UPJ1A391MPD6

The UPJ1A391MPD6 is a miniature, high-reliability aluminum electrolytic capacitor from Nichicon's UPJ series, configured as a radial-lead can. It delivers 390 µF capacitance at a 10 V rated voltage with a compact φ10 × 12.5 mm can size and 5 mm lead spacing.

Designed for power-oriented, general-purpose applications—especially switching power supplies—the part combines low impedance characteristics, elevated ripple handling, and long-term endurance to support demanding power-filtering and decoupling roles in compact designs.

Key Features

• Capacitance & Voltage: 390 µF nominal capacitance with a 10 V rated voltage and tolerance of −20% to +20% for predictable bulk energy storage.
• Low Loss / Dissipation Factor: tanδ = 0.19 measured at 20°C, 120 Hz, supporting efficient AC performance in power circuits.
• High Ripple Current Capacity: Rated low-frequency ripple current of 258 mA (120 Hz) and high-frequency ripple current of 430 mA (200 kHz) to handle switching and ripple loads.
• Leakage Current: Specified leakage current of 117 µA after application of rated voltage, facilitating stable bias conditions.
• Long Endurance: Designed for 5000 hours load life at +105°C (applicable for the φ10 case), providing extended operational reliability in high-temperature environments.
• Compact Radial Package: φ10 × 12.5 mm can, radial lead mounting with 5 mm lead spacing (±0.5 mm), ideal for through-hole PCB assemblies where space is constrained.
• Wide Operating Temperature: Rated for −55°C to +105°C to cover a broad range of environmental conditions.
• RoHS Compliant: Meets RoHS requirements for environmental compliance.
• Packaging Options: Available in bulk (no terminal forming) or bag packing to support different assembly and stocking workflows.

Typical Applications

• Switching Power Supplies: Low impedance and specified high-frequency ripple current make it suitable for output filtering and bulk decoupling in switch-mode power supplies.
• Power Filtering & Decoupling: Compact capacitance for smoothing and decoupling power rails in compact power modules and control boards.
• Industrial Control Electronics: Reliable endurance at +105°C and broad temperature range support use in industrial power and control circuitry requiring long life.
• Consumer Power Modules: Small radial footprint and robust ripple handling suit power subsystems in consumer electronics where space and thermal stress are considerations.

Unique Advantages

• Low-impedance performance: Designed within the UPJ series for low impedance, enabling more effective smoothing and transient response in switching environments.
• Elevated ripple capability: Defined ripple current ratings at both low and high frequencies allow designers to size capacitors confidently for real switching loads.
• Extended high-temperature life: 5000-hour endurance at +105°C for the φ10 case size supports long-term reliability in thermally demanding applications.
• Compact through-hole form factor: φ10 × 12.5 mm radial can with 5 mm lead spacing provides a space-efficient, serviceable solution for PCB layouts that prefer through-hole components.
• Predictable electrical behavior: Specified tanδ and leakage current values permit accurate modeling of loss and bias behavior in power designs.
• RoHS compliance: Environmentally compliant material choices simplify regulatory considerations for product assemblies.

Why Choose UPJ1A391MPD6?

The UPJ1A391MPD6 positions itself as a compact, reliable electrolytic solution for engineers needing robust capacitance in a small radial can. Its combination of 390 µF capacitance, 10 V rating, defined dissipation factor, and dual-frequency ripple ratings supports efficient power filtering and decoupling in switching power designs and general-purpose power electronics.

With a wide −55°C to +105°C operating range, RoHS compliance, and 5000-hour endurance at +105°C for the φ10 case, this part suits designers focused on long-term stability and predictable performance in compact through-hole implementations.

Request a quote or contact sales to discuss volume pricing, lead-time, and packaging options for UPJ1A391MPD6.