UCX1H821MNJ1MS

The UCX1H821MNJ1MS is a chip-type aluminum electrolytic capacitor from Nichicon's UCX series, engineered for continuous operation up to +135°C. It provides a compact surface-mount solution for designs that require high-temperature endurance and defined low-temperature ESR behavior.

Designed for automotive and other high-temperature electronic applications, this surface-mount, tape-fed component combines 820 µF capacitance at 50 V with defined ripple current and ESR characteristics to support power filtering and energy storage in demanding thermal environments.

Key Features

• Electrical Capacity & Voltage — 820 µF nominal capacitance rated at 50 V for bulk energy storage and decoupling.
• High Temperature Rating & Endurance — Operating temperature range −40 °C to +135 °C with an endurance rating of 2000 hours at 135 °C under rated voltage.
• Defined ESR — Equivalent series resistance specified as 70 mΩ at 100 kHz; ESR also characterized after −40 °C testing to ensure performance across temperature extremes.
• Ripple Current Capability — Supports 600 mA at 120 Hz and 1.2 A at 10 kHz, enabling use in switching and high-frequency power environments.
• Surface-Mount, Tape-Feed Compatible — Chip-type, surface-mount radial can packaged for automatic mounting machines fed with carrier tape; recommended land size L: 1.83 × W: 1.83 cm.
• Automotive-Grade Reliability — AEC-Q200 qualified and RoHS compliant (2011/65/EU, (EU)2015/863) for regulated markets.
• Compact Footprint — Case dimensions L: 1.65 × D: 1.8 cm to support space-constrained board layouts.

Typical Applications

• Automotive Electronics — Bulk filtering and energy storage in control modules and power subsystems where +135 °C operation and AEC-Q200 qualification are required.
• High-Temperature Power Modules — Filtering and decoupling in power conversion circuits subjected to elevated ambient temperatures.
• Board-Level Bulk Storage — Compact surface-mount solution for smoothing and hold-up in systems that require reliable capacitance at high operating temperature.

Unique Advantages

• High-Temperature Endurance: Rated for continuous operation to +135 °C with 2000-hour endurance at that temperature, helping extend service life in hot environments.
• Temperature-Verified ESR: ESR specified at 100 kHz and characterized after −40 °C testing, providing predictable performance across cold-start and high-temperature conditions.
• Automotive Qualification: AEC-Q200 qualification supports use in automotive designs requiring industry-recognized component reliability.
• Robust Ripple Handling: Specified ripple current values at both low and high frequencies (600 mA at 120 Hz, 1.2 A at 10 kHz) for demanding power applications.
• Assembly-Friendly Packaging: Compatible with carrier-tape automated mounting, simplifying high-volume PCB assembly.
• Regulatory Compliance: RoHS compliant per 2011/65/EU and (EU)2015/863, supporting environmental requirements.

Why Choose UCX1H821MNJ1MS?

The UCX1H821MNJ1MS delivers a focused combination of high capacitance (820 µF), a 50 V rating, and validated performance over −40 °C to +135 °C. Its endurance at elevated temperature, temperature-checked ESR, and AEC-Q200 qualification make it a practical choice for designers building robust systems for automotive and other high-temperature environments.

This part is suited for engineers who need compact, surface-mount bulk capacitance with predictable ripple and ESR behavior across wide temperature ranges, while maintaining compliance with RoHS and automotive reliability expectations.

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