety features and robust ripple capability.
• Commercial Power Electronics — High-voltage filtering and decoupling in inverters, rectifiers, and other commercial power equipment requiring compact, high-temperature-rated capacitors.

Unique Advantages

• Compact high-voltage solution: 120 µF at 420 V in a φ30 × 25 mm snap-in can reduces board space compared to larger high-voltage capacitors.
• High ripple tolerance at elevated temperatures: Rated ripple current and 2,000-hour endurance at 105°C support continuous operation in demanding thermal environments.
• Improved safety behavior: Pressure relief venting limits hazardous failure modes under abnormal over-voltage conditions, enhancing system reliability.
• Frequency-aware ripple rating: Increased allowable ripple at higher frequencies (coefficient up to 1.15 at 10 kHz+) enables designers to account for switching-frequency effects.
• RoHS-compliant manufacturing: Conforms to relevant RoHS directives for use in regulated commercial and industrial products.
• Secure mechanical mounting: Snap-in radial can package provides a robust board attachment for power assemblies and chassis-mounted designs.

Why Choose LASW6121MELB25ZB?

LASW6121MELB25ZB combines a high-voltage 420 V rating with substantial capacitance in a compact snap-in can, delivering a balance of energy storage and thermal endurance for power-electronics designs. Its 2,000-hour rated endurance at 105°C under rated ripple and improved safety features make it appropriate for equipment exposed to voltage fluctuations or continuous high-stress operation.

This capacitor suits design teams and procurement for industrial and commercial power systems that require verifiable high-temperature performance, defined ripple capability across frequency, and RoHS compliance. The part offers a practical option for reducing board footprint while maintaining the electrical and safety characteristics needed in demanding power assemblies.

Request a quote or submit an inquiry for LASW6121MELB25ZB to check availability, lead times, and pricing for your next design or production run.