UCZ1K521MNJ1MS

The UCZ1K521MNJ1MS is a chip-type aluminum electrolytic capacitor designed for high-temperature, high-reliability applications. It combines a 520 µF capacitance with an 80 V rating in a surface-mount radial-can package suitable for automated placement.

Engineered for demanding environments, the device targets automotive and other high-temperature electronics where long life, measured ESR at low temperature, and AEC-Q200 qualification are required.

Key Features

• Capacitance & Voltage — 520 µF nominal capacitance with an 80 V rated voltage and ±20% tolerance (at 120 Hz, 20°C).
• High-temperature operation — Specified operating range from -40°C to +125°C with endurance up to 4,000 hours at 125°C.
• Low-temperature ESR specification — ESR defined at 100 kHz (110 mΩ) and validated after the -40°C test to ensure predictable low-temperature performance.
• Ripple current capability — 850 mA at 120 Hz and 1.7 A at 10 kHz, supporting power-rail filtering and decoupling in high-stress environments.
• Automotive-grade qualification — AEC-Q200 qualified for use in applications requiring automotive reliability.
• SMD-compatible package — Radial can surface-mount package designed for automatic mounting machines using carrier tape; recommended land size L: 1.83 × W: 1.83 cm.
• RoHS compliant — Meets the RoHS directive (2011/65/EU, (EU)2015/863).
• Physical dimensions — Case measures L: 2.15 × D: 1.8 cm, enabling compact board-level integration.

Typical Applications

• Automotive power electronics — Suitable for vehicle power rails and DC-DC converters where 80 V rating, 125°C endurance, and AEC-Q200 qualification are required.
• Engine and powertrain control modules — Provides bulk capacitance and high-temperature reliability for control electronics operating across wide temperature ranges.
• In-vehicle electronics and infotainment — Supports stable decoupling and smoothing on high-voltage rails in body and infotainment systems.
• Automated surface-mount assembly — Package and carrier-tape compatibility enable efficient placement on automatic mounting machines for volume production.

Unique Advantages

• High-temperature endurance: 4,000 hours at 125°C ensures sustained performance in thermally demanding assemblies.
• Validated low-temperature ESR: ESR specified at 100 kHz and checked after -40°C testing for reliable cold-start and low-temperature behavior.
• Automotive-grade reliability: AEC-Q200 qualification supports use in applications that require automotive-level validation.
• Robust ripple handling: Rated ripple currents of 850 mA (120 Hz) and 1.7 A (10 kHz) accommodate a range of power-conditioning needs.
• SMD-friendly form factor: Radial can designed for carrier-tape feeding streamlines automated PCB assembly and reduces handling complexity.
• Wide operating window: -40°C to +125°C operation combined with RoHS compliance provides a balance of reliability and environmental conformity.

Why Choose UCZ1K521MNJ1MS?

The UCZ1K521MNJ1MS combines a high 80 V rating and 520 µF capacitance with AEC-Q200 qualification and an extended operating range to address high-temperature, high-reliability power designs. Its validated ESR after low-temperature testing and defined ripple-current performance make it suitable for applications requiring predictable behavior across temperature extremes.

This part is a strong option for engineers specifying capacitors for automotive electronics and other demanding systems that need a compact SMD-capable radial-can solution with documented endurance and manufacturing compatibility.

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