UEP1E331MHD

The UEP1E331MHD is a bi‑polarized aluminum electrolytic capacitor from Nichicon's UEP series, designed for general‑purpose electronic applications that require wide operating temperatures and reliable long‑term performance. It is a radial‑lead, can‑style capacitor rated at 330 µF and 25 V, manufactured for mass production with RoHS compliance.

Key value propositions include a wide temperature range of −55 °C to +105 °C, a 1000‑hour endurance rating at 105 °C with polarity inversion, and compact radial packaging (φ12.5 × 20 mm) with 5 mm lead spacing for through‑hole board designs.

Key Features

• Bi‑Polar Design  Bi‑polarized construction suitable for circuits where polarity can reverse; endurance testing performed with polarity inversion every 250 hours during rated life.
• Capacitance & Voltage  330 µF nominal capacitance at a rated voltage of 25 V with a tolerance of ±20% (120 Hz, 20 °C).
• Wide Temperature Range  Specified for operation from −55 °C to +105 °C to support applications exposed to wide ambient variations.
• Endurance & Reliability  Rated for 1000 hours at 105 °C; after the endurance test the capacitance change remains within ±20% and leakage current stays at or below the initial specified value.
• Loss and Leakage Characteristics  Dissipation factor (tan δ) specified at 0.20 (measurement at 120 Hz, 20 °C) and initial leakage current provided as 247.5 µA.
• Ripple Current Capability  Ripple handling of 320 mA at 120 Hz and 480 mA at 10 kHz for improved performance in AC and varying‑frequency environments.
• Radial Can Package  Compact φ12.5 × 20 mm can with 5 mm lead spacing and radial lead mounting for straightforward through‑hole assembly; supplied in bulk/bag packing.
• RoHS Compliant  Conforms to RoHS directive requirements for environmental compliance.

Typical Applications

• General‑Purpose Electronic Circuits  Suited for general‑purpose assemblies requiring a bi‑polarized electrolytic capacitor across a wide temperature range.
• Through‑Hole Power and Signal Modules  Radial lead package and compact can size fit conventional through‑hole PCBs for power filtering and AC‑coupling where bipolar operation is needed.
• Temperature‑Variable Environments  Designed for systems that operate between −55 °C and +105 °C and require capacitors that maintain performance after extended high‑temperature exposure.

Unique Advantages

• Wide operating temperature span  Ensures functional stability from −55 °C to +105 °C for designs exposed to extreme ambient conditions.
• Bipolar endurance validated  Endurance specification (1000 h at 105 °C with polarity inversion) demonstrates resilience in applications with reversing polarity stress.
• Clear performance specifications  Published tan δ (0.20) and leakage current (247.5 µA) allow straightforward comparison and selection for predictable circuit behavior.
• High ripple tolerance across frequencies  Rated ripple currents at 120 Hz and 10 kHz (320 mA and 480 mA respectively) support applications with both low‑ and high‑frequency ripple components.
• Compact radial can for through‑hole designs  φ12.5 × 20 mm size with 5 mm lead spacing simplifies placement on standard PCBs while conserving board area.
• RoHS compliance  Facilitates use in designs that require lead‑free, environmentally compliant components.

Why Choose UEP1E331MHD?

The UEP1E331MHD combines a bi‑polarized aluminum electrolytic architecture with a wide −55 °C to +105 °C operating range and a 1000‑hour high‑temperature endurance rating, delivering predictable electrical behavior for general‑purpose circuits that encounter temperature extremes or reversing polarity. Its specified tan δ, leakage current, and ripple current ratings provide engineers with verifiable parameters for reliable circuit design.

As a mass‑production, RoHS‑compliant offering in Nichicon's UEP series, this part is appropriate for engineers and procurement teams seeking a compact radial, through‑hole capacitor with documented endurance and clear performance metrics for long‑term use.

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