UCY2D181MHD3

The UCY2D181MHD3 is a radial-lead aluminum electrolytic capacitor in Nichicon’s UCY series, engineered for high ripple current and long operational life. Its miniature can-style package and high-voltage rating make it suitable for power supply filtering and ballast applications, including automotive systems where AEC‑Q200 qualification is required.

Designed for demanding environments, this polarized capacitor delivers reliable smoothing and energy buffering across a wide temperature range and long endurance at elevated temperature.

Key Features

• Capacitance & Tolerance — 180 µF nominal with ±20% tolerance at 120 Hz, 20°C for predictable filtering and energy storage.
• Rated Voltage — 200 V DC rating suitable for higher-voltage power stages and DC-link circuits.
• High Ripple Current Capability — Low-frequency ripple current of 910 mA at 120 Hz and high-frequency ripple current of 1.82 A at 100 kHz to support switching supplies and high-frequency converters.
• Loss and Leakage — tanδ (DF) max 0.20 (measured at 20°C, 120 Hz) and measured leakage current of 1540 µA, enabling predictable dissipation and self-discharge characteristics.
• Thermal and Endurance Performance — Operating temperature from −40°C to +105°C with a rated life of 10,000 hours at 105°C for long-term stability under elevated temperatures.
• Package and Mechanical — Radial lead can with dimensions φ18 × 20 mm, lead spacing 7.5 mm (±0.5 mm), polarized construction for through-hole mounting and straightforward PCB layout.
• Qualification & Compliance — AEC‑Q200 qualified and RoHS compliant for regulated environments and automotive applications.
• Packaging — Supplied in bulk (no terminal forming) or bag packing to suit assembly and inventory processes.

Typical Applications

• Power Supplies and Converters — Smoothing and bulk energy storage in switching and linear power supplies where high ripple handling and long life are required.
• Ballast and Lighting Control — Filtering and energy buffering in ballast circuits as identified in the UCY series guidance.
• Automotive Power Electronics — Suitable for use in automotive systems that require AEC‑Q200 qualified components for elevated reliability.

Unique Advantages

• Long Endurance at Elevated Temperature: 10,000 hours at 105°C supports designs that must tolerate sustained thermal stress.
• High Ripple Handling: Separate low- and high-frequency ripple ratings (910 mA at 120 Hz and 1.82 A at 100 kHz) make it suitable for a wide range of power conversion frequencies.
• High Voltage Capability: 200 V rating provides headroom for higher-voltage DC-link and filtering applications.
• Compact Radial Can: φ18 × 20 mm package with 7.5 mm lead spacing balances board space and capacitance for through-hole assemblies.
• Industry Qualification & Compliance: AEC‑Q200 qualification and RoHS compliance support use in regulated and safety-conscious designs.

Why Choose UCY2D181MHD3?

UCY2D181MHD3 positions itself as a compact, high-reliability electrolytic solution for designers who need sustained ripple performance and long life at elevated temperature. Its combination of 180 µF capacitance, 200 V rating, and AEC‑Q200 qualification makes it well suited to demanding power-filtering and ballast roles, including automotive power electronics.

This part is appropriate for engineers prioritizing predictable loss characteristics (tanδ ≤ 0.20), defined leakage behavior, and robust ripple current capacity—offering durability and straightforward through-hole mounting for serviceable or high-reliability assemblies.

If you would like pricing, availability, or technical evaluation support for UCY2D181MHD3, request a quote or submit an inquiry to our sales team and we will respond with detailed commercial and lead-time information.