UKW2A4R7MDD

The UKW2A4R7MDD is a miniature radial-lead aluminum electrolytic capacitor from Nichicon’s UKW series designed for audio equipment and AV applications. It combines a 4.7 µF capacitance with a 100 V rated voltage in a compact φ5×11 mm can, delivering low loss and controlled leakage for analog audio circuits.

Built for long-term operation in moderate temperature environments, this polarized capacitor supports an operating range of −40°C to +85°C and a rated endurance of 2000 hours at 85°C. Status: End Of Life.

Key Features

• Capacitance & Voltage — 4.7 µF nominal capacitance with a 100 V rated voltage and ±20% tolerance, suitable where moderate capacitance and high working voltage are required.
• Audio-Optimized Performance — Low loss tangent (tanδ = 0.08 at 20°C, 120 Hz) and low leakage current (14.1 µA) to help preserve signal integrity in audio paths.
• Ripple Handling — Specified ripple currents of 45 mA at low frequency (120 Hz) and 90 mA at high frequency to address supply decoupling and bypass needs in audio circuits.
• Compact Radial Package — Miniature can size φ5×11 mm (0.5 × 1.1 cm) with 2.0 mm lead spacing (±0.5 mm) for through-hole mounting in densely packed PCBs.
• Reliability — Endurance rated to 2000 hours at 85°C; leakage and tanδ meet UKW series endurance criteria after test conditions.
• Environmental Compliance — RoHS compliant, supplied in bulk or bag packing.

Typical Applications

• AV equipment — Used in analogue signal paths and decoupling networks where compact, audio-oriented electrolytic capacitors are required.
• Audio circuitry — Suitable for coupling/decoupling, bypass, and filtering roles in consumer and professional audio electronics that require low tanδ and controlled leakage.
• Compact PCB layouts — Radial lead format and small can diameter make this part suitable for space-constrained through-hole designs in audio assemblies.

Unique Advantages

• Audio-focused dielectric development — Part of the UKW series engineered for a harmonious balance of sound quality through a specially developed electrolyte, supporting clearer analog performance.
• High voltage margin in a small footprint — 100 V rating enables use in circuits requiring elevated working voltage while keeping board space low with a φ5×11 mm can.
• Measured low loss and leakage — tanδ = 0.08 (20°C, 120 Hz) and 14.1 µA leakage provide predictable behavior in signal-critical audio paths.
• Defined ripple capabilities — Specified ripple current values for both low and high frequency help designers match decoupling performance to application needs.
• Through-hole robustness — Radial lead package and 2.0 mm lead spacing simplify assembly and provide mechanical reliability for serviceable audio equipment.

Why Choose UKW2A4R7MDD?

The UKW2A4R7MDD positions itself as a compact, audio-oriented electrolytic capacitor for designers needing a combination of 4.7 µF capacitance, 100 V rating, and low-loss characteristics in a radial through-hole package. Its low tanδ and controlled leakage make it a practical choice for analog audio circuits and AV equipment that prioritize signal quality and predictable electrical behavior.

With a rated operating range of −40°C to +85°C and a 2000-hour endurance at 85°C, the part is suited to moderate-temperature, long-life audio applications where a small form factor and through-hole mounting are required. RoHS compliance and standard bulk/bag packing support common production and compliance needs.

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