ULD2E1R8MED

The ULD2E1R8MED is a radial-lead aluminum electrolytic capacitor from Nichicon's ULD series, designed for compact, long-life power applications. It provides 1.8 µF capacitance at a 250 V rated voltage in a miniature can-style radial package, and is suited for general-purpose electronics including power supplies for LED lighting.

Key Features

• Miniature radial can package — Compact dimensions (L: 1.1 × D: 0.63 cm) and radial lead mounting make it easy to integrate into space-constrained PCB layouts.
• High voltage rating — 250 V rated voltage for applications requiring elevated DC bus voltages.
• Long-life assurance (ULD series) — Part of the ULD long-life family; the series is specified for extended load life at elevated temperature.
• Wide operating temperature — Rated for −40 °C to +105 °C to support a broad range of environmental conditions.
• Polarized electrolytic — Polarized construction for DC decoupling and bulk energy functions; standard ±20% capacitance tolerance.
• Radial lead and lead spacing — 2.5 mm lead spacing with radial-lead mounting for through-hole assembly and robust mechanical retention.
• Ripple current characteristics — Specified ripple current: 33 mA at 120 Hz and 66 mA at 100 kHz to guide thermal and ripple planning in power designs.
• RoHS compliant — Conforms to RoHS directives (2011/65/EU, (EU)2015/863) for environmental compliance.

Typical Applications

• LED lighting power supplies — Provides compact bulk/decoupling capacitance for LED driver circuits where space and long life are important.
• General-purpose power electronics — Suited for DC link, decoupling, and filtering in small power supply and control modules.
• Compact industrial and consumer equipment — Fits into small-form-factor boards requiring a high-voltage electrolytic with radial mounting.

Unique Advantages

• Space-efficient form factor: Small can dimensions let designers preserve PCB real estate without sacrificing rated voltage.
• Designed for long service life: As a member of the ULD long-life family, it supports extended load-life operating profiles at elevated temperatures.
• High-voltage capability: A 250 V rating enables use on higher-voltage rails common in LED drivers and power supplies.
• Clear thermal envelope: Specified operating range of −40 °C to +105 °C helps simplify thermal budgeting for embedded applications.
• Specified ripple handling: Ripple current ratings at both low and high frequencies support informed design for ripple heating and lifetime estimation.
• Regulatory compliance: RoHS compliance supports deployment in regulated markets.

Why Choose ULD2E1R8MED?

ULD2E1R8MED combines a compact radial-can package with a 250 V rating and 1.8 µF capacitance to address space-constrained power designs that require elevated voltage handling and reliable long-life operation. Its radial-lead form factor and defined ripple current values make it straightforward to specify into LED driver modules, small power supplies, and general-purpose electronic systems.

As a part of Nichicon's ULD series, this capacitor aligns with applications where extended operational life at elevated temperatures and RoHS compliance are important considerations, helping design teams manage lifetime and regulatory needs while keeping PCB footprint minimal.

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