UPJ1K390MPD

The UPJ1K390MPD from Nichicon is a radial-lead aluminum electrolytic capacitor in the UPJ series designed for low-impedance power applications. It delivers 39 µF capacitance at an 80 V rating with a compact φ8 × 15 mm can and 3.5 mm lead spacing.

Engineered for switching power supplies and general-purpose power filtering, this capacitor combines a wide operating temperature range (-55°C to 105°C) with extended endurance under load (3000 hours at 105°C for the φ8 size), supporting reliable, long-term operation in demanding power circuitry.

Key Features

• Capacitance & Voltage — 39 µF rated capacitance at 80 V for bulk energy storage and decoupling in power rails.
• Low Dissipation Factor — tanδ of 0.08 measured at 20°C and 120 Hz (at 80 V), supporting low-loss operation.
• High Ripple Capability — specified ripple currents of 79.56 mA at 120 Hz and 156 mA at 200 kHz to handle both low- and high-frequency ripple components.
• Leakage Current — leakage current specified at 93.6 µA, enabling predictable standby and bias behavior.
• Temperature & Endurance — rated for -55°C to +105°C with a load-life endurance of 3000 hours at 105°C for the φ8 case.
• Package & Mounting — radial lead, φ8 can (size φ8 × 15 mm) with 3.5 mm lead spacing (±0.5 mm), supplied in bulk or bag packing for through-hole assembly.
• RoHS Compliant — meets RoHS directive requirements as stated for the UPJ series.

Typical Applications

• Switching Power Supplies — low impedance and defined ripple ratings make it suitable for output filtering and bulk decoupling in switch-mode power supplies.
• Power Conversion Modules — 80 V rating and high-frequency ripple capability support DC–DC converters and power regulators.
• Industrial Control Electronics — wide temperature range and 3000-hour endurance at 105°C support reliable operation in industrial environments.
• General-Purpose Power Filtering — compact radial package for through-hole designs requiring bulk capacitance and stable leakage characteristics.

Unique Advantages

• Low-Impedance Performance: The UPJ series is specified for low impedance, and this part’s tanδ of 0.08 at 80 V and 120 Hz indicates low loss for improved filtering efficiency.
• Designed for Ripple-Heavy Environments: Specified ripple currents at both 120 Hz and 200 kHz let designers account for low- and high-frequency ripple when sizing capacitors.
• Compact, Through-Hole Form Factor: φ8 × 15 mm can with 3.5 mm lead spacing provides a space-efficient radial solution for PCB power sections.
• Extended Elevated-Temperature Endurance: Rated to withstand 3000 hours at 105°C for the φ8 case, supporting long-term stability in high-temperature applications.
• Predictable Leakage Behavior: Leakage current specified at 93.6 µA enables accurate power-loss and bias current calculations.
• Regulatory Compliance: RoHS compliance simplifies use in regions and products requiring restriction of hazardous substances.

Why Choose UPJ1K390MPD?

UPJ1K390MPD positions itself as a compact, reliable aluminum electrolytic solution for designers building switching power supplies, converters, and general-purpose power-filtering stages. With an 80 V rating, low dissipation factor, defined ripple-current specifications, and 3000-hour endurance at 105°C for its φ8 case, it provides predictable performance for temperature- and ripple-stressed power designs.

The Nichicon UPJ series backing ensures consistency in manufacturing and material choices, making this part suitable for engineers and procurement teams seeking a proven, RoHS-compliant radial-lead capacitor for through-hole assemblies and industrial-grade power electronics.

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