ULD2W330MHD

The ULD2W330MHD from Nichicon is a radial-lead aluminum electrolytic capacitor in the ULD series, offering 33 µF capacitance at a 450 V rating. It is a compact, polarized can-style capacitor sized φ16 × 25 mm (D: 16 mm × L: 25 mm) with 7.5 mm lead spacing, designed for general-purpose power electronics where high-voltage filtering and long operational life are required.

Engineered for demanding ambient conditions, this component provides long-life endurance and stable electrical characteristics across a wide temperature range, making it suitable for power supply and LED lighting applications and other general-purpose electronic systems.

Key Features

• Rated Capacitance & Tolerance — 33 µF nominal with ±20% tolerance, specified at 120 Hz, 20°C for predictable filtering performance.
• High Voltage Rating — 450 V rated voltage for high-voltage DC bus and power-supply applications.
• Long Life Endurance — Designed for 20,000 hours at 105°C, supporting sustained operation in elevated temperature environments.
• Wide Operating Temperature — −40°C to +105°C rating to cover a broad range of ambient conditions.
• Ripple Current Capability — Low-frequency ripple current 392 mA (120 Hz) and high-frequency ripple current 705.6 mA (100 kHz) to handle AC ripple in power stages.
• Low Dissipation Factor — tan δ = 0.24 (max) measured at 20°C, 120 Hz, for efficient energy handling and reduced heating.
• Low Leakage Current — Specified leakage current of 694 µA, supporting low-standby-loss designs.
• Radial Lead Can Package — φ16 × 25 mm can with 7.5 mm lead spacing (±0.5 mm) for through-hole mounting and easy PCB placement; available in bulk or bag packing.
• RoHS Compliant — Meets RoHS requirements for material compliance.

Typical Applications

• LED Lighting Power Supplies — Long life at 105°C and 450 V rating support smoothing and energy storage in LED driver circuits.
• High-Voltage DC Bus Filtering — 450 V rating and 33 µF capacitance provide bulk decoupling for power converters and DC link circuits.
• General-Purpose Power Electronics — Through-hole radial-lead package and robust ripple current ratings make it suitable for diverse power-supply and industrial control boards.

Unique Advantages

• Extended Operational Lifetime: 20,000 hours at 105°C provides predictable aging behavior for long-term deployed systems.
• High-Voltage Capability: 450 V rating enables use on high-voltage rails without needing series configurations.
• Balanced Ripple Handling: Specified ripple current values at both low and high frequencies reduce audible noise and thermal stress in switching environments.
• Compact Through-Hole Form Factor: φ16 × 25 mm can and 7.5 mm lead spacing simplify retrofits and designs that prefer radial-lead components.
• Controlled Electrical Losses: tan δ = 0.24 (20°C, 120 Hz) and low leakage current help minimize power dissipation in continuous-duty applications.
• Regulatory Compliance: RoHS-compliant construction supports environmental and regulatory requirements.

Why Choose ULD2W330MHD?

ULD2W330MHD combines a high 450 V rating with 33 µF capacitance and long-life endurance of 20,000 hours at 105°C, delivering reliable energy storage and smoothing for high-voltage power circuits. Its radial-lead, can-style package (φ16 × 25 mm) with 7.5 mm lead spacing fits conventional through-hole assembly workflows while providing robust ripple-current capability across low and high frequencies.

This capacitor is well suited to engineers and procurement teams designing power supplies, LED drivers, and other general-purpose electronic systems that require a verified long-life component with clear electrical specifications and RoHS compliance.

Request a quote or submit an inquiry to sales to check current availability, packaging options, and pricing for ULD2W330MHD.