UCZ1J391MNQ1MS

The UCZ1J391MNQ1MS is a chip-type aluminum electrolytic capacitor in a surface-mount can designed for high-temperature, high-reliability applications. With a 390 µF capacitance at 63 V and AEC-Q200 qualification, it targets robust power and filtering duties where elevated operating temperature, controlled ESR and defined ripple handling are required.

Its construction and embossed carrier taping packaging support automated SMT assembly and deployment in demanding environments, while a wide operating temperature range of -40°C to 125°C enables sustained performance under thermal stress.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance with a 63 V rated voltage and ±20% tolerance for bulk energy storage and decoupling in power systems.
• High‑Temperature Endurance — Endurance specified for 3500 hours at 125°C, providing predictable lifetime behavior in elevated-temperature applications.
• Low‑Temperature Performance — Low-temperature impedance characteristics with a maximum impedance ratio of 3 (|Z(-40°C)|/|Z(+20°C)|) at the 63 V rating, measured at 120 Hz, for improved cold-start and low-temperature stability.
• Loss and Leakage — tanδ (DF) specified at 0.12 measured at 20°C and 120 Hz, and measured leakage current of 245.7 µA, enabling designers to account for dielectric loss and standby current in tight budgets.
• ESR and Ripple Handling — ESR of 130 mΩ measured at 20°C/100 kHz, with low-frequency ripple current of 950 mA (120 Hz) and high-frequency ripple current of 1.9 A (10 kHz) for effective smoothing across frequency bands.
• Package & Mounting — φ16 × 16.5L metal-can SMD package optimized for surface-mount assembly; supplied in embossed carrier taping for automated placement. Surface-mount land size guidance: 1.63 × 1.63 cm.
• Compliance & Qualification — AEC-Q200 qualified and RoHS compliant, supporting applications that require recognized reliability processes and environmental compliance.

Typical Applications

• Automotive Electronics — Bulk filtering and decoupling in automotive power rails where AEC-Q200 qualification and -40°C to 125°C operation are required.
• High‑Temperature Power Systems — Energy storage and smoothing in systems exposed to elevated temperatures, leveraging the 3500 h endurance rating at 125°C.
• Switch‑Mode Power Supplies — Output filtering and ripple attenuation across low and high frequencies, using the specified ESR and ripple current ratings to size capacitors for stability and thermal stress.

Unique Advantages

• Designed for Elevated Temperatures: 3500-hour endurance at 125°C provides predictable aging characteristics for designs operating near the upper temperature limit.
• Broad Ripple Capability: Distinct low- and high-frequency ripple current ratings (950 mA @120 Hz, 1.9 A @10 kHz) let engineers balance filtering across frequency bands without overrating components.
• Measured High‑Frequency ESR: 130 mΩ at 20°C/100 kHz gives a verifiable metric for high-frequency impedance in power-conversion and decoupling applications.
• Automotive-Grade Qualification: AEC-Q200 qualification supports use in designs that demand automotive-level reliability and manufacturing controls.
• SMT‑Friendly Packaging: Embossed carrier taping and a compact φ16 × 16.5L SMD can simplify automated assembly and reduce PCB footprint compared with larger radial options.
• RoHS Compliant: Environmental compliance is documented for regulated supply chains.

Why Choose UCZ1J391MNQ1MS?

The UCZ1J391MNQ1MS combines a 390 µF bulk capacitance with a 63 V rating, defined ESR at high frequency, and dual-band ripple specifications to deliver a dependable energy-storage solution for power-dense designs. Its AEC-Q200 qualification and -40°C to 125°C operating range make it suitable for applications that require controlled performance across wide temperature swings.

Choose this part when you need an SMD aluminum electrolytic capacitor offering measured electrical parameters, high-temperature endurance, and packaging optimized for automated assembly—helping reduce design risk and simplify BOM choices in demanding power systems.

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