UCM1K391MNS1MS

The UCM1K391MNS1MS is a chip‑type aluminum electrolytic capacitor designed for surface‑mount assembly with low impedance characteristics. It provides 390 µF capacitance at an 80 V rating and is optimized for applications requiring high capacitance in a compact SMD can (φ16 × 16.5L).

Targeted at automotive and high‑reliability markets, this component combines 80 V voltage rating, high ripple handling, extended endurance at elevated temperature, and AEC‑Q200 qualification to meet demanding operating profiles while supporting automated carrier‑tape mounting.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with ±20% tolerance and an 80 V rated voltage for high‑energy storage in a compact SMD package.
• Low Impedance Performance — Chip‑type, low impedance construction with tan δ (loss tangent) measured at 20°C, 120 Hz; series data lists tan δ max. 0.08 at 80 V.
• Ripple Current & Leakage — Low‑frequency ripple current of 750 mA (120 Hz) and high‑frequency ripple current of 1.5 A (10 kHz); specified leakage current 312 µA.
• High Temperature Endurance — Rated for operation from −55°C to +105°C with endurance of 5000 hours at 105°C under rated voltage conditions.
• Package & Assembly — Surface‑mount radial can (φ16 × 16.5L) with embossed carrier taping for automatic mounting machines; surface mount land size L:1.63 × W:1.63 cm.
• Reliability & Compliance — AEC‑Q200 qualified for automotive use, vibration resistant, and RoHS compliant.

Typical Applications

• Automotive Power Electronics — Bulk capacitance for high‑voltage subsystems where 80 V rating, 390 µF capacity, and elevated‑temperature endurance are required.
• On‑board Power Modules — SMD can package and high ripple current capability (up to 1.5 A at 10 kHz) support power modules and converter modules in vehicle electronics.
• Electronic Control Units (ECUs) — AEC‑Q200 qualification and vibration‑resistant construction suit ECUs and other automotive modules assembled with automated carrier tape processes.

Unique Advantages

• High Capacitance at 80 V: 390 µF provides substantial energy storage for high‑voltage systems without increasing board area significantly.
• Designed for Elevated Temperatures: Rated to −55°C to +105°C with 5000 hours endurance at 105°C, supporting long life in hot operating environments.
• Strong Ripple Handling: 750 mA at 120 Hz and 1.5 A at 10 kHz enable effective filtering and smoothing in both low‑ and high‑frequency power paths.
• Automated Assembly Ready: Embossed carrier taping and surface‑mount can format simplify pick‑and‑place and reflow integration into automated production lines.
• Automotive Reliability: AEC‑Q200 qualification and vibration resistance help meet automotive system reliability requirements.
• Compliance: RoHS compliant for environmental regulatory alignment.

Why Choose UCM1K391MNS1MS?

UCM1K391MNS1MS delivers a combination of high capacitance, elevated voltage rating, and low impedance in a compact surface‑mount can tailored for automotive and high‑reliability assemblies. Its specified ripple currents, controlled leakage, and long endurance at 105°C make it suitable for designs that demand stable bulk energy storage and sustained performance over time.

Backed by Nichicon’s UCM series specifications and AEC‑Q200 qualification, this part is intended for engineers specifying SMD electrolytic capacitors for automated manufacturing and applications where temperature endurance, vibration resistance, and regulatory compliance are important selection criteria.

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