UCY2E331MHD9

The UCY2E331MHD9 is a radial lead aluminum electrolytic capacitor in Nichicon’s UCY series, optimized for high ripple current and long-term reliability. Packaged in a compact φ18 × 40 mm can with 7.5 mm lead spacing, it is designed for power-dense applications that require robust performance over extended operating life.

Key use cases include automotive power systems and power-supply/ballast circuits where high ripple handling, stable performance across temperature, and qualified reliability are required. The part provides a combination of high rated voltage (250 V), large capacitance (330 µF), and extended endurance at elevated temperature.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance with a rated voltage of 250 V and capacitance tolerance of ±20% (measured at 120 Hz, 20°C).
• High ripple current capability — Rated ripple currents of 1.53 A at 120 Hz and 3.06 A at 100 kHz support high-demand power-filtering applications.
• Long endurance at elevated temperature — Rated for 12,000 hours at 105°C under DC bias plus rated ripple current, supporting extended service life in high-temperature environments.
• Electrical loss characteristics — Low dissipation factor with tan δ 0.20 measured at 120 Hz and 20°C (for 250 V rating).
• Leakage current — Specified leakage current of 3,400 µA for this part number.
• Mechanical and mounting — Radial lead can package (φ18 × 40 mm) with 7.5 mm lead spacing (±0.5 mm); lead diameter 0.8 mm.
• Polarized device — Polarized aluminum electrolytic capacitor for DC applications.
• Automotive-grade qualification — AEC‑Q200 qualified, suitable for applications requiring that qualification.
• Regulatory compliance and packaging — RoHS compliant; available in bulk (no terminal forming) or bag packing. Product is in mass production.

Typical Applications

• Automotive power systems — Suitable for in-vehicle power electronics and modules that require AEC‑Q200 qualification and sustained operation up to 105°C.
• Power supplies and converters — Used for smoothing and filtering in high-voltage DC power supplies where 250 V rating and high ripple current capability are needed.
• Ballasts and lighting drivers — Designed for ballast-type circuits and drivers that demand high ripple endurance and long life.

Unique Advantages

• High ripple current handling: 1.53 A (120 Hz) and 3.06 A (100 kHz) ratings reduce the need for parallel capacitors in high-ripple designs.
• Extended high-temperature life: 12,000 hours at 105°C provides predictable long-term performance in elevated-temperature environments.
• AEC‑Q200 qualification: Provides an established level of qualification for automotive and similarly demanding applications.
• Compact radial-can form factor: φ18 × 40 mm can with 7.5 mm lead spacing fits space-constrained layouts while keeping through-hole mounting simplicity.
• Measured loss and leakage specs: Low tan δ (0.20 at 120 Hz, 20°C) and specified leakage current (3,400 µA) enable reliable design margins for filtering and energy-storage functions.
• Regulatory readiness: RoHS compliance and standard packaging options simplify procurement and assembly planning.

Why Choose UCY2E331MHD9?

UCY2E331MHD9 delivers a balanced combination of high capacitance (330 µF), 250 V rating, and robust ripple-current capability in a compact radial-can package. Its extended endurance at 105°C and AEC‑Q200 qualification make it well suited to demanding power and automotive applications where long-term reliability and thermal resilience are required.

This part is aimed at designers seeking a verified, production-ready electrolytic capacitor for power filtering, ballast, and automotive power subsystems—offering predictable electrical characteristics, regulatory compliance, and options for bulk or bag packing to support manufacturing needs.

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