UHW1A331MED

The UHW1A331MED is a miniature, high-reliability aluminum electrolytic capacitor from Nichicon's UHW series. It is a radial-lead, polarized capacitor specified at 330 µF and 10 V, optimized for compact designs that require elevated ripple handling and long operational life.

Designed for general-purpose electronic designs, the UHW1A331MED combines low high-frequency impedance characteristics with a small φ6.3 × 11 mm can size and a wide operating temperature range of −40°C to 105°C, supporting demanding thermal and ripple conditions.

Key Features

• Capacitance & Rated Voltage: 330 µF nominal capacitance with a rated voltage of 10 V and capacitance tolerance of −20% to +20%.
• Miniature Radial Package: φ6.3 × 11 mm can, radial lead mounting with 2.5 mm lead spacing (±0.5 mm tolerance), suitable for space-constrained board layouts.
• High Ripple Current Handling: Low-frequency ripple current 350 mA at 120 Hz and high-frequency ripple current 700 mA at 10 kHz, backed by UHW series frequency characteristics for reduced impedance at higher frequencies.
• Long Endurance: Rated endurance of 7000 hours at 105°C for extended reliability in elevated-temperature applications.
• Electrical Losses: Tangent of loss angle (tanδ) of 0.18 measured at 20°C and 120 Hz, supporting predictable AC performance.
• Low Leakage: Specified leakage current of 33 µA.
• Wide Operating Range: Operational from −40°C to 105°C, enabling use across varied thermal environments.
• Regulatory Compliance: RoHS compliant as specified for the UHW series.

Typical Applications

• General Purpose Electronics: Serves as a compact polarized capacitor option where a 330 µF, 10 V component is needed.
• Compact Power Modules: Provides ripple absorption and energy storage in space-limited DC power assemblies, leveraging 350 mA (120 Hz) and 700 mA (10 kHz) ripple ratings.
• High-Temperature or Continuous-Load Boards: Suitable for designs requiring continuous operation at elevated temperatures thanks to a 7000-hour rating at 105°C.

Unique Advantages

• Miniature footprint with substantive capacitance: 330 µF in a φ6.3 × 11 mm can allows designers to maintain capacitance without increasing board area.
• High ripple capability across frequencies: Specified ripple currents at both 120 Hz and 10 kHz enable effective performance in both low- and high-frequency power environments.
• Predictable AC characteristics: tanδ specified at 0.18 (20°C, 120 Hz) supports accurate loss budgeting and thermal planning.
• Durable under elevated temperature: 7000-hour endurance at 105°C supports reliability in continuously loaded, warm environments.
• Radial-lead mounting for straightforward assembly: Standard radial leads with 2.5 mm spacing simplify through-hole placement and hand or wave assembly processes.
• RoHS compliance: Meets RoHS directive requirements as indicated for the UHW series.

Why Choose UHW1A331MED?

UHW1A331MED positions itself as a compact, high-reliability aluminum electrolytic solution for designs that demand meaningful capacitance, elevated ripple handling, and long-term operation at elevated temperatures. Its combination of 330 µF/10 V rating, low impedance behavior at higher frequencies, and a 7000-hour endurance at 105°C make it a practical choice for engineers balancing board space, thermal stress, and ripple performance.

This part is well suited to engineers and procurement teams looking for a small-form-factor electrolytic capacitor with verified ripple specs, clear electrical loss characteristics, and RoHS compliance for general-purpose electronic and power module designs.

If you would like pricing, availability, or a formal quote for UHW1A331MED, please request a quote or contact the supplier's sales channel to discuss your project requirements and lead-time options.