UCZ1K391MNQ1MS

The UCZ1K391MNQ1MS is a chip‑type aluminum electrolytic capacitor engineered for high-temperature surface-mount applications. It provides 390 μF capacitance at an 80 V rating in a compact radial can SMD package designed for automated carrier‑tape assembly.

With an operating temperature range from -40°C to +125°C and AEC‑Q200 qualification, this part is targeted at designs that require verified high‑temperature endurance and predictable ESR behavior across temperature extremes.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance with an 80 V rated voltage and ±20% tolerance (measured at 120 Hz, 20°C).
• High‑Temperature Capability — Specified for operation from -40°C to +125°C and designed for continuous application at 125°C with endurance up to 4000 hours for the applicable case sizes.
• Low‑Temperature ESR Specification — ESR performance is specified after testing at -40°C to ensure predictable behavior in cold environments.
• Measured ESR & Ripple Handling — ESR of 120 mΩ at 100 kHz; ripple current ratings of 800 mA at 120 Hz and 1.6 A at 10 kHz, enabling robust AC ripple filtering at both low and high frequencies.
• Surface‑Mount, Tape‑Fed Package — Chip type radial can SMD package (L: 2.15 × D: 1.6 cm) compatible with automatic mounting machines fed with carrier tape; suggested land size L: 1.63 × W: 1.63 cm.
• Reliability & Compliance — AEC‑Q200 qualified and RoHS compliant for regulated environments and long-term reliability requirements.
• Polarized Electrolytic — Polarized construction appropriate for DC filtering and energy storage roles where polarity is defined.

Typical Applications

• Automotive Electronics — Designed for automotive use with AEC‑Q200 qualification and a wide temperature range, suitable for modules exposed to elevated temperatures.
• High‑Temperature Power Filtering — Useful for power supply decoupling and bulk energy storage in systems operating up to +125°C.
• Automated Surface‑Mount Production — Package and tape‑feed compatibility streamline automated pick‑and‑place assembly for high-volume manufacturing.

Unique Advantages

• Proven High‑Temperature Endurance: Rated endurance up to 4000 hours at 125°C (for applicable case sizes), supporting long service life in hot operating environments.
• Temperature‑Verified ESR: ESR specified after -40°C testing to provide designers with verified low‑temperature performance data for reliable cold‑start behavior.
• Wide Operating Range: -40°C to +125°C temperature range enables use across demanding thermal environments without derating beyond the specified limits.
• High Voltage Handling: 80 V rating gives headroom for higher-voltage power systems requiring electrolytic capacitance in a compact SMD form factor.
• Assembly‑Friendly Package: Radial can SMD in a tape‑fed format reduces BOM complexity and integrates into automated production flows.
• Standards Compliance: AEC‑Q200 qualification and RoHS compliance support deployment in regulated and reliability‑focused designs.

Why Choose UCZ1K391MNQ1MS?

UCZ1K391MNQ1MS combines a high voltage rating and substantial capacitance in a compact, surface‑mount can designed for automated assembly and sustained operation at elevated temperatures. The part’s ESR and ripple current specifications—measured across frequency and temperature—give engineers predictable filtering performance for demanding power applications.

This capacitor is well suited to designs requiring verified high‑temperature endurance and AEC‑level reliability, offering longevity and stable electrical characteristics that help reduce field failures and maintenance in temperature‑challenging environments.

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