UFW2A3R3MDD

The UFW2A3R3MDD is a miniature aluminum electrolytic capacitor from Nichicon's UFW series designed for audio equipment. It is a polarized, radial-lead can offering 3.3 µF capacitance at a 100 V rating in a compact package.

Targeted at audio applications, the part combines a small footprint (L: 1.1 × D: 0.5 cm) and measurable ripple performance across low and high frequencies, with an operating temperature range of -40 °C to 85 °C and a rated endurance of 2000 hours at 85 °C.

Key Features

• Capacitance & Tolerance — 3.3 µF capacitance with ±20% tolerance (−20% ~ 20%).
• Rated Voltage — 100 V DC rating for applications requiring higher voltage headroom in a small capacitor.
• Package & Mounting — Radial can package with radial lead mounting and 2 mm lead spacing for through‑hole PCB assemblies.
• Compact Dimensions — Small size: length 1.1 cm and diameter 0.5 cm; maximum seated height 1.1 cm for space-constrained designs.
• Temperature & Endurance — Operating range −40 °C to +85 °C with endurance specified as 2000 hours at 85 °C under rated voltage.
• Ripple Current Ratings — Specified ripple current: 40 mA at 120 Hz and 80 mA at 10 kHz, suitable for varied audio-frequency and higher-frequency ripple environments.
• Loss and Leakage Characteristics — Tangent of loss angle (tan δ) specified (max. 0.08 at 100 V, measured at 120 Hz, 20 °C); leakage current limits defined as 0.03 CV (µA) after 1 minute and 0.01 CV (µA) after 2 minutes at 20 °C.
• Polarized Construction — Polarized electrolytic design for correct polarity applications in audio circuits.

Typical Applications

• Audio Equipment — Designed for use in audio devices where compact, polarized electrolytic capacitance and defined ripple performance are required.
• Compact Power Filtering — Small radial can form factor and 100 V rating enable placement in tight PCBs for local decoupling and smoothing in audio power sections.
• PCB Through‑Hole Designs — Radial lead configuration and 2 mm lead spacing simplify placement in traditional through‑hole assembly workflows.

Unique Advantages

• High Voltage in a Small Footprint: 100 V rating combined with 3.3 µF capacitance delivers high-voltage capability without a large can size.
• Audio‑Focused Series: UFW series designation and explicit “for audio equipment” positioning align the part with audio design requirements.
• Measurable Ripple Performance: Specified ripple currents at 120 Hz and 10 kHz (40 mA and 80 mA) help designers size capacitors for both low- and high-frequency ripple conditions.
• Qualified Endurance Window: 2000 hours at 85 °C under rated voltage provides a defined lifetime metric for thermal and operational planning.
• Low‑Temperature Operation: Rated to operate down to −40 °C, enabling use across a broad ambient range documented in the datasheet.
• Documented Loss and Leakage: tan δ and leakage current limits are specified in the datasheet for predictable AC loss and DC leakage behavior.

Why Choose UFW2A3R3MDD?

UFW2A3R3MDD is positioned for designers seeking a compact, polarized aluminum electrolytic capacitor tailored to audio equipment and space‑restricted through‑hole layouts. Its combination of 3.3 µF capacitance, 100 V rating, measured ripple current values, and documented endurance and temperature limits make it suitable for applications where predictable electrical behavior and a small can footprint are important.

This part is appropriate for engineers and procurement teams specifying components for audio electronics, compact power filtering, and PCB through‑hole assemblies where series-level audio focus and defined datasheet metrics are required for design confidence.

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