ULD1A331MPD

The ULD1A331MPD is a radial-lead aluminum electrolytic capacitor from Nichicon's ULD series, offering a 330 µF capacitance at a 10 V rating. It is a miniature, long-life design intended for general-purpose electronic applications and is noted in the ULD series documentation as suited for power supplies for LED lighting.

Engineered for compact board-level installations, this polarized capacitor combines a small φ8 × 11.5 mm can, radial leads with 3.5 mm spacing, and rated performance across a -40 °C to +105 °C operating range.

Key Features

• Capacitance & Voltage — 330 µF capacitance rated at 10 V for bulk energy storage and smoothing in low-voltage circuits.
• Long-Life Endurance — Rated life of 10,000 hours at 105 °C (load life), supporting sustained high-temperature operation.
• Compact Radial Can — Miniature φ8 × 11.5 mm package with 3.5 mm lead spacing (±0.5 mm), designed for space-constrained, through-hole assemblies.
• Electrical Loss and Leakage — Tangent of loss angle (tan δ) max 0.45 (measured at 20 °C, 120 Hz, 10 V) and leakage current specified at 33 µA, enabling predictable ESR-related behavior and low standby leakage.
• Ripple Current Capability — Low-frequency ripple current 231 mA at 120 Hz and high-frequency ripple current 330 mA at 100 kHz, useful for power-supply ripple handling across frequencies.
• Polarized, General-Purpose Usage — Polarized aluminum electrolytic intended for general-purpose circuits where a polarized electrolytic is required.
• Packaging & Availability — Available in bulk (no terminal forming) and bag packing; product is in mass production and RoHS compliant.

Typical Applications

• LED lighting power supplies — Provides bulk smoothing and energy storage in compact LED driver circuits, consistent with ULD-series suitability for LED power supplies.
• General-purpose electronic equipment — Used where a compact, polarized electrolytic is needed for filtering or energy storage in low-voltage designs.
• Compact through-hole assemblies — Radial-lead form and small can size fit space-limited PCBs and prototyping setups that require through-hole components.

Unique Advantages

• High-temperature endurance: Specified 10,000 hours at 105 °C, providing predictable lifetime performance in thermally demanding environments.
• Compact footprint: φ8 × 11.5 mm can and 3.5 mm lead spacing make it suitable for densely populated boards without sacrificing capacitance.
• Measured electrical stability: Defined tan δ and leakage values (0.45 and 33 µA respectively) allow accurate design margining for ESR and standby current.
• Broad ripple handling: Specified ripple current at both low (231 mA at 120 Hz) and high frequency (330 mA at 100 kHz) supports a range of switching and linear power stages.
• Production-ready supply: Mass-production status and common bulk/bag packing simplify BOM sourcing and assembly planning.
• RoHS compliant: Conforms to RoHS requirements for lead-free manufacturing environments.

Why Choose ULD1A331MPD?

The ULD1A331MPD offers a balanced combination of capacitance density, compact radial packaging, and defined high-temperature endurance suitable for designers needing reliable electrolytic performance in tight spaces. Its specified ripple current ratings and controlled leakage and loss-angle parameters enable confident use in low-voltage power rails and compact power supplies.

This part is well suited to engineers and procurement teams building general-purpose electronics or compact power modules—especially where space constraints and long-term thermal endurance are important. With RoHS compliance and mass-production availability, it supports consistent supply and straightforward integration into production designs.

Request a quote or contact sales to obtain pricing, lead time, and packaging details for ULD1A331MPD.