LGX2W121MELZ35

The LGX2W121MELZ35 from Nichicon is a snap-in terminal aluminum electrolytic capacitor in the LGX series designed for high-voltage power electronics. It delivers 120 µF capacitance at a 450 V rating in a compact radial can with snap-in mounting, optimized for rectifier circuits and switching power supplies.

Engineered for long-life operation, this part withstands rated ripple current for 5000 hours at 105°C and is RoHS compliant, making it suitable for demanding industrial and general-purpose power applications that require elevated temperature reliability.

Key Features

• Capacitance & Voltage — 120 µF nominal capacitance with a 450 V rated voltage and ±20% tolerance, providing energy storage for high-voltage power rails.
• High-temperature, Long-life Design — Specified for operation from −25°C to +105°C and guaranteed to withstand 5000 hours of rated ripple current at 105°C.
• Ripple Current Capability — Rated ripple current of 770 mA at 120 Hz and 1.101 A at 50 kHz, supporting smoothing and filtering in rectifier and converter circuits.
• Snap-in Radial Can Package — Snap-in terminal mounting for secure, PCB-friendly assembly; compact footprint of L: 3.5 × D: 2.2 cm for space-constrained boards.
• Electrical Reliability Parameters — Leakage current specified by I ≤ 3√CV (µA) after 5 minutes at 20°C; tan δ maximum of 0.20 for 450 V at 120 Hz; impedance stability down to −25°C with Z(−25°C)/Z(+20°C) up to 8 for 400–500 V range.
• Endurance and Shelf Life — After endurance test (5000 h at 105°C with rated ripple) capacitance remains within ±20%, tan δ ≤ 200% of initial spec, and leakage current ≤ initial spec; shelf life treatment defined for 1000 h at 105°C with subsequent voltage treatment.
• Regulatory Compliance — Compliant to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Inverter Rectifier Circuits — Suited for smoothing and DC-link applications in general inverters where high-voltage, long-life capacitors are required.
• Switching Power Supplies — Used for input or output filtering and energy buffering in industrial and commercial switching supplies.
• General Power Electronics — Appropriate for applications needing polarized high-voltage capacitors with elevated temperature endurance.

Unique Advantages

• Proven High-temperature Endurance: 5000 hours at 105°C under rated ripple current provides predictable lifespan for designs exposed to sustained elevated temperatures.
• High-voltage Capability: 450 V rating supports higher DC-link and rectifier voltages without series stacking, simplifying BOM and layout.
• Robust Ripple Handling: Specified ripple current values at both low and high frequencies (770 mA at 120 Hz; 1.101 A at 50 kHz) accommodate a range of converter switching profiles.
• Compact Snap-in Package: Radial, snap-in can (3.5 × 2.2 cm) enables secure PCB mounting while conserving board area compared with larger can styles.
• Measurable Reliability Parameters: Clear specs for leakage current, tan δ, impedance ratio, endurance and shelf life make system reliability forecasts and qualification testing straightforward.
• RoHS Compliant: Meets current RoHS requirements for use in regulated markets.

Why Choose LGX2W121MELZ35?

The LGX2W121MELZ35 balances high-voltage capability, long-term thermal endurance and compact snap-in packaging for power electronics applications. Its 450 V rating, 120 µF capacitance and long-life assurance at 105°C make it a practical choice for engineers specifying capacitors for rectifier circuits, switching supplies and general-purpose power designs that must endure sustained ripple and elevated operating temperatures.

As a member of Nichicon’s LGX series, this part provides verifiable electrical and reliability parameters—leakage current formula, tan δ limits, impedance stability and defined endurance/shelf-life behavior—helping engineering and procurement teams evaluate lifetime performance and minimize redesign risk.

Request a quote or submit a procurement inquiry to receive pricing and availability for the LGX2W121MELZ35 and to discuss volume needs or lead-time requirements.