UCY2G390MHD

The UCY2G390MHD from Nichicon is a miniature, high-reliability aluminum electrolytic capacitor in a radial lead can package. It delivers 39 µF capacitance at a 400 V rating with a compact φ12.5 × 30.5 mm body and 5.0 mm lead spacing for through‑hole power designs.

Designed for demanding power applications, this capacitor combines high ripple capability and long operational life (12,000 hours at 105°C) with AEC‑Q200 qualification and RoHS compliance, making it suitable for automotive systems, power supplies and ballast applications where durability and stable performance are required.

Key Features

• Capacitance & Voltage: 39 µF nominal capacitance with rated voltage of 400 V and capacitance tolerance of −20% to +20%.
• High ripple current capability: Low-frequency ripple current 465 mA at 120 Hz and high-frequency ripple current 930 mA at 100 kHz (frequency coefficients apply).
• Long life and endurance: Rated for 12,000 hours at 105°C under DC bias plus rated ripple current (10000 hours for certain sizes); endurance specifications include capacitance change within ±20% and leakage current within initial limits after test.
• Loss characteristics: Tangent of loss angle (tan δ) max. 0.24 measured at 20°C, 120 Hz for the 400 V rating.
• Leakage current: Specified leakage current example shown in product data is 724 µA (measurement conditions noted in datasheet).
• Operating temperature range: −40°C to +105°C for sustained operation.
• Radial lead package: φ12.5 mm diameter, length 30.5 mm, lead spacing 5.0 mm (tolerance ±0.5 mm), radial can with bulk or bag packing options.
• Compliance & qualification: AEC‑Q200 rated and RoHS compliant as provided in the product data.

Typical Applications

• Automotive systems: On‑board power filtering and bulk energy storage where AEC‑Q200 qualification and long life at elevated temperature are required.
• Power supplies: Bulk smoothing and ripple suppression in industrial and commercial DC power supply designs.
• Ballasts and lighting power electronics: AC/DC conversion and ripple management in ballast circuitry, as noted in the product series information.

Unique Advantages

• High ripple-handling capability: Specified ripple currents of 465 mA (120 Hz) and 930 mA (100 kHz) allow reliable performance under AC and switching loads.
• Extended high-temperature life: 12,000-hour endurance at 105°C supports long-term reliability in thermally demanding environments.
• AEC‑Q200 qualification: Provides an added level of quality and qualification suitable for automotive applications as indicated in the product data.
• Compact radial-can form factor: φ12.5 × 30.5 mm footprint with 5.0 mm lead spacing offers a space-efficient through‑hole solution for power designs.
• Measured electrical stability: Low tan δ (0.24 at 20°C, 120 Hz) and defined leakage current parameters support predictable behavior in filtering and energy‑storage roles.
• Regulatory compliance: RoHS compliant to the referenced directives, simplifying environmental compliance for OEM designs.

Why Choose UCY2G390MHD?

UCY2G390MHD is positioned for engineers needing a compact, high‑reliability electrolytic capacitor that combines high voltage (400 V), solid ripple capacity, and extended life at elevated temperature. Its radial lead can package and clearly specified electrical characteristics make it straightforward to integrate into through‑hole power assemblies.

This part is suited to designs where predictable endurance, AEC‑Q200 qualification and compliance are important—such as automotive power subsystems, power supplies and ballast electronics—offering a balance of performance, footprint and long-term stability backed by Nichicon series specifications.

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