UPJ1E391MHD6

The UPJ1E391MHD6 is a miniature, radial-lead aluminum electrolytic capacitor from Nichicon’s UPJ series. It delivers 390 µF at 25 V in a compact φ12.5 × 15 mm can with 5 mm lead spacing, engineered for general-purpose power applications.

Designed for low impedance and high reliability, this capacitor is especially well suited for switching power supplies and other power-filtering roles that demand elevated ripple handling and extended lifetime at high temperature.

Key Features

• Capacitance & Voltage: 390 µF rated capacitance with a 25 V rated voltage and ±20% tolerance for bulk energy storage and filtering.
• Low Impedance Design: UPJ series low-impedance construction with a specified tangent of loss angle (tan δ) of 0.14 measured at 20°C, 120 Hz, supporting efficient AC ripple handling.
• High Ripple Current Capability: Rated low-frequency ripple current of 432 mA at 120 Hz and high-frequency ripple current of 720 mA at 200 kHz for demanding switching environments.
• Leakage Current: Specified leakage current of 292.5 µA after voltage application at 20°C.
• Extended Endurance at Elevated Temperature: Long-life specification of 5000 hours at 105°C, supporting reliable operation under sustained thermal stress.
• Wide Operating Temperature Range: −55°C to +105°C, suitable for broad environmental conditions.
• Radial Lead, Compact Package: φ12.5 × 15 mm can (L: 1.5 cm × D: 1.25 cm) with 5.0 mm lead spacing (±0.5 mm tolerance) for through‑hole mounting and tight board layouts.
• Packaging and Compliance: Available in bulk (no terminal forming) or bag packing; RoHS compliant.

Typical Applications

• Switching Power Supplies: Bulk filtering and ripple smoothing in switching regulators and DC–DC converters where low impedance and high ripple capability are required.
• General-Purpose Power Filtering: Decoupling and energy storage in general electronic equipment and power modules.
• Embedded Systems and Industrial Electronics: Local power reservoir and transient suppression in compact, through-hole designs operating across −55°C to +105°C.

Unique Advantages

• Reliable High‑Temperature Endurance: 5000 hours at 105°C supports long-term operation in thermally demanding designs.
• High Ripple Handling: Specified ripple currents at both low and high frequencies accommodate switching and high-frequency power stages.
• Compact Footprint: Small φ12.5 × 15 mm can with 5 mm lead spacing enables dense board placement without sacrificing capacitance.
• Measured Performance Parameters: Specified tan δ value (0.14 at 20°C, 120 Hz) and defined leakage current offer predictable AC and DC behavior for design margin and simulation.
• Through-Hole Robustness: Radial lead format simplifies mounting and mechanical stability for rugged or serviceable applications.
• RoHS Compliance: Environmental compliance for assemblies targeting restricted‑substance requirements.

Why Choose UPJ1E391MHD6?

UPJ1E391MHD6 combines UPJ-series low-impedance construction with a compact radial-lead package, delivering 390 µF at 25 V with clear, component-level specifications for ripple, leakage, and long-term endurance. It fits designs that need reliable bulk capacitance in constrained PCB area while maintaining predictable performance under elevated temperature and ripple stress.

This part is well suited to engineers and procurement teams specifying capacitors for switching power supplies, general-purpose power filtering, and embedded systems where long life, consistent electrical characteristics, and through-hole mounting are important considerations.

Request a quote or submit an inquiry to receive pricing and availability for UPJ1E391MHD6 and assistance with ordering and lead-time information.