UCY2G121MHD

The UCY2G121MHD is a high-reliability, miniature aluminum electrolytic capacitor in a radial-lead can designed for demanding power applications. It provides 120 µF capacitance at a 400 V rated voltage with a polarized radial-lead package and long endurance characteristics.

Engineered for power-supply and ballast uses and qualified to AEC-Q200, this part targets applications that require high ripple tolerance, extended life at elevated temperature, and RoHS-compliant materials.

Key Features

• Capacitance & Voltage — 120 µF nominal capacitance with a 400 V rated voltage and capacitance tolerance of −20% to +20%.
• High ripple current capability — Low-frequency ripple current 940 mA at 120 Hz and high-frequency ripple current 1.88 A at 100 kHz, enabling effective smoothing in power stages.
• Long endurance at high temperature — Rated life of 12,000 hours at +105°C under DC bias plus rated ripple current (10000 hours for some smaller sizes per series documentation).
• Stability and loss characteristics — Tangent of loss angle (tan δ) up to 0.24 measured at 20°C, 120 Hz; leakage current specified (2020 µA for this part).
• Compact radial-lead package — φ18 × 30.5 mm can with 7.5 mm lead spacing, 0.8 mm lead diameter, and standard radial mounting for through-hole assemblies; available in bulk or bag packing.
• Wide operating temperature — Specified operation from −40°C to +105°C for use across broad environmental conditions.
• Automotive-grade qualification — AEC-Q200 rated for designs requiring component-level automotive reliability.
• Regulatory compliance — RoHS-compliant construction.

Typical Applications

• Power supplies and DC filtering — Bulk and smoothing capacitor for AC/DC and DC/DC power stages where high voltage and ripple endurance are required.
• Ballasts and lighting power — Suited for ballast applications that demand sustained ripple handling and long life at elevated temperatures.
• Automotive electronic power modules — Useful in automotive power systems and control modules where AEC-Q200 qualification and high-temperature endurance are necessary.
• Industrial power control — Energy storage and decoupling in industrial power electronics with demanding ripple and thermal profiles.

Unique Advantages

• High-voltage capability: 400 V rating supports higher-voltage power rails without series stacking or complex topologies.
• High ripple tolerance: Defined ripple current ratings at low and high frequencies (940 mA at 120 Hz, 1.88 A at 100 kHz) reduce temperature rise and improve reliability in high-stress power circuits.
• Extended life at +105°C: 12,000-hour endurance at 105°C provides predictable long-term behavior in thermally challenging designs.
• Automotive-grade reliability: AEC-Q200 qualification enables deployment in vehicle systems subject to rigorous quality requirements.
• Compact radial-lead form factor: φ18 × 30.5 mm can and 7.5 mm lead spacing simplify through-hole mounting while minimizing board area.
• RoHS compliance: Environmentally compliant materials support regulatory requirements for modern electronics manufacturing.

Why Choose UCY2G121MHD?

UCY2G121MHD combines a high 400 V rating, substantial capacitance, and defined high-frequency and low-frequency ripple currents in a miniature radial-lead aluminum electrolytic package. Its 12,000-hour endurance at +105°C and AEC-Q200 qualification make it suitable for designs that require sustained performance under thermal and electrical stress.

This part is appropriate for engineers and procurement teams specifying reliable bulk energy storage and filtering in power supplies, ballast circuits, automotive power electronics, and industrial control equipment. Its regulated leakage, loss characteristics, and compact can format deliver a clear balance of performance and board-level integration for long-life power designs.

Request a quote or contact sales to discuss availability, lead times, and ordering quantities for UCY2G121MHD.