UCD1K331MNQ1MS

The UCD1K331MNQ1MS is a chip-type, low-impedance aluminum electrolytic capacitor designed for surface-mount assembly on high-density PCBs. It delivers 330 µF capacitance at an 80 V rating with polarization suited for power filtering and energy storage in compact SMD form factors.

Targeted for demanding temperature and endurance requirements, this part supports operation from −55 °C to +105 °C and is qualified to AEC-Q200, making it appropriate for automotive and industrial power applications that require reliable, long-life capacitive performance.

Key Features

• Capacitance & Tolerance — 330 µF nominal with ±20% tolerance at 120 Hz, 20 °C, providing defined bulk capacitance for power rail stabilization.
• Voltage Rating — Rated for 80 V operation to support higher-voltage power systems and intermediate rails.
• Low Impedance — Designed as a low-impedance chip type; specified tangent of loss angle (tan δ) of 0.08 at 20 °C, 120 Hz for reduced AC losses.
• Ripple Current Capability — Low-frequency ripple current 396.5 mA (120 Hz) and high-frequency ripple current 793 mA (10 kHz) to handle switching and ripple currents in DC–DC converters and power stages.
• Leakage Current — Specified leakage current of 264 µA after voltage application, enabling predictable quiescent behavior in power systems.
• Endurance & Temperature Range — 5000 hours life at 105 °C and an operating range from −55 °C to +105 °C for extended field reliability.
• Surface-Mount Packaging — φ16 × 16.5 mm can in an SMD configuration with embossed carrier taping for automated pick-and-place assembly; surface-mount land size specified as 1.63 × 1.63 cm.
• Standards & Compliance — AEC-Q200 qualified and RoHS compliant, supporting automotive-grade design requirements and environmental regulations.
• Polarized Construction — Polarized aluminum electrolytic design for bulk energy storage and smoothing on DC rails.

Typical Applications

• Automotive power systems — Bulk smoothing and decoupling on vehicle power rails and intermediate bus voltages where an 80 V rating and AEC-Q200 qualification are required.
• DC–DC converters — Output filtering and ripple absorption for switching regulators, leveraging specified LF and HF ripple current capabilities.
• Infotainment and body electronics — Energy storage and power stabilization on compact, high-density PCBs operating across −55 °C to +105 °C.
• Industrial power modules — SMD-mounted bulk capacitance for power distribution and transient suppression in compact modules.

Unique Advantages

• High-voltage capability: 80 V rating enables use on higher-voltage rails where lower-voltage capacitors are unsuitable.
• Low loss and stable AC performance: tan δ of 0.08 at 120 Hz (20 °C) reduces dissipation and supports efficient filtering.
• Designed for automated assembly: Chip-type SMD construction with embossed carrier taping simplifies high-density board assembly and placement.
• Long endurance at elevated temperature: 5000 h at 105 °C provides extended service life in high-temperature environments.
• Automotive-grade qualification: AEC-Q200 qualification and RoHS compliance support regulated automotive and industrial product development.
• Compact SMD can: φ16 × 16.5 mm package offers substantial capacitance in a space-efficient surface-mount form.

Why Choose UCD1K331MNQ1MS?

UCD1K331MNQ1MS combines high capacitance and an 80 V rating in a compact, low-impedance SMD can that is tailored for automated production and demanding temperature environments. Its specified ripple current performance, low tan δ, and 5000-hour endurance at 105 °C make it well suited to designs that require stable bulk capacitance and dependable lifetime under thermal stress.

This part is positioned for engineers designing automotive and industrial power systems who need verified, automotive-grade electrolytic capacitance in a surface-mount package that integrates into high-density PCBs while meeting regulatory and quality expectations.

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