UCZ1K521MNQ1MS

The UCZ1K521MNQ1MS is a high-reliability, chip-type aluminum electrolytic capacitor designed for surface-mount assembly. It delivers 520 µF nominal capacitance at an 80 V rating with a wide operating temperature range from −40°C to +125°C.

Built for demanding power electronics, this SMD can offers low-temperature ESR performance (110 mΩ at 100 kHz, 20°C), high ripple-handling capability (850 mA at 120 Hz; 1.7 A at 100 kHz) and long endurance (4000 hours at 125°C), making it suitable for high-temperature, high-reliability applications including automotive systems where AEC‑Q200 qualification is required.

Key Features

• Capacitance & Voltage: 520 µF nominal capacitance with ±20% tolerance and an 80 V rated voltage for higher-voltage power circuits.
• High-Temperature Endurance: Rated for continuous operation up to +125°C with an endurance specification of 4000 hours at 125°C.
• Low-Temperature ESR Specification: ESR of 110 mΩ measured at 20°C/100 kHz, with added ESR specification after −40°C testing to support low‑temperature performance.
• Ripple Current Capacity: Low-frequency ripple current 850 mA (120 Hz) and high-frequency ripple current 1.7 A (100 kHz) to support smoothing and decoupling in power conversion stages.
• Surface-Mount Can Package: SMD radial can (φ18 × 21.5L) designed for automated placement; packaged in embossed carrier taping suitable for automatic mounting machines.
• Qualification & Compliance: AEC‑Q200 qualified and RoHS compliant, supporting use in regulated, high-reliability designs.

Typical Applications

• Automotive power electronics: Use in vehicle power systems where AEC‑Q200 qualification, high voltage rating and extended high-temperature endurance are required.
• DC‑DC converters and regulators: Bulk smoothing and output decoupling for higher-voltage converter stages leveraging 520 µF capacitance and robust ripple current capability.
• Industrial high-temperature equipment: Power filtering and energy smoothing in equipment that operates near +125°C, enabled by the capacitor’s long endurance at elevated temperature.
• Surface-mount power modules: Compact SMD can and embossed carrier taping support automated assembly of high-voltage, high-reliability power modules.

Unique Advantages

• High-voltage in an SMD can: 80 V rating provides headroom for higher-voltage rail designs without switching to larger discrete solutions.
• Extended high-temperature life: 4000 hours at +125°C gives designers a measurable reliability target for sustained high-temperature operation.
• Low-temperature ESR characterization: ESR specified after −40°C testing supports predictable performance across the full −40°C to +125°C operating range.
• Strong ripple-handling: Specified low- and high-frequency ripple current ratings enable effective smoothing in both mains-frequency and switching-frequency environments.
• Automated assembly ready: Embossed carrier taping and chip-type SMD can format simplify pick-and-place integration into automated production lines.
• Industry qualification and compliance: AEC‑Q200 qualification and RoHS compliance address regulatory and reliability requirements for professional designs.

Why Choose UCZ1K521MNQ1MS?

UCZ1K521MNQ1MS combines high capacitance and an 80 V rating in a surface-mount aluminum electrolytic can engineered for high-temperature endurance and predictable low-temperature ESR. Its ripple current capability and AEC‑Q200 qualification make it a practical choice where sustained thermal and electrical stress are design drivers.

This part is aimed at engineers and procurement teams building robust power subsystems—especially in automotive and demanding industrial applications—seeking an SMD electrolytic solution with defined endurance, compliance, and automated-assembly compatibility.

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