UKL1C221MPD

The UKL1C221MPD is a low-leakage aluminum electrolytic capacitor in a radial-lead can, rated 220 µF at 16 V. Designed for audio-oriented applications, it combines compact φ10 × 12.5 mm packaging with controlled dissipation factor and leakage for stable performance in signal and power circuits.

Key value comes from measurable low leakage (7.04 µA at 20°C after rated-voltage application), a low tanδ (0.12 at 20°C, 120 Hz), and defined ripple handling across low and high frequencies—enabling predictable behavior in audio and related electronic designs.

Key Features

• Capacitance & Voltage — 220 µF capacitance with a 16 V rating and a tolerance of −20% to +20% (M), suitable where moderate bulk capacitance at low voltage is required.
• Low Leakage Current — Specified leakage current of 7.04 µA (measured after 1 minute at 20°C), following the series leakage definition of 0.002CV (µA), supporting long-term bias stability in circuits sensitive to leakage.
• Low Dissipation Factor — tanδ of 0.12 at 20°C and 120 Hz for the φ10 × 12.5 case size, indicating low loss in AC conditions common to audio frequencies.
• Ripple Current Performance — Rated low-frequency ripple current of 370 mA at 120 Hz and high-frequency ripple current of 555 mA at 10 kHz, supporting both power smoothing and higher-frequency decoupling needs.
• Endurance & Temperature Range — Life rating of 2000 hours at 85°C and operating range from −40°C to +85°C, enabling defined thermal endurance for sustained operation within this window.
• Radial Lead Package — Compact φ10 × 12.5 mm can with 5 mm lead spacing (±0.5 mm) and radial lead mounting for through-hole assemblies; available in bulk or bag packing.
• Regulatory — RoHS compliant.

Typical Applications

• Audio equipment — Suited for audio circuits that require stable bulk capacitance and low leakage to maintain bias and reduce noise in analog stages.
• Power supply decoupling in audio modules — Provides smoothing and ripple handling on low-voltage rails where a 220 µF / 16 V capacitor is required.
• Signal and bias stabilization — Low leakage and low tanδ support bias-hold and low-loss performance in signal-path and preamplifier sections.

Unique Advantages

• Measured low leakage: The 7.04 µA leakage specification (0.002CV) helps preserve bias and reduce offset drift in sensitive circuits.
• Low loss at audio frequencies: tanδ = 0.12 at 120 Hz for the case size provides lower AC loss, supporting cleaner audio performance and efficient energy handling.
• Defined ripple capability across frequencies: Rated ripple currents at 120 Hz and 10 kHz (370 mA and 555 mA respectively) give predictable behavior for both mains-related and higher-frequency switching noise.
• Compact radial form factor: φ10 × 12.5 mm can with 5 mm lead spacing balances PCB real estate and capacitance for through-hole designs.
• Documented endurance: 2000 hours at 85°C provides a quantifiable lifetime metric for thermal stress planning.
• RoHS compliance: Meets RoHS directive requirements for restricted substances.

Why Choose UKL1C221MPD?

The UKL1C221MPD offers a combination of low leakage, low dissipation factor, and well-defined ripple performance in a compact radial-lead package, making it a suitable choice for audio designers and engineers who need predictable capacitor behavior in bias, decoupling, and smoothing roles. Its specified endurance and temperature range support design decisions where operational limits and lifetime must be quantified.

Manufactured by Nichicon as part of the UKL low-leakage series, this part is appropriate for projects requiring clear, verifiable electrical characteristics and physical form for through-hole assemblies.

Request a quote or contact sales to discuss availability and pricing for UKL1C221MPD and to confirm suitability for your specific application.