LGX2H121MELZ50

The LGX2H121MELZ50 is a Nichicon LGX series aluminum electrolytic capacitor in a snap‑in terminal radial can. It provides 120 µF capacitance at a 500 V rating and is designed for long‑life operation in power electronics.

Engineered for rectifier circuits in general inverters and switching power supplies, this smaller‑sized snap‑in capacitor combines high voltage capability, long endurance at elevated temperature, and board‑secure mounting for general purpose power applications.

Key Features

• Electrical: 120 µF, 500 V — Rated capacitance of 120 µF at a 500 V working voltage for high‑voltage power circuits.
• Long life assurance — Endurance specified as 5000 hours with rated ripple current applied at 105 °C.
• High ripple handling — Rated ripple current of 930 mA at 120 Hz and 1.33 A at 100 kHz to support rectification and smoothing tasks in power supplies.
• Temperature range — Specified operating temperature from −25 °C to 105 °C to meet typical industrial power‑electronics environments.
• Leakage current spec — Leakage current defined as I ≤ 3√CV (µA) after 5 minutes at 20 °C, enabling predictable bias behavior in designs.
• Mounting and packaging — Snap‑in radial can package for secure board installation with a compact footprint (L: 5 × D: 2.2 cm).
• Capacitance tolerance & polarity — ±20% tolerance at 120 Hz, 20 °C and polarized construction for DC filtering and smoothing.
• RoHS compliant — Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General inverter rectifier circuits — Used for input/output rectification and smoothing in inverter power stages where high voltage and ripple endurance are required.
• Switching power supplies — Provides bulk capacitance and ripple current capability for DC bus filtering in switching regulators and PSUs.
• General purpose power filtering — Suitable for board‑level DC smoothing and energy storage in a range of industrial and commercial power systems.

Unique Advantages

• High‑voltage capability: 500 V rating supports demanding DC bus and rectifier applications without series stacking.
• Proven long‑life endurance: Specified 5000 hours at 105 °C under rated ripple current, offering predictable long‑term performance in elevated temperatures.
• Robust ripple performance: Dual ripple ratings (120 Hz and 100 kHz) make behavior predictable across low and high frequency rectification scenarios.
• Compact snap‑in format: Smaller‑sized radial can with snap‑in terminals simplifies secure PCB mounting while saving board area.
• Controlled leakage behavior: Leakage current limited by the I ≤ 3√CV formula for consistent start‑up and standby characteristics.
• Regulatory compliance: RoHS conformity supports use in assemblies targeting restricted‑substance compliance.

Why Choose LGX2H121MELZ50?

LGX2H121MELZ50 is positioned for engineers who need a high‑voltage electrolytic capacitor with long‑life endurance and reliable ripple handling in a compact snap‑in package. Its 500 V rating, defined ripple current performance, and 5000‑hour endurance at 105 °C make it suitable for demanding rectifier and power‑supply roles where predictable electrical behavior and thermal resilience are required.

This Nichicon LGX series part delivers measurable design value through specified leakage limits, standardized capacitance tolerance, and a form factor that eases board mounting—helping reduce design iteration and provide consistent performance over the specified lifetime.

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