UVK2G221MRD

The UVK2G221MRD is a radial-lead, miniature-sized aluminum electrolytic capacitor in Nichicon’s UVK series, specified for general-purpose applications that require high-voltage capacitance. It delivers 220 µF at a 400 V rating in a compact φ22 × 50 mm can with polarized leads and is suitable for circuits operating between -40°C and 85°C.

Designed for engineers needing a compact high-voltage electrolytic solution, this part combines a 400 V rating, defined ripple-current capability at both low and high frequencies, and a 2000 hour endurance at 85°C.

Key Features

• Electrical Capacity: 220 µF capacitance with tolerance -20% to +20% at 120 Hz and 20°C, providing predictable charge storage for high-voltage circuits.
• High Voltage Rating: Rated for 400 V operation—suitable where elevated DC bus voltages are present.
• Loss Angle (tan δ): tanδ = 0.25 measured at 20°C, 120 Hz and 400 V, giving a defined dissipation characteristic for design verification.
• Ripple Current Performance: Low-frequency ripple current rated at 650 mA (120 Hz) and high-frequency ripple current rated at 1.04 A (10 kHz), supporting a range of switching and line conditions.
• Leakage Current: Specified leakage current of 3620 µA as provided in the product data.
• Reliability / Endurance: Life rating of 2000 hours at 85°C with performance criteria defined for capacitance change, tanδ, and leakage current after endurance testing.
• Mechanical & Mounting: Radial lead, polar can package with overall size φ22 × 50 mm and 10 mm lead spacing (±0.5 mm), offered in bulk (no terminal forming) or bag packing.
• Operating Temperature: Rated for -40°C to +85°C operation, covering a wide range of ambient conditions.
• Environmental Compliance: RoHS compliant as indicated for the UVK series.

Typical Applications

• General-purpose power supplies: Use where 220 µF at 400 V is required for bulk energy storage or DC bus support in high-voltage supplies.
• Industrial power electronics: Suitable for assemblies that need a compact radial high-voltage capacitor with defined ripple-current capability and 2000 h endurance at 85°C.
• High-voltage DC modules: Fits designs requiring polarized aluminum electrolytic capacitance with 400 V rating and compact φ22 × 50 mm packaging.

Unique Advantages

• 400 V rated capability: Enables use in higher-voltage DC circuits without upsizing capacitor value or package.
• Compact, miniature size: φ22 × 50 mm can helps conserve PCB and enclosure space while delivering 220 µF capacitance.
• Defined ripple performance: Separate low-frequency and high-frequency ripple current ratings (650 mA @120 Hz, 1.04 A @10 kHz) allow clearer thermal and reliability planning.
• Proven endurance spec: 2000 hours at 85°C provides a measurable lifetime baseline for system reliability assessments.
• RoHS compliant: Meets environmental directive requirements noted for the UVK series.
• Practical packaging options: Available in bulk (no terminal forming) or bag packing to match assembly and handling preferences.

Why Choose UVK2G221MRD?

The UVK2G221MRD positions itself as a compact, high-voltage aluminum electrolytic solution for engineers designing general-purpose and industrial power systems. Its 400 V rating, 220 µF capacitance, and defined ripple-current specifications make it straightforward to integrate where elevated DC voltages and controlled ripple handling are required.

With a 2000 hour endurance at 85°C, RoHS compliance, and radial-lead packaging in a φ22 × 50 mm can, this capacitor suits designs prioritizing a balance of voltage capability, footprint, and verifiable lifetime performance.

Request a quote or contact sales to check availability, lead time, and technical support for integrating UVK2G221MRD into your next design.