UCM1K391MNJ1MS

The UCM1K391MNJ1MS is a chip-type aluminum electrolytic capacitor from Nichicon's UCM series, engineered for surface-mount applications that require low impedance and high-voltage capability. With a rated capacitance of 390 µF at 80 V and an operating temperature range of -55 °C to 105 °C, it targets demanding electronic environments where stable capacitance, ripple handling and long endurance are required.

Designed for automated assembly, the part is supplied in embossed carrier tape and carries AEC‑Q200 qualification and RoHS compliance for regulated applications.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance with an 80 V rated voltage and tolerance of -20% to +20% for robust energy storage and filtering at higher system voltages.
• Low Impedance Construction — Chip-type, low-impedance design for improved performance in smoothing and transient suppression across a range of frequencies.
• Ripple Current Capability — Rated low-frequency ripple current of 750 mA at 120 Hz and high-frequency ripple current of 1.5 A at 10 kHz to support dynamic load conditions.
• Leakage and Dissipation — Leakage current of 312 µA (specified per part) and tan δ (DF) of 0.08 measured at 20 °C, 120 Hz, providing predictable loss characteristics.
• High-Temperature Endurance — 5000 hours rated life at 105 °C with defined limits for capacitance change and dissipation factor after endurance testing.
• Surface-Mount Packaging — Radial can SMD chip format in a φ16 × 16.5 mm package supplied in embossed carrier tape for automated placement (surface mount).
• Industry Compliance — AEC‑Q200 qualified and RoHS compliant for regulated markets and designs requiring recognized component-level qualifications.

Typical Applications

• Automotive Electronics — AEC‑Q200 qualification, 80 V rating and 105 °C endurance support use in vehicle electronic modules that require stable capacitance under elevated temperatures.
• Power Supply Filtering — 390 µF capacitance with defined ripple current ratings provides smoothing and decoupling capability for power rails and converters operating up to 80 V.
• Automated Assembly Lines — Supplied in embossed carrier tape and designed for surface-mount placement, simplifying high-volume PCB assembly processes.

Unique Advantages

• High-voltage, high-capacitance option: 390 µF at 80 V enables compact, higher-voltage energy storage compared to lower-voltage electrolytic options.
• Designed for thermal endurance: Rated for 5000 hours at 105 °C, providing predictable long-term performance in elevated-temperature environments.
• Frequency-flexible ripple handling: Specified ripple currents at both 120 Hz (750 mA) and 10 kHz (1.5 A) give designers clear limits for low- and high-frequency load conditions.
• Predictable electrical parameters: Specified tan δ (0.08 at 20 °C, 120 Hz) and a quantified leakage current (312 µA) support accurate modeling of losses and standby behavior.
• Production-ready packaging: Embossed carrier tape packaging and surface-mount can format simplify pick-and-place integration into automated manufacturing.
• Standards compliance: AEC‑Q200 qualification and RoHS compliance support use in regulated product programs and streamline design approvals.

Why Choose UCM1K391MNJ1MS?

UCM1K391MNJ1MS combines a high 80 V rating and substantial 390 µF capacitance in a chip-type, low-impedance SMD package engineered for automated assembly. Its defined ripple current ratings, low dissipation factor and controlled leakage make it suitable for designs that require stable filtering and energy storage under elevated temperature and continuous operation.

This part is appropriate for designers and manufacturers targeting robust automotive and industrial electronic modules that demand electrical predictability, long-term endurance at 105 °C and supply-chain-ready packaging from a recognized capacitor manufacturer.

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