UBW1K221MHD

The UBW1K221MHD is a miniature, high-reliability aluminum electrolytic capacitor in a radial can package from Nichicon's UBW series. It is a polarized, radial-lead component specified for demanding environments, offering 220 µF capacitance at an 80 V rating.

Designed for applications that require elevated temperature tolerance and extended endurance, this part balances compact packaging with performance characteristics such as low impedance, rated ripple current, and industry AEC-Q200 qualification for use in automotive and similar demanding markets.

Key Features

• Capacitance & Voltage — 220 µF nominal capacitance with an 80 V rated voltage.
• Temperature Range — Rated for operation from −55 °C to +135 °C, suitable for high-temperature environments.
• High-Reliability Qualification — AEC-Q200 listed in product data, supporting use in automotive and other reliability-focused systems.
• Endurance — Long-life endurance: specified 3000 hours at +135 °C under rated voltage plus rated ripple current with defined limits on capacitance change, tan δ, and leakage current.
• Ripple Current Performance — Rated ripple current of 830.8 mA at 120 Hz and 1.24 A at 10 kHz, enabling robust power filtering and decoupling at both low and high frequencies.
• Low Impedance — Series impedance of 180 mΩ, helping to minimize voltage drop and heat generation in power circuits.
• Package & Mounting — Radial can with radial lead mounting and 5 mm lead spacing for through-hole assembly; compact dimensions L: 2.5 cm × D: 1.25 cm.
• Polarized Electrolytic Design — Conventional polarized aluminum electrolytic capacitor construction for bulk energy storage and smoothing.
• Capacitance Tolerance — ±20% (−20% to +20%) at 120 Hz, 20 °C, per series specification.
• Leakage Current Specification — After one minute at rated voltage and 20 °C, leakage current ≤ 0.03·C·V or 4 µA, whichever is greater (series datasheet value).

Typical Applications

• Automotive Power Electronics — Bulk filtering and smoothing in control modules and power distribution systems where AEC-Q200 qualification and high-temperature operation are required.
• DC–DC Converters — Input/output smoothing and energy storage for converters that require reliable ripple-current handling across a range of frequencies.
• Motor Control and Actuators — Energy buffering and decoupling in motor drivers and actuator circuits operating in harsh temperature environments.
• Industrial Electronics — Power supply filtering and decoupling in industrial control equipment exposed to elevated ambient temperatures.

Unique Advantages

• High-temperature capability — Rated operation to +135 °C enables deployment in elevated-temperature assemblies and near-heat sources.
• AEC-Q200 qualification — Explicit series-level AEC-Q200 rating supports selection for automotive-grade designs and other reliability-driven applications.
• Extended endurance at temperature — 3000 hours specified endurance at 135 °C provides predictable long-term performance under sustained stress.
• Robust ripple-current handling — Specified ripple current at both 120 Hz and 10 kHz supports filtering across common switching and line frequencies.
• Compact radial form factor — Small L × D footprint with 5 mm lead spacing simplifies through-hole integration in space-constrained boards.
• Low series impedance — 180 mΩ impedance helps reduce AC voltage ripple and heating in power circuits.

Why Choose UBW1K221MHD?

UBW1K221MHD is positioned for designs that demand a combination of compact size, elevated temperature tolerance, and proven endurance. Its 220 µF/80 V rating, low impedance, and specified ripple-current performance make it suitable for power filtering and energy-storage roles in automotive and industrial systems.

This part is well suited to engineers and OEMs specifying components for long-life, high-temperature applications where AEC-Q200 qualification and clear endurance limits help reduce design risk and support predictable field performance.

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