UCY2G390MHD9

The UCY2G390MHD9 from Nichicon is a radial lead aluminum electrolytic capacitor in the UCY series, offering 39 µF capacitance at a 400 V rating. Designed for demanding power applications, it combines high ripple-handling capability with long-term endurance up to 12,000 hours at +105°C.

This polarized, miniature can-style capacitor is intended for use in power supplies, ballast circuits and other high-voltage power electronics, and is specified for harsh temperature ranges from −40°C to +105°C.

Key Features

• Electrical Performance — 39 µF nominal capacitance with tolerance −20% to +20% and tan δ 0.24 (measured at 20°C, 120 Hz) for defined loss characteristics.
• High Voltage Rating — Rated voltage 400 V suitable for high-voltage power rail decoupling and smoothing.
• Ripple Current Capability — Low-frequency ripple current 385 mA (120 Hz) and high-frequency ripple current 770 mA (100 kHz), enabling robust AC loading in both low- and high-frequency domains.
• Reliability and Life — Endurance rated at 12,000 hours at 105°C under DC bias plus rated ripple current; designed to meet long-life requirements in continuous-power applications.
• AEC-Q200 Qualification — AEC-Q200 rating and RoHS compliance for regulated-environment use and supply-chain requirements.
• Compact Radial Package — Can-style radial lead package with dimensions φ12.5 × 25 mm length and 5.0 mm lead spacing (±0.5 mm), offered in bulk or bag packing for assembly flexibility.
• Leakage Current — Specified leakage current listed as 724 µA; leakage behavior and endurance conform to the UCY series specifications.
• Operating Temperature Range — −40°C to +105°C for operation across broad thermal environments.

Typical Applications

• Power Supplies — Bulk smoothing and output filtering on high-voltage DC rails where 400 V rating and high ripple capability are required.
• Ballast and Lighting Electronics — AC ripple endurance and long life at elevated temperature support ballast circuits and similar power-control applications.
• Automotive Power Electronics — AEC-Q200 qualification and extended temperature range make this capacitor suitable for automotive power modules and subsystems.

Unique Advantages

• High ripple handling at multiple frequencies — Specified ripple currents at 120 Hz and 100 kHz (385 mA and 770 mA respectively) provide predictable performance across low- and high-frequency power domains.
• Long rated life at elevated temperature — 12,000-hour endurance at 105°C under rated conditions supports extended field life in continuously operated equipment.
• Automotive-ready qualification — AEC-Q200 rating delivers a recognized reliability benchmark for regulated automotive and similarly demanding markets.
• Compact radial form factor — φ12.5 × 25 mm can with 5 mm lead spacing minimizes board space while maintaining high-voltage capability.
• RoHS compliant — Meets RoHS directive requirements for regulatory and supply-chain compliance.
• Packaging flexibility — Available in bulk (no terminal forming) or bag packing to suit prototyping and production workflows.

Why Choose UCY2G390MHD9?

The UCY2G390MHD9 is positioned for designs that require a compact, high-voltage electrolytic capacitor with defined ripple capability and extended high-temperature endurance. Its combination of 400 V rating, 39 µF capacitance, and AEC-Q200 qualification addresses reliability and regulatory needs for industrial and automotive power systems.

This part is well suited to engineers specifying long-life smoothing and filtering components in power supplies, ballast circuits, and automotive power modules where predictable ripple performance and elevated-temperature endurance are critical.

If you would like pricing, lead time, or to request a formal quote for UCY2G390MHD9, please contact sales or submit a request to receive a quotation and availability details for your volume and packaging preference.