UHW2A180MED

The UHW2A180MED is a miniature, high-reliability aluminum electrolytic capacitor from Nichicon’s UHW series, supplied in a radial lead (can) package. It delivers 18 µF at 100 V with a compact φ6.3 × 11 mm case and is designed for general-purpose electronic applications that require high ripple handling and stable high-frequency performance.

Key performance characteristics include low impedance at high frequency, rated ripple capability up to 500 mA at higher frequencies, a wide operating temperature range of −40 °C to +105 °C, and an endurance rating of 8000 hours at 105 °C. Status: End Of Life.

Key Features

• Capacitance & Voltage — 18 µF nominal capacitance with a rated voltage of 100 V and tolerance of −20% to +20%.
• High ripple capability — Specified low-frequency ripple current of 200 mA (120 Hz) and high-frequency ripple current of 500 mA (10 kHz), enabling effective smoothing under varied ripple conditions.
• Low loss and leakage — Dissipation factor (tanδ) of 0.08 (20 °C, 120 Hz) and leakage current of 18 µA, limiting self-heating and standby drain.
• High-temperature endurance — Rated for 8000 hours at 105 °C when subjected to DC bias plus rated ripple current.
• Compact radial package — φ6.3 × 11 mm can with 2.5 mm lead spacing (±0.5 mm), radial lead mounting for through-hole assemblies; available in bulk and bag packing (no terminal forming).
• RoHS compliant — Meets RoHS directives as indicated in the UHW series documentation.

Typical Applications

• Power supply filtering — Smoothing and decoupling in power rails where 100 V rating and moderate capacitance are required.
• High-frequency ripple suppression — Effective at reducing ripple up to 10 kHz, leveraging the series’ lower impedance at high frequency.
• General-purpose electronics — Through-hole designs needing a compact, high-voltage electrolytic with defined endurance at elevated temperatures.

Unique Advantages

• Compact high-voltage solution: 18 µF at 100 V in a φ6.3 × 11 mm can minimizes board space for through-hole implementations.
• High ripple tolerance: Rated ripple currents (200 mA @120 Hz, 500 mA @10 kHz) reduce the need for additional oversized capacitors in ripple-critical circuits.
• Low loss at rated conditions: Tanδ of 0.08 at 20 °C, 120 Hz helps limit internal heating under AC conditions.
• Controlled leakage: Leakage current of 18 µA supports lower standby currents in power-sensitive designs.
• Designed for elevated ambient use: 8000-hour endurance at 105 °C gives predictable life performance under sustained thermal stress.
• Through-hole friendliness: Radial lead form with standard 2.5 mm lead spacing eases assembly in mixed-technology boards.

Why Choose UHW2A180MED?

UHW2A180MED is positioned for designs that require a compact, high-voltage electrolytic with measurable high-frequency performance and long-term endurance. Its combination of 100 V rating, low loss (tanδ 0.08), defined ripple capabilities, and 8000-hour life at 105 °C provides a predictable component for power filtering and decoupling in general-purpose electronic products.

This part is appropriate for engineers and buyers specifying through-hole electrolytics where space, ripple handling, and thermal endurance are priorities. As part of Nichicon’s UHW series, it follows the series’ characteristics of reduced high-frequency impedance and high ripple capability.

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