UKL2A4R7MDD

The UKL2A4R7MDD is an aluminum electrolytic capacitor from Nichicon’s UKL series, engineered for low leakage current in a compact radial-lead package. It delivers 4.7 µF capacitance at a 100 V rating, with low dissipation and defined ripple handling across low and high frequencies.

Targeted for audio and related electronic applications, this radial-lead, polarized capacitor offers measurable benefits where a small footprint, low leakage (0.94 µA), and long endurance (2000 hours at 85°C) are required. Note: Product status is End Of Life.

Key Features

• Capacitance & Voltage: 4.7 µF rated capacitance at 100 V for high-voltage circuit sections that require compact energy storage.
• Low Leakage Current: Measured leakage current of 0.94 µA supports circuits that need minimal self-discharge and stable bias conditions.
• Low Dissipation Factor (tan δ): tanδ = 0.07 measured at 20°C, 120 Hz, indicating low dielectric loss for efficient operation in signal and power conditioning roles.
• Ripple Handling: Rated ripple currents of 50 mA at 120 Hz (low frequency) and 100 mA at 10 kHz (high frequency) for smoothing and decoupling in both power rails and audio paths.
• Endurance and Temperature Range: Life rating of 2000 hours at 85°C with an operating range of −40°C to +85°C for reliable performance under extended thermal stress.
• Compact Radial Package: Can size φ5 × 11 mm with 2 mm lead spacing (±0.5 mm) and radial lead mounting for through-hole assembly and legacy board compatibility.
• Polarized Construction & Packaging: Polarized aluminum electrolytic design; available in bulk (no terminal forming) or bag packing to suit production or repair workflows.
• Regulatory: RoHS compliant.

Typical Applications

• Audio electronics: Use in audio circuits where 100 V rating, low leakage and low dissipation support stable coupling, decoupling, and power filtering.
• Power supply filtering: Compact radial package enables filtering and smoothing in constrained board space while handling defined ripple currents at low and high frequencies.
• Signal conditioning: Low leakage and low tanδ make the part appropriate for applications requiring minimal bias drift and low loss at audio and related frequencies.

Unique Advantages

• Low self-discharge: 0.94 µA leakage current reduces stored-charge loss and bias drift in idle or low-current circuits.
• Low dielectric loss: tanδ of 0.07 (20°C, 120 Hz) minimizes dissipation in signal and power paths, improving efficiency and thermal behavior.
• Dual-frequency ripple capability: Specified ripple current at both 120 Hz and 10 kHz supports both mains-frequency smoothing and higher-frequency decoupling needs.
• Compact through-hole form factor: φ5 × 11 mm radial can with 2 mm lead spacing fits constrained layouts and traditional PCB assembly processes.
• Long-duration endurance: Rated for 2000 hours at 85°C, providing predictable life characteristics under elevated temperature operation.
• Environmental compliance: RoHS compliance for restricted-substance requirements.

Why Choose UKL2A4R7MDD?

UKL2A4R7MDD brings together a high 100 V rating, low leakage, and low loss in a small radial-lead aluminum electrolytic package—an attractive combination for audio engineers and designers needing compact, stable capacitors for filtering, decoupling, and signal applications. The defined ripple ratings at both low and high frequencies and a 2000-hour endurance at 85°C provide predictable behavior in thermal and dynamic environments.

Please note the product is listed as End Of Life; it remains relevant for maintenance, repairs, and legacy boards that require its exact specification set. For engineering or procurement inquiries about availability or alternates, please request a quote or submit an inquiry to our commercial team.

If you need pricing, lead-time details, or a formal quote for UKL2A4R7MDD, request a quote or submit an inquiry and our commercial team will respond with current availability and ordering options.