UCY2C391MHD9

The UCY2C391MHD9 is a miniature, high-reliability aluminum electrolytic capacitor in Nichicon’s UCY series. It is a radial-lead, polarized can designed for applications that require high ripple handling, extended life at elevated temperatures, and robust electrical performance.

Targeted for power electronics, lighting ballast and automotive markets, this part delivers 390 µF capacitance at a 160 V rating with high ripple current capability and a rated lifetime of 12,000 hours at 105°C, providing a dependable energy-storage and smoothing solution for demanding designs.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with ±20% tolerance at a rated voltage of 160 V.
• High Ripple Current — Low-frequency ripple current of 1.51 A at 120 Hz and high-frequency ripple current of 3.02 A at 100 kHz to support switching supplies and high-speed converters.
• Long Life / High Temperature Endurance — Rated for 12,000 hours at 105°C under DC bias plus rated ripple current, designed for extended service in elevated-temperature environments.
• Low Loss Characteristics — Dissipation factor (tan δ) of 0.20 measured at 20°C, 120 Hz for efficient operation.
• Leakage Current — Specified leakage current of 2,596 µA (product datum).
• Robust Mechanical Package — Radial lead can with dimensions φ16 × 35.5 mm (L: 3.55 × D: 1.6 cm), lead spacing 7.5 mm (±0.5 mm).
• Automotive-Grade Qualification — AEC-Q200 qualified, suitable for automotive applications; rated temperature range −40°C to +105°C.
• Regulatory Compliance — RoHS compliant; available in bulk (no terminal forming) or bag packing; mass production status.

Typical Applications

• Power Supplies — Bulk filtering and output smoothing in AC/DC and DC/DC supplies where 160 V rating and high ripple current reduce voltage ripple and thermal stress.
• Automotive Power Electronics — Energy storage and decoupling in automotive modules and converters leveraging AEC-Q200 qualification and −40°C to +105°C operating range.
• Lighting Ballasts & LED Drivers — Ripple suppression and energy buffering in ballast and driver circuits, benefiting from the capacitor’s high-frequency ripple capability.
• Industrial Drives — Filtering and transient energy support in motor drives and industrial power control systems operating in elevated temperatures.

Unique Advantages

• High ripple tolerance: Rated ripple currents of 1.51 A (120 Hz) and 3.02 A (100 kHz) help minimize heating in high-stress AC and switching environments.
• Extended high-temperature life: 12,000-hour endurance at 105°C provides predictable aging characteristics for long-term designs.
• Automotive-qualified reliability: AEC-Q200 qualification supports use in regulated automotive designs that require validated component performance.
• Compact, serviceable format: Miniature φ16 can with radial leads and 7.5 mm lead spacing simplifies through-hole assembly and replacement in existing form factors.
• Industry-standard loss characteristics: tan δ = 0.20 at 20°C, 120 Hz gives a measurable baseline for ESR-related thermal design and loss budgeting.

Why Choose UCY2C391MHD9?

UCY2C391MHD9 combines high capacitance density and a 160 V rating with elevated ripple-current capability and long-life endurance at 105°C, making it a practical choice for engineers designing robust power systems. Its radial-lead, miniature can format and AEC-Q200 qualification position it for demanding industrial and automotive applications where predictable performance and regulatory compliance matter.

Manufactured by Nichicon and supplied in mass-production quantities with RoHS compliance, this capacitor offers designers a verifiable, specification-driven option for energy storage, filtering, and ripple management in medium-voltage applications.

Request a quote or contact sales to discuss availability, pricing, and packaging options for UCY2C391MHD9.