UPS2A331MHD

The UPS2A331MHD is a miniature, radial‑lead aluminum electrolytic capacitor designed for general‑purpose use and specifically targeted at switching power supply applications. It combines 330 µF capacitance with a 100 V rated voltage and a low impedance characteristic to support bulk energy storage and ripple suppression in compact assemblies.

Built for a wide operating temperature range (–55 °C to 105 °C) and long endurance (3,000 hours at 105 °C under rated conditions), this capacitor is suited for electronic power modules where stable capacitance, controlled loss, and through‑hole mounting are required.

Key Features

• Capacitance & Voltage — 330 µF capacitance at a 100 V rated voltage for higher‑voltage power rails.
• Low Impedance — Rated impedance of 90 mΩ to reduce voltage ripple and improve transient response in power circuits.
• Wide Temperature Range — Specified for –55 °C to 105 °C, enabling operation across demanding thermal environments.
• Endurance — Lifetime of 3,000 hours at 105 °C with DC bias plus rated ripple current applied, supporting reliable long‑term operation.
• Ripple Current Capability — Rated ripple currents of 766.8 mA at 120 Hz and 1.08 A at 10 kHz for effective AC stress handling in switching supplies.
• Through‑Hole Radial Lead Package — Radial, can‑style package with 7.5 mm lead spacing for PCB through‑hole mounting and mechanical robustness.
• Compact Footprint — Physical dimensions L: 25 mm × D: 16 mm with seated height 25 mm, enabling use in space‑constrained designs.
• Polarized Design & Tolerance — Polar capacitor with ±20% capacitance tolerance suitable for bulk filtering and energy storage roles.
• RoHS Compliant — Meets RoHS directive requirements (2011/65/EU, (EU)2015/863).
• Leakage Current Specification (Series) — Series specification: leakage current after 1 minute at 20 °C not more than 0.03CV (µA), supporting predictable standby behavior.

Typical Applications

• Switching Power Supplies — Bulk smoothing and output filtering to reduce ripple and stabilize DC rails in SMPS topologies.
• Power Conversion Modules — Energy storage and decoupling in DC–DC converters and power modules where higher voltage and low ESR are required.
• General‑Purpose Electronics — Circuit-level bulk capacitance and transient support in consumer and industrial equipment labeled for general purpose use.

Unique Advantages

• High Voltage Capability: 100 V rating enables use on elevated DC rails without series stacking.
• Low ESR/Impedance: 90 mΩ impedance supports lower ripple voltage and improved converter stability.
• Compact Through‑Hole Format: Radial can with 7.5 mm lead spacing provides a small footprint for space‑limited boards while retaining robust mechanical mounting.
• Wide Thermal Endurance: –55 °C to 105 °C operation and 3,000‑hour endurance at 105 °C provide predictable performance in thermally stressed environments.
• Predictable Ripple Handling: Specified ripple current values at 120 Hz and 10 kHz help designers size thermal and lifetime margins for switching applications.
• Regulatory Compliance: RoHS compliance supports integration into designs targeting restricted‑substance requirements.

Why Choose UPS2A331MHD?

UPS2A331MHD is positioned for engineers seeking a compact, through‑hole aluminum electrolytic capacitor that balances high voltage capability with low impedance and robust thermal endurance. Its specification set—330 µF at 100 V, 90 mΩ impedance, defined ripple current ratings, and a –55 °C to 105 °C operating range—makes it suitable for power conversion and general‑purpose filtering in constrained PCB layouts.

Manufactured by Nichicon and compliant with RoHS, this capacitor offers a verifiable performance profile and predictable lifetime characteristics for designs where stable bulk capacitance, ripple suppression, and reliable operation at elevated temperature are required.

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