UKL1H4R7MDD

The UKL1H4R7MDD from Nichicon is a low-leakage aluminum electrolytic capacitor in a radial-lead can. It is specified at 4.7 µF and 50 V, with a compact φ5 × 11 mm package and 2 mm lead spacing, designed for applications that require a small, polarized electrolytic with controlled leakage and dissipation.

This part is targeted at audio applications where low leakage and low dissipation factor are important. Status: End Of Life — products are scheduled to be discontinued and are not recommended for new designs.

Key Features

• Capacitance & Voltage — 4.7 µF nominal capacitance with a rated voltage of 50 V and a tolerance of −20% to +20%.
• Low Leakage Current — Specified leakage current of 0.47 µA (measured condition: 20°C), supporting circuits sensitive to leakage.
• Low Dissipation Factor — tanδ (DF) of 0.08 measured at 20°C, 120 Hz, helping reduce loss in AC applications.
• Ripple Current Ratings — Low-frequency ripple current 45 mA at 120 Hz and high-frequency ripple current 90 mA at 10 kHz, enabling defined AC stress handling.
• Endurance & Temperature Range — Rated life of 2000 hours at 85°C and usable over −40°C to 85°C operating range.
• Package & Mounting — Radial lead can (φ5 × 11 mm), lead spacing 2.0 mm (±0.5 mm), supplied in Bulk (no terminal forming) or Bag packing for through-hole assembly.
• Compliance — RoHS compliant; manufactured by Nichicon as part of the UKL series.

Typical Applications

• Audio circuits — Suited for audio-related circuits where low leakage and low dissipation factor contribute to stable signal coupling and decoupling behavior.
• Audio power stages — Use in stages requiring a compact polarized capacitor with specified ripple-handling capability.
• Audio input/output networks — Applicable where a small, low-leakage electrolytic is required for biasing or filtering in audio paths.

Unique Advantages

• Low leakage performance — 0.47 µA leakage minimizes DC loss and drift in sensitive circuits.
• Defined loss characteristics — tanδ = 0.08 at 20°C, 120 Hz gives predictable AC loss behavior for design tuning.
• Compact radial form factor — φ5 × 11 mm can and 2 mm lead spacing enable space-efficient through-hole layouts.
• Specified ripple endurance — Rated ripple current values at 120 Hz and 10 kHz allow designers to assess AC stress limits directly from the datasheet specs.
• RoHS-compliant component — Meets environmental directive requirements for lead-free assembly needs.

Why Choose UKL1H4R7MDD?

UKL1H4R7MDD provides a focused combination of low leakage, low dissipation factor, and compact radial-lead packaging tailored for audio applications that require controlled AC behavior and small board footprint. Its endurance rating (2000 h at 85°C) and clear ripple current specifications help engineers quantify lifetime and AC stress for design validation.

This Nichicon UKL series part is appropriate for engineers and procurement teams sourcing a defined, small-format polarized electrolytic for legacy or replacement audio designs where the specified electrical and mechanical characteristics match project requirements.

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