UCY2W121MHD

The UCY2W121MHD is a radial-lead aluminum electrolytic capacitor from Nichicon's UCY series, rated at 120 µF and 450 V. It combines a compact radial can package (φ18 × 40L) with high-voltage capability for demanding DC filtering and energy-storage tasks.

Designed for applications that require sustained performance under elevated temperature and ripple conditions, this part offers high ripple current handling and long operational life, making it suitable for automotive power electronics and industrial power supply and ballast applications.

Key Features

• High Voltage Rating — 450 V rated voltage for high-voltage DC applications.
• Capacitance & Tolerance — 120 µF capacitance with tolerance −20%~20% at 120 Hz, 20°C.
• High Ripple Current Capability — Low-frequency ripple current 930 mA (120 Hz) and high-frequency ripple current 1.86 A (100 kHz), supporting effective ripple attenuation across frequencies.
• Long Life Endurance — Rated for 12,000 hours at 105°C under specified DC bias plus rated ripple current, per series endurance characteristics.
• Operating Temperature Range — −40°C to +105°C for broad environmental tolerance.
• Electrical Loss Characteristics — tan δ (DF) = 0.24 measured at 20°C, 120 Hz (450 V rating).
• Leakage Current — Specified leakage current of 2,260 µA.
• Radial Can Package — φ18 × 40L can with 7.5 mm lead spacing (±0.5 mm) and radial lead mounting for through-hole assembly; available in bulk or bag packing.
• Qualification & Compliance — AEC-Q200 rated and RoHS compliant; part status: Mass Production.

Typical Applications

• Automotive Power Electronics — Energy storage and ripple filtering in on-board DC systems where AEC-Q200 qualification and high-voltage capability are required.
• Power Supplies — Bulk filtering and smoothing in high-voltage power supplies and converters benefiting from the 450 V rating and high ripple-current handling.
• Ballasts and Industrial DC Circuits — DC filtering and energy buffering in ballast and industrial power circuits that operate at elevated temperatures and require long life.

Unique Advantages

• 450 V Rating for High-Voltage Designs: Supports higher DC bus voltages without series connection of multiple capacitors.
• High Ripple-Current Performance: 930 mA (120 Hz) and 1.86 A (100 kHz) ripple ratings reduce thermal stress and extend operational stability under load.
• Long Operational Life at Elevated Temperature: 12,000 hours at 105°C provides predictable lifetime for long-duration deployments.
• AEC-Q200 Qualification: Provides confidence for use in automotive applications that require component-level qualification.
• Compact Radial Can Footprint: φ18 × 40L package with 7.5 mm lead spacing simplifies through-hole assembly and board layout in space-constrained designs.
• Regulatory Compliance: RoHS compliant for use in markets requiring lead-free directive conformance.

Why Choose UCY2W121MHD?

UCY2W121MHD positions itself as a robust high-voltage electrolytic option for engineers needing a combination of 450 V capability, strong ripple-current performance, and long life at elevated temperature. Its AEC-Q200 rating and RoHS compliance make it appropriate for automotive and industrial applications where qualification and regulatory alignment matter.

This part is well suited to designs that require dependable DC filtering and energy buffering over extended duty cycles and elevated temperatures. Availability in mass production and standard radial can packaging simplifies procurement and mechanical integration into existing through-hole assemblies.

Request a quote or contact sales to discuss pricing, lead times and how UCY2W121MHD can fit into your high-voltage power and automotive designs.