UVK2W221MRD

The UVK2W221MRD is a polarized aluminum electrolytic capacitor in Nichicon’s UVK miniature series, offering 220 µF capacitance at a 450 V rating. This radial-lead, can-style capacitor targets general-purpose high-voltage applications where compact size, RoHS compliance and reliable performance at elevated voltages are required.

Designed with a 2000-hour endurance at 85 °C and specified ripple current characteristics at both low and high frequencies, the UVK2W221MRD supports stable filtering and energy handling in demanding power circuits.

Key Features

• Capacitance & Rated Voltage — 220 µF nominal capacitance with a 450 V rated voltage and ±20% tolerance, suitable for high-voltage smoothing and energy storage within its rating.
• Miniature Series Packaging — Part of the UVK miniature-sized series (one rank smaller case sizes than UVR), providing a compact φ25 × 50 mm can footprint (L: 5 × D: 2.5 cm) with radial lead mounting and 12.5 mm lead spacing.
• Endurance & Temperature — Rated lifetime of 2000 hours at 85 °C; operating temperature range for this 450 V part is −25 °C to +85 °C.
• Loss Angle (tan δ) — Specified tan δ up to 0.25 for the 350–450 V range, measured at 120 Hz, 20 °C.
• Leakage Current — Leakage current characteristic provided (listed as 4060 µA in product data) and governed by the series’ leakage current specifications for high-voltage parts.
• Ripple Current — Rated ripple current of 350 mA at 120 Hz and 560 mA at 10 kHz to support AC ripple handling in DC link and filtering applications.
• Packaging & Mounting — Radial lead, can package; supplied in bulk (no terminal forming) / bag packing for manual or wave-through assembly processes.
• RoHS Compliant — Meets applicable RoHS directive requirements as noted for the UVK series.

Typical Applications

• General-purpose power circuits — Energy storage and smoothing in high-voltage power electronics where a 450 V, 220 µF polarized capacitor is required.
• Industrial electronics — Filtering and decoupling in industrial power supplies and control equipment operating within −25 °C to +85 °C.
• Prototyping and repair — Radial-lead can construction and bulk/bag packing make this capacitor suitable for bench assembly, replacements, and small-volume builds.

Unique Advantages

• High-voltage capability: 450 V rating enables use in circuits that require substantial DC blocking or bulk energy storage at elevated voltages.
• Compact footprint: Miniature UVK series sizing (one rank smaller than UVR) provides a space-efficient solution for high-voltage capacitors in a φ25 × 50 mm can.
• Defined endurance: 2000 hours at 85 °C gives a clear, verifiable lifetime metric for planning thermal and reliability margins.
• Dual-frequency ripple specs: Ripple current ratings at both 120 Hz and 10 kHz allow designers to evaluate AC performance across low and high-frequency environments.
• Radial can packaging: Simple radial-lead mechanical interface and bulk/bag supply support manual insertion and through-hole assembly workflows.
• Regulatory alignment: RoHS compliance supports use in assemblies requiring restricted-substance conformance.

Why Choose UVK2W221MRD?

The UVK2W221MRD positions itself as a compact, high-voltage aluminum electrolytic capacitor for general-purpose power applications. Its 220 µF / 450 V rating, defined ripple current values at multiple frequencies, and a 2000-hour endurance at 85 °C make it straightforward to specify into designs that need verified thermal and electrical behavior.

This part suits engineers and procurement teams looking for a radial-lead, can-style capacitor in a smaller UVK series footprint with clear leakage, tan δ and lifetime characteristics, and RoHS compliance for regulated markets.

Request a quote or contact sales to discuss availability, pricing and how UVK2W221MRD can fit into your high-voltage power designs.