UCY2W390MHD3

The UCY2W390MHD3 is a miniature, high-reliability aluminum electrolytic capacitor from Nichicon’s UCY series. It is a radial-lead, polarized device rated 39 µF at 450 V, optimized for high-voltage filtering and energy-storage duties in compact assemblies.

Designed for applications that demand long operating life and robust ripple handling, this part combines a 10,000-hour endurance at 105°C with high ripple-current capability and AEC-Q200 qualification for demanding environments.

Key Features

• Electrical — Capacitance & Voltage: 39 µF nominal capacitance with tolerance −20% to +20%, rated for 450 V DC.
• High-frequency and low-frequency ripple handling: Rated ripple current of 440 mA at 120 Hz and 880 mA at 100 kHz for improved smoothing in both low- and high-frequency power stages.
• Loss characteristics: tanδ (DF) 0.24 measured at 20°C, 120 Hz, enabling predictable dissipation behavior under specified conditions.
• Leakage current: Specified leakage current 802 µA, measured per product conditions.
• Reliability & lifetime: Endurance rated for 10,000 hours at 105°C; suitable for long-term operation under rated conditions.
• Mechanical & mounting: Radial-lead can package with dimensions φ18 × 20 mm and lead spacing 7.5 mm (±0.5 mm), supporting through-hole assemblies and bulk or bag packing.
• Environmental & qualification: RoHS compliant and AEC-Q200 qualified; produced in mass-production status as part of the UCY series.
• Operating range: Specified operating temperature range −40°C to +105°C, matching elevated-temperature requirements.

Typical Applications

• Power supply filtering: Bulk and high-voltage smoothing in compact DC power supplies where 450 V rating and high ripple capacity are required.
• Ballasts and lamp drivers: High-voltage energy storage and ripple suppression for ballast circuitry benefiting from the UCY series’ high ripple current and long life.
• Automotive power electronics: Energy storage and filtering in automotive systems, supported by AEC-Q200 qualification and an operating range down to −40°C.
• Industrial converters and inverters: DC link and smoothing in industrial power modules where long endurance at elevated temperature is important.

Unique Advantages

• High ripple-current capability: Dual ratings (440 mA at 120 Hz and 880 mA at 100 kHz) allow the same capacitor to address both low- and high-frequency ripple sources.
• Long operating life at elevated temperature: 10,000-hour endurance at 105°C supports designs that require extended reliability in thermal stress conditions.
• Automotive-grade qualification: AEC-Q200 qualification provides a verifiable basis for use in automotive and other demanding applications.
• Compact radial-lead form factor: φ18 × 20 mm can-style package with 7.5 mm lead spacing fits space-constrained through-hole assemblies while maintaining high-voltage capability.
• Predictable electrical behavior: Specified tanδ and leakage current values at defined test conditions enable easier thermal and leak-current budgeting in designs.
• Regulatory compliance: RoHS compliance supports environmental requirements for modern electronic products.

Why Choose UCY2W390MHD3?

The UCY2W390MHD3 is positioned for engineers who need a compact, high-voltage electrolytic capacitor with proven endurance and strong ripple-current performance. Its 450 V rating, measured loss tangent, defined leakage current, and 10,000-hour life at 105°C make it suitable for demanding power-filtering and energy-storage roles where longevity and predictable behavior matter.

As part of Nichicon’s UCY series and offered in mass-production status with AEC-Q200 qualification and RoHS compliance, this capacitor is a reliable choice for automotive, industrial, and power-supply designs that require robust performance in a radial-lead can package.

If you would like pricing, availability, or a formal quote for UCY2W390MHD3, please submit a quote request or contact our sales channel for more information and lead-time details.