UKL2A220KPD

The UKL2A220KPD is a radial-lead aluminum electrolytic capacitor from Nichicon’s UKL series, engineered for low leakage current performance. It provides 22 µF capacitance at a 100 V rating in a compact φ10 × 12.5 mm can and is intended for applications that benefit from low loss and controlled ripple handling.

Key attributes include low leakage current, low dissipation factor, and defined ripple current ratings; the part is targeted at audio and related electronics where these electrical characteristics matter. Note: this part is listed as End Of Life and is not recommended for new designs.

Key Features

• Capacitance and Voltage — 22 µF rated capacitance with a 100 V working voltage, tolerance ±10% suitable for higher-voltage circuits requiring compact energy storage.
• Low Leakage Current — Specified leakage current of 4.4 µA (measured at 20°C after application of rated voltage), minimizing standby losses and bias drift in DC circuits.
• Low Dissipation Factor (tan δ) — tan δ of 0.07 at 20°C, 120 Hz, indicating low dielectric loss for improved efficiency in AC and audio-frequency applications.
• Ripple Current Ratings — Low-frequency ripple current of 136 mA at 120 Hz and high-frequency ripple current of 272 mA at 10 kHz, enabling reliable operation under AC ripple stress within specified limits.
• Temperature and Endurance — Operating range −40°C to +85°C with endurance of 2000 hours at 85°C under rated voltage, providing defined life characteristics for thermal planning.
• Package and Mounting — Radial-lead can, size φ10 × 12.5 mm with 5 mm lead spacing (±0.5 mm), polarization marking for straightforward PCB through-hole assembly.
• Regulatory Status — RoHS compliant.

Typical Applications

• Audio — Use in audio circuits where low leakage and low dissipation factor help maintain signal integrity and reduce noise in coupling, decoupling, or power supply sections.

Unique Advantages

• Reduced standby losses: Low leakage current (4.4 µA) helps maintain DC accuracy and reduces power loss in bias circuits.
• Improved audio performance: Low tan δ (0.07 at 120 Hz) minimizes dielectric loss, supporting cleaner signal paths in audio applications.
• High-voltage capability in a compact can: 100 V rating in a φ10 × 12.5 mm package enables higher-voltage designs without a large footprint.
• Defined ripple handling: Specified ripple currents at 120 Hz and 10 kHz (136 mA and 272 mA) allow predictable thermal and lifetime planning under AC stress.
• Clear lifecycle specification: 2000 hours endurance at 85°C under rated voltage provides a quantifiable reliability metric for design validation.
• RoHS compliant: Meets environmental regulatory requirements for lead-free assemblies.

Why Choose UKL2A220KPD?

UKL2A220KPD combines low leakage, low dissipation factor, and a 100 V rating in a small radial-lead aluminum can, making it suitable for designs that require compact, low-loss energy storage and predictable ripple performance. The part's published endurance and temperature range allow engineers to plan lifetimes and thermal margins with defined parameters.

Please note this specific part is End Of Life and is not recommended for new designs; it remains applicable where existing designs require direct replacement or legacy BOM continuity.

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