UKW2A221MHD

The UKW2A221MHD is a radial-lead aluminum electrolytic capacitor from Nichicon’s UKW series, optimized for audio and AV equipment applications. It delivers 220 µF capacitance at a 100 V rating in a compact radial can package designed for power supply filtering and decoupling in consumer and professional audio systems.

Built to the UKW series specification, this part balances low dissipation, defined ripple capability, and extended endurance to address demanding audio circuit requirements while remaining RoHS compliant and available in mass production packaging.

Key Features

• Capacitance & Voltage — 220 µF rated capacitance with a 100 V working voltage, providing substantial energy storage for high-voltage audio supply rails.
• Low Dissipation (tan δ) — tanδ of 0.08 measured at 20°C and 120 Hz (at 100 V), supporting lower loss in audio signal power paths.
• Ripple Current Capability — Low-frequency ripple current 600 mA (120 Hz) and high-frequency ripple current 900 mA (10 kHz), enabling effective smoothing across a range of operating frequencies.
• Leakage Current — Specified leakage current of 660 µA, suitable for DC-biased filter applications where controlled leakage is required.
• Endurance & Temperature Range — Rated for 2000 hours at 85°C with an operating temperature range of −40°C to +85°C, offering predictable long-term performance under elevated operating temperatures.
• Package & Mechanical — Radial can (φ12.5 × 25 mm / L: 2.5 cm × D: 1.25 cm) with 5 mm lead spacing (±0.5 mm). Available in bulk (no terminal forming) and bag packing for flexible assembly handling.
• Polarized Design & Tolerance — Polarized construction with capacitance tolerance ±20% (120 Hz, 20°C), matching common requirements for power supply and coupling circuits in audio equipment.
• Regulatory — RoHS compliant.

Typical Applications

• Audio Power Supplies — Bulk filtering and smoothing on amplifier and preamp supply rails where 100 V rating and 220 µF capacitance are required.
• AV Equipment — Energy storage and decoupling in consumer and professional AV systems, aligned with the UKW series focus on audio performance.
• Amplifier Decoupling — Local decoupling for high-voltage amplifier stages to maintain stable bias and reduce supply ripple across audio frequency bands.

Unique Advantages

• High Voltage Capability: 100 V rating provides headroom for higher-voltage audio and AV power designs.
• Measured Low Loss: tanδ = 0.08 at 120 Hz (20°C) reduces dissipation in signal-critical power circuits.
• Wide Ripple Handling Range: Specified ripple currents at 120 Hz and 10 kHz support both low- and high-frequency smoothing requirements.
• Durability at Elevated Temperature: 2000 hours endurance at 85°C supports long-term reliability in thermally stressed installations.
• Compact Radial Form Factor: φ12.5 × 25 mm can with 5 mm lead spacing provides a space-efficient solution for through-hole boards.
• Production-ready Packaging: Offered in bulk (no terminal forming) and bag packing with mass production status for volume procurement.

Why Choose UKW2A221MHD?

The UKW2A221MHD combines a 220 µF capacitance and 100 V rating in a compact radial can tailored for audio and AV applications. Its low dissipation factor and specified ripple current values make it well suited for power supply smoothing and decoupling tasks where audio fidelity and stable DC rails are priorities.

Manufactured under Nichicon’s UKW series and supplied in production-ready packaging, this capacitor is a practical choice for designers and procurement teams seeking a reliable, RoHS-compliant electrolytic component with documented endurance at elevated temperature and clear mechanical specifications.

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