UCY2H390MHD

The UCY2H390MHD is a miniature aluminum electrolytic capacitor in a radial-can package designed for high ripple current and long-term reliability. It belongs to Nichicon’s UCY series and is intended for power supply and ballast applications, with qualification for automotive use via AEC-Q200.

With a 39 µF capacitance at 500 V, polarized radial leads, and an operating temperature range of -40 °C to 105 °C, this capacitor targets demanding power-electronics environments that require sustained ripple handling and extended life.

Key Features

• Capacitance & Tolerance: 39 µF nominal capacitance with ±20% tolerance, specified at 120 Hz, 20 °C.
• High Voltage Rating: Rated for 500 V operation for high-voltage power applications.
• High Ripple Current: Specified ripple current of 380 mA at 120 Hz and 760 mA at 100 kHz, enabling effective ripple filtering across low and high frequencies.
• Long Life & Temperature Endurance: Designed for 10,000 hours at +105 °C, with an operating range from -40 °C to +105 °C to support extended-duty thermal environments.
• AEC-Q200 Qualified & RoHS Compliant: AEC-Q200 qualification for automotive-grade reliability and compliance with RoHS directives (2011/65/EU, (EU) 2015/863).
• Radial Can Package: Compact radial, can-style package with 7.5 mm lead spacing and polarized radial lead mounting for through-hole assemblies.
• Compact Dimensions: Physical size approximately L: 3.55 × D: 1.6 cm for space-conscious board layouts.

Typical Applications

• Power Supplies: Bulk filtering and smoothing in high-voltage power supplies where 500 V rating and high ripple current capacity are required.
• Ballasts and Lighting Drivers: Energy-storage and ripple-handling in ballast and lighting driver circuits, leveraging the capacitor’s high ripple capability and long life.
• Automotive Power Electronics: Use in automotive power modules and subsystems that benefit from AEC-Q200 qualification and elevated temperature endurance.

Unique Advantages

• High ripple-current capability: Measured ripple currents at both 120 Hz and 100 kHz reduce stress and heating in power circuits across frequency ranges.
• Extended operational life at elevated temperature: Rated for 10,000 hours at +105 °C, supporting designs that require durability under continuous thermal load.
• Automotive-grade qualification: AEC-Q200 qualification signals suitability for automotive system integration where reliability standards are enforced.
• Compact radial form factor: Small can-style package with 7.5 mm lead spacing provides a balance of density and ease of through-hole assembly.
• Regulatory compliance: RoHS compliance ensures suitability for applications requiring restricted-substance adherence.

Why Choose UCY2H390MHD?

UCY2H390MHD combines a high 500 V rating with a compact 39 µF capacitance and demonstrated high ripple-current capability to meet the needs of power supplies, ballasts, and automotive power electronics. Its 10,000-hour endurance at +105 °C and AEC-Q200 qualification make it a reliable choice for designs that demand long life and robust thermal performance.

As part of Nichicon’s UCY series, this capacitor is suited to engineers specifying components for high-voltage, high-ripple applications where proven reliability and regulatory compliance are essential to system stability and lifecycle planning.

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