UPJ0J391MPD

The UPJ0J391MPD is a Nichicon UPJ-series miniature aluminum electrolytic capacitor in a radial-lead can package. It provides 390 µF capacitance at a 6.3 V rating in a compact φ8 × 11.5 mm can with 3.5 mm lead spacing, designed for durable operation across a wide temperature range.

As part of Nichicon’s UPJ family—characterized for low impedance and suitability for switching power supplies—this device targets general-purpose power-filtering and decoupling applications where elevated ripple handling, long endurance, and through-hole mounting are required.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance with a 6.3 V nominal voltage and tolerance of −20% to +20% for predictable DC-link and bulk decoupling behavior.
• Low Impedance Design — UPJ series characteristic of low impedance specifically noted for switching power supply use, helping reduce ripple and voltage variation under dynamic loads.
• Ripple Current Performance — Rated ripple current of 207 mA at 120 Hz and 345 mA at 200 kHz to support both low- and high-frequency ripple environments.
• High Reliability Endurance — Rated for 3000 hours at +105°C for φ8 case size, providing long-term stability in elevated-temperature applications.
• Operating Temperature Range — −55°C to +105°C, suitable for a wide range of ambient conditions.
• Leakage and Loss Characteristics — Measured leakage current of 73.71 µA and tan δ (DF) of 0.22 at 20°C, 120 Hz, supporting controlled loss and standby current in designs.
• Compact Radial Package — φ8 × 11.5 mm can with 3.5 mm lead spacing and lead diameter 0.6 mm, available in bulk/no-terminal-forming bag packing for through-hole assembly.
• RoHS Compliant — Conforms to RoHS directive requirements for lead-free manufacturing and environmental compliance.

Typical Applications

• Switching Power Supplies — Bulk and output filtering where the UPJ series’ low impedance and ripple current capability reduce voltage ripple and improve regulator stability.
• Industrial Power Modules — Decoupling and energy storage on power rails in compact, through-hole boards that require robust endurance at elevated temperatures.
• Consumer Electronics Power Rails — Local bulk capacitance for DC-link smoothing and transient handling in compact assemblies using radial-lead components.

Unique Advantages

• Designed for Switching Environments: Series low-impedance characteristics align with switching power supply requirements, improving ripple attenuation where it matters.
• Compact, Through-Hole Form Factor: φ8 can and 3.5 mm lead spacing deliver significant capacitance in a small footprint for PCB layouts that prefer radial components.
• High Ripple Handling: Specified ripple currents at both 120 Hz and 200 kHz support mixed-frequency power environments without immediate performance degradation.
• Extended Endurance at Elevated Temperature: 3000 hours endurance at +105°C for the φ8 case size provides predictable life performance in high-temperature installations.
• Controlled Leakage and Loss: Low measured leakage current and specified tan δ enable predictable standby current and loss budgeting in power designs.
• RoHS Compliant: Meets environmental requirements for lead-free production and deployment.

Why Choose UPJ0J391MPD?

UPJ0J391MPD combines 390 µF bulk capacitance with a 6.3 V rating in a compact φ8 radial can, delivering the durability and ripple capability expected from the Nichicon UPJ series. Its low-impedance characteristics and rated ripple currents make it a practical choice for switching power supplies and other power-rail smoothing tasks where through-hole mounting and elevated-temperature endurance are required.

This part suits designers and purchasers seeking a reliable, compact electrolytic solution for general-purpose power filtering in industrial and consumer products. With defined leakage, loss, and endurance specifications, UPJ0J391MPD supports straightforward design trade-offs and predictable long-term operation.

Request a quote or contact sales to discuss availability, volume pricing, and lead times for UPJ0J391MPD.