UFW1A331MED

The UFW1A331MED is an aluminum electrolytic capacitor from Nichicon's UFW series, designed for audio equipment and related electronics. It is a radial-lead, polarized capacitor specified at 330 µF and 10 V, offering endurance characteristics and defined ripple-handling for audio-focused power and signal applications.

Key electrical characteristics include a measured tanδ of 0.24 at 20°C and 120 Hz, leakage current of 99 µA, and specified ripple currents of 270 mA (120 Hz) and 405 mA (10 kHz). Note: this part is listed as End Of Life.

Key Features

• Capacitance and Voltage — 330 µF nominal capacitance with a 10 V rated voltage and ±20% tolerance to support decoupling and smoothing in low-voltage audio circuits.
• Loss and Leakage — tanδ = 0.24 (20°C, 120 Hz) for predictable AC loss behavior and leakage current of 99 µA for stable bias performance.
• Ripple Current Capability — 270 mA low-frequency ripple current at 120 Hz and 405 mA high-frequency ripple current at 10 kHz to handle both power-supply ripple and higher-frequency audio switching components.
• Endurance and Temperature Range — Rated for 2000 hours at 85°C and an operating temperature range of −40°C to +85°C, enabling reliable operation in many audio equipment environments.
• Radial Lead, Through-Hole Package — φ6.3 × 11 mm can with 2.5 mm lead spacing and radial lead mounting for straightforward through-hole assembly and replacement in board-level audio designs.
• Packaging — Supplied in bulk (no terminal forming) / bag packing for volume assembly or manual placement workflows.

Typical Applications

• Audio Equipment — Used for power filtering, decoupling and smoothing in amplifiers, preamplifiers, and audio signal paths where stable capacitance and defined ripple handling are required.
• Low-Voltage Power Supply Filtering — Provides bulk capacitance and ripple suppression for 10 V class supply rails in consumer and professional audio electronics.
• Through-Hole Retrofits & Repairs — Radial-lead format and standard case size support board-level replacements and field-service repairs in legacy audio devices.

Unique Advantages

• Audio-focused specification: Part of Nichicon's UFW series, explicitly intended for audio equipment, aligning electrical characteristics with audio design requirements.
• Defined AC loss figure: A measured tanδ of 0.24 at 20°C/120 Hz helps designers predict frequency-dependent behavior in audio circuits.
• Dual-frequency ripple capability: Rated ripple currents at both 120 Hz and 10 kHz support suppression of low-frequency power ripple and higher-frequency switching noise.
• Long endurance at elevated temperature: 2000 hours at 85°C provides a clear lifetime expectation for thermal-stressed installations.
• Through-hole simplicity: Radial lead and 2.5 mm lead spacing enable straightforward insertion and soldering for prototyping, repair, and through-hole production lines.

Why Choose UFW1A331MED?

UFW1A331MED delivers a combination of capacitance, defined loss characteristics, and ripple-handling tailored to audio equipment and low-voltage power applications. Its radial-lead, φ6.3 × 11 mm package and 2.5 mm lead spacing make it suitable for through-hole designs and board-level repairs where proven electrolytic performance is required.

From a reliability standpoint, the 2000-hour endurance rating at 85°C and specified leakage and ripple values let designers plan for predictable service life and noise suppression in audio-focused systems. As a Nichicon UFW-series part, it aligns with series-level specifications intended for audio applications.

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