UHD1H331MPD

The UHD1H331MPD is a Nichicon UHD series radial-lead aluminum electrolytic capacitor rated at 330 µF and 50 V. It is engineered for applications that require high ripple handling and low impedance in a compact φ10 × 25 mm can.

Key value propositions include high-frequency ripple capability, extended endurance at elevated temperature, and a wide operating temperature range, making it suitable for general-purpose electronic power designs.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance with a rated voltage of 50 V and capacitance tolerance of −20% to +20% (measured at 120 Hz, 20°C).
• High ripple current capability — Low-frequency ripple current of 1.309 A at 120 Hz and high-frequency ripple current of 1.87 A at 100 kHz, supporting demanding power applications.
• Low loss (tan δ) — tan δ = 0.10 specified at 20°C, 120 Hz, providing reduced dissipation in AC environments.
• Thermal endurance — Rated for 4,000 hours at 105°C under DC bias plus rated ripple current, with stated limits for capacitance change, tan δ increase, and leakage current.
• Wide temperature range — Operating from −40°C to +105°C for reliable performance across varied environments.
• Compact radial package — Radial-lead can, φ10 × 25 mm case with 5 mm lead spacing (±0.5 mm), available in bulk (no terminal forming) or bag packing for production handling.
• RoHS compliant — Meets the RoHS directive as stated for the UHD series.

Typical Applications

• Power supply filtering — High ripple current and low impedance characteristics support smoothing and decoupling in power supply stages.
• Switching regulator output — Compact φ10 × 25 mm radial can provides energy storage and ripple attenuation on regulator outputs.
• General-purpose electronics — The UHD1H331MPD is specified for general-purpose use across industrial and consumer equipment requiring reliable capacitance at elevated temperatures.

Unique Advantages

• High ripple tolerance: Specified ripple currents of 1.309 A (120 Hz) and 1.87 A (100 kHz) reduce stress on capacitor selection for AC-intensive circuits.
• Low dissipation factor: tan δ = 0.10 at 20°C, 120 Hz lowers internal heating and improves AC performance.
• Extended life at high temperature: Endurance rated to 4,000 hours at 105°C under specified conditions supports long-term reliability in hot environments.
• Compact radial form factor: φ10 × 25 mm can and standard 5 mm lead spacing make board layout and assembly straightforward for through-hole designs.
• Procurement flexibility: Available in bulk (no terminal forming) or bag packing to suit production handling and assembly workflows.
• Regulatory compliance: RoHS-compliant construction aligns with environmental requirements for many product lines.

Why Choose UHD1H331MPD?

The UHD1H331MPD from Nichicon’s UHD series combines a compact radial can with high ripple-current capability and low dissipation, providing a practical solution for general-purpose power designs that need reliable performance at elevated temperatures. Its 330 µF / 50 V rating, specified ripple currents, and 4,000-hour endurance at 105°C make it suitable for designers balancing size, thermal stress, and ripple handling.

This part is well suited to engineers and procurement teams specifying through-hole capacitors for power filtering, regulator outputs, and other general-purpose roles where verified electrical and endurance specifications are required.

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