UKL1C221KPD

The UKL1C221KPD is a radial-lead aluminum electrolytic capacitor from Nichicon’s UKL series, engineered for low leakage current in compact through-hole housings. It delivers 220 µF at 16 V with a ±10% tolerance and is targeted for audio applications where low leakage and reliable ripple handling are important.

Designed in a φ10 × 12.5 mm can with 5 mm lead spacing, this capacitor offers measurable ripple performance (370 mA at 120 Hz, 555 mA at 10 kHz), a low leakage current of 7.04 µA, and an operating temperature range of −40 °C to 85 °C with a rated endurance of 2000 hours at 85 °C.

Key Features

• Capacitance & Voltage — 220 µF rated capacitance at 16 V with ±10% tolerance for predictable charge storage in power and signal circuits.
• Low Leakage Current — Specified leakage current of 7.04 µA, suitable where minimal standby drain and stable bias conditions are required.
• High Ripple Handling — Low-frequency ripple current of 370 mA (120 Hz) and high-frequency ripple current of 555 mA (10 kHz) for effective smoothing in power rails and audio supplies.
• Compact Radial Package — φ10 × 12.5 mm aluminum can, radial lead mounting with 5 mm lead spacing (±0.5 mm), enabling straightforward through-hole assembly.
• Temperature & Endurance — Operating range −40 °C to 85 °C and rated for 2000 hours at 85 °C, providing defined lifecycle expectations for design planning.
• Compliance & Packaging — RoHS compliant; available in bulk (no terminal forming) or bag packing for flexible procurement and assembly handling.
• Polarized Electrolytic — Polarized component suitable for typical electrolytic capacitor uses where polarity is observed.

Typical Applications

• Audio power supply filtering — Provides smoothing and energy storage on audio device power rails to support stable amplifier performance.
• Audio signal coupling and decoupling — Used where low leakage helps preserve bias conditions and reduce unwanted DC shift in audio circuits.
• Through-hole audio equipment assemblies — Radial lead form factor simplifies hand or wave-solder assembly in consumer and pro-audio PCB designs.

Unique Advantages

• Low standby drain: The 7.04 µA leakage current specification minimizes undesired current draw in idle or low-power audio circuits.
• Robust ripple capability: Rated ripple currents at both low and high frequencies (370 mA @120 Hz, 555 mA @10 kHz) help maintain clean supply rails across audio bandwidths.
• Space-efficient radial can: φ10 × 12.5 mm footprint provides a compact solution for through-hole layouts without sacrificing capacitance.
• Predictable lifecycle: 2000 hours endurance at 85 °C enables reliable life budgeting for designs operating within the specified temperature range.
• RoHS compliant packaging options: Bulk or bag packing choices support different production and inventory workflows while meeting environmental directives.
• Tight tolerance: ±10% capacitance tolerance offers closer matching for designs that require consistent filter and timing characteristics.

Why Choose UKL1C221KPD?

UKL1C221KPD is well suited for audio-focused designs that need a compact, low-leakage aluminum electrolytic capacitor with defined ripple-handling and endurance characteristics. Its radial can form, modest footprint, and clear electrical specifications make it practical for through-hole audio assemblies and power-conditioning roles within that domain.

Choose this part when your design priorities include low leakage, measurable ripple performance across low and high frequencies, RoHS compliance, and predictable operating life at temperatures up to 85 °C.

Request a quote or submit a parts inquiry for UKL1C221KPD to check current availability, pricing, and lead time for your project evaluation.