UES1A331MPM

The UES1A331MPM is a bi‑polar aluminum electrolytic capacitor from Nichicon’s MUSE acoustic series, engineered for audio signal circuits. It provides 330 µF capacitance at a 10 V rating in a radial‑lead, can‑style package and is RoHS compliant.

Designed for audio applications, this capacitor combines the bi‑polar construction needed for AC signal paths with a specification set focused on signal stability and defined life performance across the component’s operating range.

Key Features

• Bi‑polar MUSE acoustic design — Purpose‑built for audio signal circuits to support AC‑coupled applications where polarity inversion can occur.
• Capacitance & voltage — 330 µF nominal capacitance with a 10 V rated voltage and ±20% tolerance, suitable for common audio coupling and decoupling tasks.
• Package and mounting — Radial lead, can‑style package with lead spacing of 5 mm for through‑hole mounting and simple PCB integration; physical size: D = 1 cm, L = 2 cm.
• Temperature range — Rated for operation from −40 °C to +85 °C, supporting typical environmental conditions encountered in consumer and professional audio equipment.
• Endurance — Rated lifetime of 1000 hours at 85 °C; endurance testing includes polarity inversion every 250 hours (per series specification), providing a defined long‑term performance metric.
• Leakage current — Leakage current specified as not more than 0.03CV (µA) after one minute’s application of rated voltage at 20 °C (series specification), enabling predictable bias behavior in signal circuits.
• RoHS compliance — Conforms to RoHS directives (2011/65/EU, (EU)2015/863).
• Low‑temperature stability — Impedance stability characterized for low temperatures with typical ratios Z(−25 °C)/Z(+20 °C) = 2 and Z(−40 °C)/Z(+20 °C) = 4 (series specification).

Typical Applications

• Audio signal coupling and decoupling — AC coupling caps in signal paths where bi‑polar behavior removes polarity constraints on audio lines.
• Preamplifiers and headphone amplifiers — Use in front‑end signal circuits where stable capacitance and low leakage support audio fidelity.
• Mixing consoles and studio equipment — Signal path and filter applications in professional audio assemblies that require defined endurance at elevated temperatures.
• Consumer audio electronics — Integration into analog audio circuitry where RoHS compliance and compact radial can packaging are required.

Unique Advantages

• Bi‑polar construction for AC signals: Allows use in audio signal circuits without polarity limitations, simplifying design for AC‑coupled stages.
• Audio‑focused series: MUSE acoustic series positioning aligns the component’s characteristics with the needs of audio signal integrity.
• Defined endurance specification: 1000 hours at 85 °C with polarity inversion provides a measurable reliability baseline for thermal stress planning.
• Predictable leakage behavior: Leakage current defined by 0.03CV after one minute at 20 °C supports consistent biasing in amplifier and filter designs.
• Compact radial can package: Through‑hole radial lead format with 5 mm lead spacing enables straightforward PCB assembly and replacement in legacy and new designs.
• RoHS compliant: Meets relevant RoHS directives for environmentally restricted substance requirements.

Why Choose UES1A331MPM?

UES1A331MPM is positioned for designers and engineers building audio signal chains who need a bi‑polar electrolytic capacitor with clear, application‑oriented specifications. Its 330 µF/10 V rating, MUSE acoustic series design, and radial can packaging make it appropriate for coupling, decoupling, and filtering tasks in both professional and consumer audio equipment.

With a defined operating temperature range, a 1000‑hour endurance rating at 85 °C, and RoHS compliance, UES1A331MPM offers a predictable performance profile and environmental conformity for product designs that require stable audio performance over time.

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