ULD2A4R7MDD

The ULD2A4R7MDD is a Nichicon ULD series aluminum electrolytic capacitor in a radial‑lead can package, offering 4.7 µF capacitance with a polarization suited for general‑purpose power electronics. It is designed for compact assemblies where durable electrolytic performance is required and is specifically noted as suited for power supplies for LED lighting.

Key value propositions include a rated voltage of 100 V, operation across a wide temperature span (−40 °C to +105 °C), and long life under rated conditions (specified load life at elevated temperature), making it appropriate for long‑run, temperature‑challenging power applications.

Key Features

• Capacitance & Tolerance — 4.7 µF nominal capacitance with tolerance of −20% to +20% (120 Hz, 20 °C).
• Rated Voltage & Polarization — Rated for 100 V DC and provided as a polarized aluminum electrolytic device for DC power circuits.
• Long Life at Elevated Temperature — Specified for 10,000 hours at +105 °C under rated conditions for 10–100 V parts, providing endurance for continuous operation in high‑temperature environments.
• Temperature Range — Operational from −40 °C to +105 °C to cover a broad range of ambient and enclosure temperatures.
• Radial Can Package — Radial lead mounting type in a can-style package for through‑hole PCB designs; lead spacing 2.0 mm with a tolerance of ±0.5 mm.
• Ripple & Leakage — Low‑frequency ripple current and high‑frequency ripple current ratings and specified leakage current (175.2 µA) to support steady DC filtering and decoupling in power supplies.
• RoHS Compliant — Conforms to RoHS requirements as noted in the product information.

Typical Applications

• LED Lighting Power Supplies — Suited for use in LED driver power stages where electrolytic bulk capacitance and endurance at elevated temperatures are needed.
• General‑Purpose Power Filtering — Provides DC smoothing and decoupling in compact, through‑hole power supply circuits and control electronics.
• Embedded Power Modules — Radial lead format and specified ripple/leakage behavior make it suitable for small power modules and PCB assemblies requiring axial clearance and through‑hole mounting.

Unique Advantages

• Endurance at High Temperature: Specified load life of 10,000 hours at +105 °C for 10–100 V ratings, supporting long‑term reliability in warm operating environments.
• Wide Operating Range: −40 °C to +105 °C rating enables use across industrial and commercial temperature conditions.
• Compact Radial Can: Radial lead mounting and small can package simplify PCB placement for through‑hole designs and legacy assemblies.
• Quantified Ripple and Leakage: Documented low‑ and high‑frequency ripple current ratings and a specified leakage current (175.2 µA) allow predictable performance in power filtering applications.
• Standards Compliance: RoHS compliance reduces material‑restriction risk for regulated markets.

Why Choose ULD2A4R7MDD?

The ULD2A4R7MDD brings a compact, radial can form factor together with Nichicon's ULD series long‑life characteristics to address general‑purpose DC filtering and LED power supply requirements. With a 100 V rating, polarized construction, and endurance specified for extended operation at elevated temperatures, it is well suited for designers needing reliable electrolytic bulk capacitance in through‑hole assemblies.

This part fits designs where predictable leakage, ripple handling, and temperature tolerance are required over extended operational periods, and where RoHS compliance is necessary for product acceptance.

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