UKL1E4R7MDD

The UKL1E4R7MDD is a radial‑lead aluminum electrolytic capacitor designed for low leakage current in compact, through‑hole packages. With a capacitance of 4.7 µF at a 25 V rating, it targets audio and other sensitive analog circuits where low leakage and stable performance matter.

Key attributes include a measured leakage current of 0.235 µA, a low loss tangent (tanδ = 0.08 at 20°C, 120 Hz), and a rated endurance of 2000 hours at 85°C, offering predictability for sustained operation in temperature‑constrained designs.

Key Features

• Low Leakage Current Measured leakage current of 0.235 µA supports circuits that require minimal DC loss and stable biasing over time.
• Electrical Performance 4.7 µF capacitance with a tolerance of −20% to +20% and a dissipation factor (tanδ) of 0.08 (20°C, 120 Hz) for reliable filtering and decoupling in audio paths.
• Ripple Handling Rated low‑frequency ripple current of 45 mA at 120 Hz and high‑frequency ripple current of 90 mA at 10 kHz, enabling use in both power smoothing and higher‑frequency decoupling tasks.
• Reliability & Endurance Life specification of 2000 hours at 85°C provides an established expectancy for continuous operation under rated conditions.
• Compact Radial Package Small form factor (φ5 × 11 mm) with 2 mm lead spacing (±0.5 mm) in a radial can package for straightforward through‑hole mounting and placement in compact boards.
• Wide Operating Temperature Rated for −40°C to +85°C operation to cover a broad range of ambient conditions encountered in consumer and professional audio equipment.
• RoHS Compliant Conforms to RoHS requirements for environmental compliance.

Typical Applications

• Audio equipment Low leakage and low dissipation factor make the UKL1E4R7MDD suitable for audio circuits where signal integrity and stable bias are important, such as coupling/decoupling and power supply smoothing in amplifiers and preamps.

Unique Advantages

• Minimized DC leakage: The specified 0.235 µA leakage current reduces unwanted bias shifts in sensitive analog and audio circuits.
• Low loss for cleaner audio: A tanδ of 0.08 at 20°C/120 Hz helps maintain low equivalent series resistance and lower audible distortion in signal paths.
• Dual ripple capability: Explicit ripple ratings at both 120 Hz and 10 kHz (45 mA / 90 mA) allow designers to assess performance across typical power‑supply and switching environments.
• Compact footprint: The φ5 × 11 mm radial can with 2 mm lead spacing enables dense board layouts while retaining through‑hole robustness.
• Documented endurance: 2000 hours at 85°C provides a clear reliability baseline for product lifetime planning.
• Environmental compliance: RoHS compliance simplifies regulatory considerations for consumer and professional products.

Why Choose UKL1E4R7MDD?

The UKL1E4R7MDD combines low leakage, low dissipation factor, and defined ripple and endurance specifications in a compact radial package, making it a practical choice for audio and other analog applications that demand stable biasing and predictable lifetime behavior. Its compact φ5 × 11 mm can and 2 mm lead spacing support space‑constrained boards while preserving through‑hole mounting reliability.

This part is suited to engineers and procurement teams designing or supporting audio equipment and related analog systems who need verifiable electrical characteristics and environmental compliance for straightforward integration into existing designs.

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