UPJ1E331MPD

The UPJ1E331MPD from Nichicon is a miniature, high-reliability aluminum electrolytic capacitor in the UPJ series. It is a radial-lead, polarized capacitor rated 330 µF at 25 V with a compact φ8 × 20 mm can and 3.5 mm lead spacing.

Engineered for low impedance and durability, this part targets general-purpose power applications and switching power supplies that require stable capacitance, controlled loss characteristics, and extended high-temperature endurance.

Key Features

• Electrical Performance — 330 µF capacitance at 25 V with ±20% tolerance; tanδ (DF) 0.14 measured at 20°C, 120 Hz for stable loss characteristics.
• Ripple Current Capability — Low-frequency ripple current 353.8 mA (120 Hz) and high-frequency ripple current 610 mA (200 kHz) to support power filtering under dynamic loads.
• Leakage Current — Specified leakage current 247.5 µA, measured under rated conditions for predictable bias behavior.
• High-Temperature Endurance — Rated life 3000 hours at 105°C (φ8 case), providing extended reliability in elevated-temperature environments.
• Compact Radial Package — φ8 × 20 mm can with 3.5 mm lead spacing (±0.5 mm) and radial lead mounting for through-hole assemblies where board space is constrained.
• Packaging & Production — Available in bulk (no terminal forming) or bag packing; product is in mass production and RoHS compliant.

Typical Applications

• Switching Power Supplies — Low impedance and series positioning make the UPJ1E331MPD suitable for output filtering and smoothing in switching regulators.
• General-Purpose Power Filtering — Used where bulk capacitance and controlled leakage are required for DC power rails and decoupling.
• Compact Through-Hole Designs — Radial-lead, small-diameter package for space-conscious assemblies that still require electrolytic capacitance and endurance.

Unique Advantages

• Low Impedance Design — Series specification highlights low impedance behavior, improving ripple attenuation in power circuits.
• Extended High-Temperature Life — 3000-hour endurance at 105°C for the φ8 case provides predictable long-term performance in hot environments.
• Dual-Frequency Ripple Handling — Published ripple current ratings at 120 Hz and 200 kHz let designers evaluate performance across low and high ripple frequency ranges.
• Compact Form Factor — φ8 × 20 mm can and 3.5 mm lead spacing offer a small footprint for through-hole designs without sacrificing capacitance.
• Production-Ready — Mass production status and standard bulk/bag packing options simplify procurement and assembly planning.
• Standards Compliance — RoHS compliant to meet regulatory requirements for lead-free electronic assemblies.

Why Choose UPJ1E331MPD?

UPJ1E331MPD combines the UPJ series' low-impedance, high-reliability architecture with a compact radial can and specified ripple, leakage, and loss characteristics. Its 330 µF / 25 V rating, along with 3.5 mm lead spacing and φ8 × 20 mm size, makes it appropriate for designers balancing board-space constraints and power filtering requirements.

This part is well suited to engineers specifying capacitors for switching power supplies and general-purpose power circuits who require defined electrical parameters, extended high-temperature endurance, and RoHS compliance backed by Nichicon's UPJ series production support.

Request a quote or contact sales to discuss availability, volume pricing, and lead times for UPJ1E331MPD.