ULD1A221MED

The ULD1A221MED is a radial-lead, polarized aluminum electrolytic capacitor in Nichicon’s ULD miniature, long-life family. It delivers 220 µF at a 10 V rating in a compact φ6.3 × 11 mm can with 2.5 mm lead spacing, intended for general-purpose power filtering and decoupling in compact electronic designs.

Designed for extended operation, this part is specified for 10,000 hours at +105°C and offers low-frequency and high-frequency ripple current capability, low leakage, and RoHS compliance—making it suitable for LED power supplies and other space-constrained power applications.

Key Features

• Capacitance & Voltage: 220 µF nominal capacitance at a 10 V rated voltage, with a capacitance tolerance of ±20% (−20% to +20%).
• Long Life Endurance: Rated for 10,000 hours at +105°C under specified load life conditions to support extended operating lifetimes in demanding environments.
• Ripple Current Performance: Low-frequency ripple current of 147 mA (120 Hz) and high-frequency ripple current of 210 mA (100 kHz) for effective smoothing across a range of switching frequencies.
• Low Leakage and Dissipation: Leakage current specified at 22 µA and tangent of loss angle (tan δ) of 0.45 measured at 20°C, 120 Hz, and 10 V for predictable loss behavior.
• Compact Radial Package: Radial lead, can-style package with dimensions φ6.3 × 11 mm and lead spacing of 2.5 mm (±0.5 mm), suitable for through-hole mounting in space-limited PCBs.
• Environmental Compliance: RoHS compliant.
• Packaging Options: Available in Bulk (no terminal forming) and Bag packing for flexible procurement and assembly handling.
• Product Status: End Of Life — available details reflect final specification for design review and replacement planning.

Typical Applications

• LED Power Supplies: Provides bulk smoothing and ripple attenuation in compact LED driver power stages where long life at elevated temperature is required.
• General Power Filtering: Suited for decoupling and smoothing in small power-supply modules and point-of-load circuits in compact electronic equipment.
• Embedded and Consumer Electronics: Useful for local energy storage and noise suppression in space-constrained PCB layouts using through-hole components.

Unique Advantages

• High temperature endurance: 10,000-hour rating at +105°C supports sustained performance in warm operating environments, reducing the need for frequent replacement.
• Compact footprint: φ6.3 × 11 mm can and 2.5 mm lead spacing enable integration into dense, space-limited boards while retaining through-hole robustness.
• Broad ripple capability: Specified ripple performance at both low and high frequencies accommodates a range of switching and linear power designs.
• Predictable electrical behavior: Defined tan δ and leakage current specs at measurement conditions (20°C, 120 Hz, 10 V) simplify selection and design margin calculations.
• RoHS compliance: Meets current RoHS requirements for lead-free assemblies and regulatory alignment.

Why Choose ULD1A221MED?

ULD1A221MED pairs a compact radial-can package with long-life qualification and measurable electrical characteristics to support reliable power filtering in constrained designs. Its specified ripple currents, low leakage, and defined tan δ provide the predictability designers need when optimizing supply stability and thermal margins.

This part is appropriate for engineers specifying through-hole capacitors for LED power supplies, general-purpose power modules, and embedded systems that require documented endurance at elevated temperature and RoHS compliance. Note that this product is listed as End Of Life; use this information to evaluate lifecycle planning and replacement strategies.

If you would like pricing or availability information, request a quote or submit an inquiry to our sales team with your required quantities and delivery needs.