UCY2E121MHD6

The UCY2E121MHD6 is a miniature aluminum electrolytic capacitor in a radial-lead can designed for high-reliability power applications. It delivers 120 µF capacitance at a 250 V rating with polarized radial leads and is offered in a compact φ18 × 20 mm package.

Engineered for demanding environments, this part targets power-supply smoothing, ballast and automotive applications where long life, high ripple capability and temperature durability are required. Key value comes from its 10,000-hour endurance at 105°C, AEC-Q200 rating, and industry-standard electrical characteristics.

Key Features

• Capacitance & Voltage: 120 µF nominal capacitance with a 250 V rated voltage and a tolerance of -20% to +20%.
• High ripple-current capability: Low-frequency ripple current 815 mA at 120 Hz and high-frequency ripple current 1.63 A at 100 kHz, enabling effective filtering in both low- and high-frequency converter stages.
• Long endurance at elevated temperature: Rated for 10,000 hours of life at +105°C under specified conditions.
• Loss factor and leakage: Tangent of loss angle (tan δ) max 0.20 at 20°C, 120 Hz and leakage current specified at 1300 µA, providing predictable loss and leakage behavior for design margining.
• Package and mounting: Radial lead, polarized aluminum can with φ18 mm diameter, 20 mm length, and 7.5 mm lead spacing (±0.5 mm), supplied in bulk or bag packing without terminal forming.
• Temperature range and reliability: Operating range -40°C to +105°C and AEC-Q200 qualification for high-reliability assemblies.
• Regulatory compliance: RoHS compliant.

Typical Applications

• Automotive power modules: Bulk energy storage and smoothing in in-vehicle power supplies where AEC-Q200 qualification and a 105°C endurance rating are required.
• Power supplies and converters: Input/output filtering and ripple suppression in switch-mode power supplies benefitting from the capacitor’s high ripple-current ratings at both 120 Hz and 100 kHz.
• Lighting ballasts: AC/DC ballast circuits that require durable electrolytic smoothing components capable of extended operation at elevated temperatures.

Unique Advantages

• Designed for high thermal stress: 10,000 hours at 105°C provides predictable lifetime behavior for elevated-temperature installations.
• Wide frequency ripple support: Specified ripple current at 120 Hz and 100 kHz supports both mains-frequency and high-frequency converter topologies.
• Compact radial package: φ18 × 20 mm can with standard 7.5 mm lead spacing simplifies layout in through-hole designs while conserving board space.
• Quality and qualification: AEC-Q200 rating supports use in high-reliability and automotive-related designs where component qualification is required.
• Predictable electrical parameters: Defined tan δ, leakage current, and tolerance simplify margin calculations and thermal management decisions.
• RoHS compliant supply: Environmentally compliant material set for regulated markets.

Why Choose UCY2E121MHD6?

UCY2E121MHD6 combines a compact radial can package with proven electrolytic performance characteristics—high ripple-current handling, tight loss-factor limits, and a specified 10,000-hour life at 105°C—making it suitable for engineers specifying robust bulk capacitance in constrained layouts. The part’s AEC-Q200 rating and RoHS compliance add qualification and regulatory clarity for long-term deployments.

This capacitor is ideal for designs that require reliable smoothing and energy storage across a range of frequencies and elevated temperatures, including automotive and industrial power subsystems. Its defined electrical and mechanical parameters allow straightforward integration, BOM control and lifetime planning.

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