UKL1E681KHD

The UKL1E681KHD is a miniature, radial-lead aluminum electrolytic capacitor from Nichicon's UKL series, designed for applications that require bulk energy storage and low leakage. It delivers 680 µF at a 25 V rating in a compact φ12.5 × 25 mm can.

Targeted for audio applications, this component combines low leakage and low dissipation factor with robust ripple handling and a 2000 h endurance at 85 °C, making it suitable for power smoothing and decoupling roles in consumer and pro-audio circuitry.

Key Features

• Capacitance & Voltage — 680 µF nominal capacitance with a rated voltage of 25 V and a tolerance of ±10% for predictable bulk filtering performance.
• Low Leakage Current — Specified leakage current of 34 µA (measured condition: 20 °C), supporting stable bias voltages and reduced quiescent losses.
• Low Dissipation Factor — tanδ of 0.12 (20 °C, 120 Hz) to minimize internal loss and heat generation during operation.
• Ripple Handling — Low-frequency ripple current of 810 mA at 120 Hz and high-frequency ripple current of 1.215 A at 10 kHz for effective filtering across a wide frequency range.
• Reliability & Endurance — Rated for 2000 hours at 85 °C under rated voltage, supporting long-term operation in thermal-stressed environments.
• Package & Mounting — Radial lead, can-style package (φ12.5 × 25 mm) with 5 mm lead spacing (±0.5 mm) for through-hole PCB mounting.
• Environmental Compliance — RoHS compliant.
• Packaging Options — Available in bulk (no terminal forming) or bag packing to suit assembly and handling preferences.

Typical Applications

• Audio Amplifiers — Bulk power-supply smoothing and decoupling where 680 µF at 25 V provides energy reserve and low leakage preserves bias stability.
• Consumer Audio Electronics — Power filtering in mixers, preamps and powered speakers that benefit from low dissipation factor and solid ripple performance.
• Crossover and Signal Conditioning — Energy storage and decoupling roles in passive/active crossover networks and signal-chain power rails.

Unique Advantages

• Low leakage for stable biasing: 34 µA leakage current supports circuits that require minimal bleed and steady operating points.
• Efficient operation with low loss: tanδ of 0.12 at 120 Hz reduces internal heating and helps maintain performance under load.
• Wide ripple capability: Rated ripple currents of 810 mA (120 Hz) and 1.215 A (10 kHz) enable effective filtering across low and high frequency ripple components.
• Compact radial can: φ12.5 × 25 mm package with 5 mm lead spacing simplifies through-hole integration without sacrificing capacitance.
• Designed for longevity: 2000 hours at 85 °C endurance provides predictable lifetime performance in thermally demanding installations.
• RoHS compliant: Meets environmental regulations for lead-free designs.

Why Choose UKL1E681KHD?

UKL1E681KHD is positioned for audio-focused designs that need compact bulk capacitance with low leakage and reliable ripple performance. Its combination of 680 µF capacitance, 25 V rating, low tanδ and high ripple-current capability makes it a practical choice for power-supply smoothing and decoupling in consumer and professional audio equipment.

With a radial-lead can in a space-conscious footprint and 2000 h endurance at 85 °C, this part offers a balance of size, performance and durability suitable for engineers specifying through-hole electrolytic capacitors where RoHS compliance is required.

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