UHW2A181MHD

The UHW2A181MHD is a miniature, high-reliability aluminum electrolytic capacitor in a radial-lead can designed for general-purpose power applications. It delivers 180 µF capacitance at a 100 V rating with low impedance and high ripple-current capability, making it suitable for power-filtering and energy-storage roles in industrial and electronics systems.

Engineered for extended endurance, the UHW2A181MHD supports continuous operation across a wide temperature range and offers packaging options for bulk or bag packing in mass-production volumes.

Key Features

• Capacitance & Voltage — 180 µF capacitance rated at 100 V for higher-voltage DC applications.
• Low Impedance — Rated impedance of 180 mOhm supports efficient filtering and reduced voltage ripple under load.
• High Ripple Current — Low-frequency ripple current 700 mA (120 Hz) and high-frequency ripple current 1.75 A (10 kHz) enable robust performance across frequency ranges.
• Loss Angle (tan δ) — tan δ of 0.08 measured at 20°C, 120 Hz, providing predictable dissipation characteristics.
• Leakage Current — Specified leakage current of 180 µA for stable long-term operation after voltage application.
• High Endurance — Rated life of 12,000 hours at 105°C for reliable performance in elevated-temperature environments.
• Temperature Range — Operational from −40°C to +105°C to accommodate a wide range of environmental conditions.
• Package & Mounting — Radial lead, polarized aluminum can; physical size φ12.5 × 20 mm, lead spacing 5 mm (tolerance ±0.5 mm); available in bulk (no terminal forming) or bag packing.
• Compliance — RoHS compliant.
• Tolerance — Capacitance tolerance of −20% to +20% for design margin planning.

Typical Applications

• Power supply filtering: Use for bulk smoothing and decoupling in higher-voltage DC power supplies where a 100 V rating and high ripple capability are required.
• DC link and energy storage: Suitable for intermediate energy storage and DC-link support in power conversion circuits that demand long endurance at elevated temperatures.
• Industrial electronics: Applies to control and instrumentation equipment that require robust capacitors with wide temperature range and predictable leakage behavior.

Unique Advantages

• High-voltage capability: 100 V rating enables use in higher-voltage rails without changing capacitor topology.
• Frequency-flexible ripple performance: Documented ripple current ratings at both 120 Hz and 10 kHz support designs across low- and high-frequency domains.
• Compact high-reliability form factor: Miniature φ12.5 × 20 mm can reduces board space while maintaining endurance for extended operation at 105°C.
• Predictable electrical characteristics: Specified impedance, tan δ, and leakage current simplify thermal and performance budgeting in system designs.
• Manufacturing-ready packaging: Available in bulk or bag packing to accommodate automated or manual assembly workflows.
• RoHS compliance: Meets environmental directives for reduced hazardous substances.

Why Choose UHW2A181MHD?

The UHW2A181MHD balances compact size with high-voltage capability, low impedance, and robust ripple-current handling to meet demanding power management requirements. Its long-rated lifetime at 105°C and controlled leakage and dissipation characteristics make it well suited for engineers designing industrial power supplies, DC-link stages, and other systems that require dependable energy-storage and filtering components.

This part is positioned for customers seeking a reliable, production-ready aluminum electrolytic capacitor with clear electrical and mechanical specifications, RoHS compliance, and packaging options that support volume assembly processes.

Request a quote or submit a quotation request to Nichicon or your preferred distributor to get pricing and lead-time information for UHW2A181MHD.