LASW6121MELB25

The LASW6121MELB25 from Nichicon is a snap-in terminal aluminum electrolytic capacitor in the LAS series, rated 420 V with 120 µF capacitance. It is designed for general-purpose high-voltage applications and for equipment used in areas subject to voltage fluctuations.

Key value props include high-temperature endurance (105°C), extended rated ripple-current capability for 2000 hours at 105°C, a compact snap-in radial can package, improved safety against abnormally excessive voltage, and RoHS compliance.

Key Features

• Electrical Rating — 120 µF capacitance at a 420 V rated voltage with ±20% tolerance, polarized for high-voltage DC applications.
• High-temperature Endurance — Specified operating range of −25°C to +105°C and endurance of 2000 hours at 105°C when subjected to D.C. bias plus rated ripple current.
• Rated Ripple Current — Handles 750 mA at 120 Hz (low frequency) and 862.5 mA at 10 kHz (high frequency); frequency coefficients are provided for ripple-current scaling across frequencies.
• Safety under Abnormal Voltage — Improved safety features and a pressure relief vent designed to operate without dangerous conditions under abnormal excessive voltage scenarios.
• Compact Snap-in Package — Radial, can-type snap-in mounting for secure PCB installation and higher ripple capability compared with the LAQ series.
• RoHS Compliant — Conforms to RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Power Supplies — Smoothing and bulk capacitance in high-voltage DC power supplies where rated ripple handling and 105°C endurance are required.
• Equipment in Voltage-fluctuating Areas — Designed specifically for equipment operating in environments with unstable supply voltages thanks to improved safety performance under abnormal voltage.
• High-temperature Installations — Useful where components must tolerate continuous operation up to 105°C and maintain capacitance, tan δ, and leakage within specified limits.
• General-purpose High-voltage Circuits — Applicable where polarized aluminum electrolytic capacitance is needed with snap-in mounting and verified ripple current capability.

Unique Advantages

• Long Endurance at Elevated Temperature: 2000 hours rated endurance at 105°C under rated ripple current provides predictable long-term performance in hot environments.
• High Ripple Capability: Specified ripple-current ratings at 120 Hz and 10 kHz, plus frequency coefficients, let designers size capacitors precisely for AC ripple conditions.
• Enhanced Safety Features: Pressure relief vent and design measures reduce the risk of dangerous failure modes under abnormally excessive voltage.
• Compact Snap-in Form Factor: Radial snap-in can enables secure PCB mounting while offering smaller case sizes and higher ripple handling compared to earlier LAQ series parts.
• RoHS Compliance: Meets EU RoHS requirements (2011/65/EU, (EU)2015/863) for restricted substances.

Why Choose LASW6121MELB25?

The LASW6121MELB25 is positioned for designs that require high-voltage aluminum electrolytic capacitance with proven high-temperature endurance and enhanced safety for environments with fluctuating supply voltages. Its 420 V rating, 120 µF capacitance and documented ripple-current performance make it suitable for demanding power applications that need reliable smoothing and energy buffering at elevated temperatures.

As part of Nichicon’s LAS series, this capacitor delivers measurable, specification-backed benefits—long life at 105°C, clear frequency coefficients for ripple scaling, and safety features for abnormal-voltage scenarios—helping engineers design robust high-voltage power systems with predictable behavior over time.

To request a quote or to discuss availability and volume pricing, please contact our sales team or submit a request for a formal quotation.