ULD2W150MHD

The ULD2W150MHD is a radial-lead aluminum electrolytic capacitor from Nichicon's ULD series, offering 15 µF capacitance at a 450 V rating. Designed as a miniature, long-life solution, it targets general-purpose high-voltage filtering and power-supply applications including LED lighting power supplies.

Key electrical characteristics include a ±20% capacitance tolerance at 120 Hz, a measured tanδ of 0.24 (20°C, 120 Hz), low and high frequency ripple current specifications, and a rated endurance of 20000 hours at +105°C. The part is supplied in bulk or bag packing and is in mass production.

Key Features

• High Voltage Rating — Rated for 450 V operation, suitable for high-voltage rails and energy-storage requirements within that voltage envelope.
• Compact Radial Package — φ12.5 × 20 mm can with radial leads and 5 mm lead spacing (±0.5 mm) for through-hole PCB mounting and tight-layout designs.
• Long Life Endurance — Specified for 20000 hours of load life at +105°C under the ULD series endurance conditions.
• Temperature Range — Operates from −40°C to +105°C for broad environmental use.
• Known Dissipation — tanδ = 0.24 at 20°C, 120 Hz provides a defined dissipation factor for thermal and circuit design.
• Leakage and Ripple Performance — Leakage current specified at 370 µA, with ripple current ratings of 140 mA (120 Hz) and 266 mA (100 kHz) for low- and high-frequency applications.
• RoHS Compliant — Meets RoHS requirements for restricted substances.

Typical Applications

• LED Lighting Power Supplies — Provides filtering and bulk energy storage in LED drivers where long life at elevated temperature is required.
• High-Voltage Power Filtering — Used for smoothing and decoupling on 450 V rails and other high-voltage circuits.
• General-Purpose Power Supplies — Suitable for designers needing a compact, long-life electrolytic for through-hole designs in consumer and industrial equipment.

Unique Advantages

• Durable, Long-Term Operation — 20000-hour endurance at 105°C reduces maintenance and replacement frequency in continuous-duty applications.
• High-Voltage Capability in a Small Footprint — 450 V rating in a φ12.5 × 20 mm package allows designers to conserve board space while meeting voltage requirements.
• Dual Frequency Ripple Specifications — Separate low-frequency (120 Hz) and high-frequency (100 kHz) ripple current ratings help in selecting the part for both mains-derived and switching supply environments.
• Predictable Dissipation and Leakage — Specified tanδ (0.24) and leakage current (370 µA) enable accurate thermal and leakage budgeting in designs.
• Flexible Ordering Options — Available in bulk or bag packing to support prototype and production needs.

Why Choose ULD2W150MHD?

The ULD2W150MHD combines a 450 V rating with the ULD series' long-life platform to deliver predictable, long-duration performance in compact through-hole form. Its defined dissipation factor, leakage current, and frequency-specific ripple ratings make it suitable for engineers designing high-voltage filtering and LED power supplies that demand durability at elevated temperatures.

Manufactured by Nichicon and offered in mass production with RoHS compliance, this capacitor is aimed at designers and procurement teams seeking a verified, long-life electrolytic solution for general-purpose high-voltage applications.

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