ULD2W470MHD

The ULD2W470MHD is a Nichicon ULD series miniature aluminum electrolytic capacitor specified at 47 µF and 450 V. It is a radial-lead, polarized can designed for long-life operation and high-voltage applications.

Engineered for power electronics, the part is suited to general-purpose power-supply use and is explicitly recommended for LED lighting power supplies. Key value propositions include long operational life at elevated temperature and rugged ripple-current capability across low and high frequencies.

Key Features

• Capacitance & Voltage — 47 µF nominal capacitance with a 450 V rated voltage for high-voltage smoothing and energy storage in power circuits.
• Long Life at Elevated Temperature — Rated for 20000 hours at +105 °C per the ULD series endurance specification, supporting sustained high-temperature operation.
• Wide Operating Temperature Range — Specified for −40 °C to +105 °C to accommodate a broad range of operating environments.
• Radial Lead, Compact Can — Radial lead mounting with a 7.5 mm lead spacing and a compact footprint (L: 2.5 × D: 1.8 cm) for through-hole board layouts.
• Ripple Current Performance — Rated ripple current of 480 mA at 120 Hz and 864 mA at 100 kHz to support filtering and ripple absorption in switching supplies.
• Tolerance & Polarization — Capacitance tolerance ±20% (at 120 Hz, 20 °C); polarized construction for DC applications.
• Regulatory Compliance — RoHS compliant in accordance with applicable directives indicated for the ULD series.

Typical Applications

• LED Lighting Power Supplies — Supports smoothing and energy buffering in LED driver circuits where long life at elevated temperature is required.
• General-Purpose Power Supplies — Used for bulk filtering and ripple reduction in high-voltage DC rails and power modules.
• Industrial and Commercial Electronics — Suitable for designs needing a compact, high-voltage electrolytic with extended high-temperature endurance.

Unique Advantages

• Extended High‑Temperature Endurance: 20000‑hour life at +105 °C reduces replacement frequency and supports longer product lifecycles in warm environments.
• High Voltage Capability: 450 V rating enables use in high-voltage DC applications without series stacking.
• Compact Radial Can: Small footprint (L: 2.5 × D: 1.8 cm) and radial-lead mounting ease layout integration on through-hole PCBs.
• Broad Ripple-Handling: Ripple current specifications at both 120 Hz and 100 kHz provide predictable performance across power-frequency and switching-frequency domains.
• Wide Operating Range: −40 °C to +105 °C specification supports deployment in varied ambient conditions.
• Standards Compliance: RoHS compliance aligns with regulatory requirements for electronics manufacturing and supply chains.

Why Choose ULD2W470MHD?

ULD2W470MHD combines high-voltage capability with an extended high-temperature lifetime from the Nichicon ULD family, making it a practical choice for engineers designing power supplies and LED drivers that require reliable long-term operation. Its compact radial-can format and defined ripple-current ratings allow predictable integration into through-hole power designs.

This part is appropriate for projects that prioritize durability under elevated temperature, consistent ripple performance, and RoHS compliance. As a member of the Nichicon ULD series, it follows series-level specifications for endurance and electrical characteristics documented in the product literature.

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