UCD1K331MNJ1MS

The UCD1K331MNJ1MS is a chip-type, low-impedance aluminum electrolytic capacitor designed for surface-mount applications. It provides 330 µF capacitance at a rated voltage of 80 V and is optimized for high-density PCB assembly with embossed carrier taping for automated pick-and-place.

Built for demanding environments, this part offers a wide operating temperature range of -55°C to 105°C, AEC-Q200 qualification for automotive use, and a 5000-hour endurance rating at 105°C—combining stable filtering performance, high ripple handling, and long-term reliability.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance with a rated voltage of 80 V and tolerance of -20% to +20% (measured at 120 Hz, 20°C).
• Low Impedance Performance — Chip-type construction designed for low impedance; specified tangent of loss angle (tanδ) up to 0.08 at 80 V (measured at 120 Hz, 20°C).
• Ripple Current Capability — Low-frequency ripple current 396.5 mA (120 Hz) and high-frequency ripple current 793 mA (10 kHz) for effective power smoothing and decoupling.
• Leakage Current — Specified leakage current of 264 µA after voltage application at 20°C.
• High-Temperature Endurance — Rated for 5000 hours at 105°C, meeting endurance criteria for long-term thermal stress.
• Robust Temperature Range — Operating temperature from -55°C to 105°C for use across cold-start and elevated-ambient environments.
• Automotive Qualification & Compliance — AEC-Q200 qualified and RoHS compliant for regulated and automotive applications.
• Surface-Mount Packaging — Radial can SMD package (φ16 × 16.5L / dimensions L: 1.65 cm × D: 1.6 cm) with embossed carrier taping for automated assembly; recommended surface-mount land size 1.63 × 1.63 cm.

Typical Applications

• Automotive power electronics — Bulk filtering and smoothing in vehicle electronic control units where an 80 V rating, AEC-Q200 qualification, and high-temperature endurance matter.
• Motor drive and inverter subsystems — DC-link decoupling and ripple absorption leveraging 330 µF capacitance and high ripple-current capability at both low and high frequencies.
• Power conditioning for sensors and actuators — Stabilizing supply rails in harsh temperature environments using long endurance at 105°C and low leakage characteristics.

Unique Advantages

• High-voltage capability: 80 V rating enables use in higher-voltage automotive and industrial domains without series stacking.
• Low impedance and controlled loss: tanδ = 0.08 at 80 V (120 Hz, 20°C) supports efficient filtering with reduced thermal buildup.
• Wide temperature margin and long life: -55°C to 105°C operating range and 5000 h endurance at 105°C increase design robustness and mean time between maintenance.
• Automotive-grade qualification: AEC-Q200 status provides traceable suitability for vehicle electronics and regulated applications.
• Assembly-ready SMD format: Chip-type radial can in embossed carrier tape simplifies automated placement and high-density PCB layout.
• Regulatory compliance: RoHS-compliant construction aligns with environmental requirements.

Why Choose UCD1K331MNJ1MS?

The UCD1K331MNJ1MS combines a high 80 V rating with 330 µF capacitance in a low-impedance, surface-mount chip designed for automated production. Its specified ripple currents at 120 Hz and 10 kHz, low leakage current, and tanδ rating make it suitable for power smoothing and decoupling in thermally demanding environments.

With AEC-Q200 qualification, RoHS compliance, and a 5000-hour endurance at 105°C, this capacitor is positioned for engineers designing automotive and industrial systems that require durable, assembly-friendly components backed by measurable performance specifications.

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