UCY2D391MHD9

The UCY2D391MHD9 is a miniature-sized aluminum electrolytic capacitor in a radial can package, offering polarized bulk capacitance for through-hole assemblies. It is part of Nichicon's UCY series and is designed for circuits that require high ripple-current handling and extended operational life.

Targeted use cases include power supply and ballast applications as well as automotive electronics where AEC-Q200 qualification, long life at elevated temperature, and RoHS compliance are required. Key value propositions are high ripple current capability, 12000-hour endurance at +105°C, and a compact radial footprint for board-level integration.

Key Features

• Core Type — Aluminum electrolytic capacitor, polarized, radial-lead can for through-hole mounting.
• Capacitance & Voltage — 390 µF rated capacitance at 200 V with tolerance ±20% (‑20% to +20%).
• High Ripple Current Performance — Rated ripple current of 1.69 A at 120 Hz and 3.38 A at 100 kHz, suited to high-ripple circuits.
• Long Life and Endurance — Designed to withstand 12000 hours of DC bias plus rated ripple current at +105°C, meeting the UCY series endurance specification.
• Temperature Range — Operating range from −40°C to +105°C for elevated-temperature environments.
• Automotive-Grade Qualification and Compliance — AEC-Q200 qualified and RoHS compliant (2011/65/EU, (EU) 2015/863).
• Package & Mechanical — Radial lead mounting with lead spacing of 7.5 mm and compact dimensions (L: 3.55 × D: 1.8 cm), available in a radial can package.

Typical Applications

• Power Supplies — Bulk and smoothing capacitor for high-ripple DC bus and power conversion stages where sustained ripple capability is required.
• Ballasts — Suitable for ballast applications that demand high ripple handling and long-term stability at elevated temperatures.
• Automotive Electronics — Designed for automotive modules requiring AEC-Q200 qualification and long life under thermal and ripple stress.

Unique Advantages

• High ripple-current capability: Specific ripple ratings (1.69 A at 120 Hz; 3.38 A at 100 kHz) enable reliable performance in demanding power circuits.
• Extended operational life at +105°C: 12000-hour endurance under rated conditions reduces replacement frequency and supports long-term designs.
• AEC-Q200 qualification: Explicit qualification for applications requiring automotive-grade reliability.
• Compact radial-can footprint: Small physical size (L: 3.55 × D: 1.8 cm) and 7.5 mm lead spacing simplify through-hole board layout in space-constrained designs.
• Wide temperature tolerance: −40°C to +105°C operating range supports use across varied environmental conditions.
• RoHS compliance: Conforms to RoHS directives (2011/65/EU, (EU) 2015/863) for environmental regulatory alignment.

Why Choose UCY2D391MHD9?

Nichicon's UCY2D391MHD9 pairs a compact radial-can footprint with high ripple-current capability and long-term endurance at +105°C, making it a practical choice for designers of power supplies, ballasts, and automotive electronic systems. Its polarization, specified capacitance of 390 µF at 200 V, and precise ripple ratings allow straightforward integration into high-stress power circuits.

With AEC-Q200 qualification and RoHS compliance, the UCY2D391MHD9 provides a balance of reliability, regulatory alignment, and space-efficient packaging for engineers specifying components for robust, long-life designs.

If you need pricing, availability, or samples for evaluation, request a quote or contact sales to discuss lead times and ordering options.