UCZ1H821MNQ1MS

The UCZ1H821MNQ1MS is a chip-type aluminum electrolytic capacitor in Nichicon's UCZ series designed for high-reliability, high-temperature applications. It delivers 820 µF at 50 V in a surface-mount radial can package and is optimized for demanding power filtering and decoupling roles.

Targeted at automotive and industrial power electronics, this part combines extended high-temperature endurance, validated low-temperature ESR performance, and compliance to industry reliability standards to support long-life designs.

Key Features

• Capacitance & Voltage: 820 µF rated capacitance at 50 V with tolerance ±20% (measured at 120 Hz, 20°C), suitable for bulk smoothing and energy storage applications.
• High-temperature endurance: Designed for operation to +125°C and specified for 3500 hours at 125°C, supporting extended life in hot ambient environments.
• Low-temperature ESR performance: Includes a low-temperature ESR specification with ESR measured after the -40°C test; nominal ESR is 78 mΩ at 100 kHz for stable performance across temperature extremes.
• Ripple current capability: Rated ripple current of 1.05 A at 120 Hz and 2.1 A at 10 kHz, enabling effective handling of AC ripple in power stages and converters.
• Surface-mount, tape-fed package: Chip-type radial can SMD designed for automatic mounting machines fed with carrier tape, streamlining automated assembly.
• Reliability & compliance: AEC-Q200 qualified and RoHS compliant, meeting industry expectations for high-reliability and regulatory requirements.
• Polarized device: Polarized aluminum electrolytic construction for straightforward integration into DC power rails.

Typical Applications

• Automotive power modules: Bulk smoothing and decoupling on power rails in ECUs, power converters, and other in-vehicle modules where AEC-Q200 qualification and high-temperature endurance are required.
• DC–DC converter outputs: Output filtering and energy storage to reduce ripple and stabilize voltage in regulated power subsystems.
• Industrial power supplies: Ripple suppression and bulk capacitance in high-temperature industrial controllers and power electronics.
• Motor drive electronics: Decoupling and buffering in drive stages to handle transient currents and maintain stable supply voltages.
• Telematics and infotainment modules: Local bulk capacitance and ripple management for on-board electronics operating across wide temperature ranges.

Unique Advantages

• Extended high-temperature life: 3500 hours at 125°C provides designers with a measurable endurance characteristic for hot-environment applications.
• Consistent low-temperature behavior: Added ESR specification after -40°C testing ensures predictable impedance and performance in cold starts and low-temperature operation.
• Measured high-frequency ESR: 78 mΩ at 100 kHz supports applications with high-frequency switching and helps maintain stable filtering at elevated frequencies.
• High ripple handling: Defined ripple ratings at both low and high frequencies (1.05 A at 120 Hz, 2.1 A at 10 kHz) enable reliable performance in switching and power-conversion environments.
• Assembly-ready SMD format: Chip-type, carrier-tape compatibility simplifies automated placement and reduces assembly cycle complexity.
• Industry-recognized reliability: AEC-Q200 qualification and RoHS compliance make this part suitable for regulated, high-reliability programs.

Why Choose UCZ1H821MNQ1MS?

The UCZ1H821MNQ1MS balances high capacitance with a robust thermal and ESR specification set, making it a practical choice for engineers designing power-dense systems that must endure elevated temperatures and temperature cycling. Its defined ripple current limits and post–-40°C ESR characterization provide predictable behavior across the operating range.

As part of Nichicon's UCZ series, this capacitor is positioned for designs that require surface-mount bulk capacitance with documented high-temperature endurance and industry reliability credentials, helping reduce risk in long-life automotive and industrial power designs.

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