UKL1E4R7KDD

The UKL1E4R7KDD is a miniature aluminum electrolytic capacitor from Nichicon's UKL low-leakage series. It is a radial-lead, standard-type electrolytic capacitor specified at 4.7 µF and 25 V, designed for compact circuits that require low leakage and stable performance over a wide temperature range.

Targeted for audio applications, this part combines a small φ5 × 11 mm can with a low dissipation factor and defined ripple current capability, offering a compact, low-leakage smoothing and decoupling option for space-constrained audio circuitry and related electronics.

Key Features

• Capacitance and Voltage — 4.7 µF rated capacitance at 25 V, providing a compact energy-storage element for low-voltage circuitry.
• Low Leakage Current — Low leakage characteristic (specified leakage current 0.235 µA) consistent with the UKL series’ focus on minimizing standby and bias losses.
• Dissipation Factor (tan δ) — tanδ = 0.08 measured at 20°C and 120 Hz, supporting low-loss performance in audio-frequency circuits.
• Ripple Current Capability — Low-frequency ripple current 45 mA at 120 Hz and high-frequency ripple current 90 mA at 10 kHz, suitable for smoothing and decoupling in audio power stages.
• Temperature and Endurance — Rated operating range −40°C to +85°C with endurance specified at 2000 hours at 85°C.
• Compact Radial Package — φ5 × 11 mm can with 2.0 mm lead spacing (±0.5 mm tolerance) in a radial-lead format for through-hole mounting and easy placement in compact assemblies.
• Packaging and Compliance — Available in bulk/bag packing; RoHS compliant.
• Lifecycle Status — End Of Life (products from this series are scheduled to be discontinued).

Typical Applications

• Audio — Compact smoothing and decoupling in audio circuits where low leakage and small size are important for preserving signal integrity and minimizing standby current.
• Audio — Bypass and stabilization for low-voltage analog stages in portable or space-constrained audio modules using a radial through-hole mounting approach.
• Audio — Local power filtering for small amplifiers and preamplifier sections where a low tanδ and defined ripple handling at audio frequencies are required.

Unique Advantages

• Low leakage characteristic: Specified leakage current of 0.235 µA helps maintain bias and reduce standby loss in low-current audio circuitry.
• Compact footprint: Small φ5 × 11 mm can with 2.0 mm lead spacing enables use in dense, space-limited boards.
• Audio-focused electrical profile: Low tanδ (0.08 at 120 Hz) and defined ripple current ratings (45 mA at 120 Hz, 90 mA at 10 kHz) align with requirements of audio smoothing and decoupling.
• Wide temperature range: −40°C to +85°C operating range supports deployment across typical consumer audio and electronic environments.
• Clear endurance specification: 2000 hours at 85°C provides a measurable reliability baseline for thermal stress planning.

Why Choose UKL1E4R7KDD?

UKL1E4R7KDD is positioned for designers who need a compact, low-leakage radial electrolytic capacitor for audio and related low-voltage circuits. The part’s combination of a small can size, well-defined ripple current ratings, low dissipation factor, and conservative endurance rating provides a clear specification foundation for board-level filtering and decoupling in space-constrained designs.

This capacitor is suitable for engineers and procurement teams looking for a documented, RoHS-compliant component with explicit leakage, tanδ, and ripple current values to support predictable behavior in audio applications. Note that this product is at End Of Life; please confirm availability and lead-time considerations before specifying it into new production designs.

To request a quote or check current availability and lead times, please contact sales to submit a quotation request or discuss procurement options.