UPJ1V391MHD6

The UPJ1V391MHD6 is a miniature, high-reliability aluminum electrolytic capacitor in Nichicon’s UPJ series. It is a polarized, radial-lead can designed for general-purpose power applications and is explicitly suited for use in switching power supplies due to its low-impedance characteristics.

This part combines a 390 µF capacitance at a 35 V rating with a compact φ12.5 × 15 mm package, a wide operating temperature range of -55 °C to 105 °C, and a rated load life of 5000 hours at 105 °C, making it appropriate for board-level power filtering where long life and stable performance are required.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with a 35 V rated voltage and ±20% capacitance tolerance at 20 °C, 120 Hz.
• Low Loss / Low Impedance — Tangent of loss angle (tan δ) of 0.12 measured at 20 °C, 120 Hz, supporting low-impedance performance for switching supplies.
• Ripple Current Performance — Low-frequency ripple current of 495 mA (120 Hz) and high-frequency ripple current of 825 mA (200 kHz), suitable for a range of supply ripple conditions.
• Leakage Current — Specified leakage current of 409.5 μA following rated-voltage application conditions.
• High Temperature Endurance — Load life rated at 5000 hours at 105 °C, supporting long-term reliability under elevated-temperature operation.
• Compact Radial Package — φ12.5 mm diameter × 15 mm length can with 5.0 mm lead spacing (±0.5 mm), radial-lead mounting for through-hole assemblies.
• Packaging and Compliance — Supplied in bulk/no terminal forming or bag packing; RoHS-compliant.

Typical Applications

• Switching Power Supplies — Designed for low-impedance operation, making it suitable for filtering and energy storage in switching regulator outputs.
• General-Purpose Power Electronics — Polarized radial-lead capacitor for a variety of general-purpose board-level power applications.
• Through-Hole Power Assemblies — Radial-lead format and compact φ12.5 × 15 mm size fit through-hole power modules and assemblies requiring reliable electrolytic capacitance.

Unique Advantages

• Low-impedance behavior for switching applications: tan δ of 0.12 (20 °C, 120 Hz) supports reduced AC losses in switching environments.
• Dual-frequency ripple handling: Specified ripple currents at 120 Hz (495 mA) and 200 kHz (825 mA) provide performance data across common power-supply frequencies.
• Extended high-temperature life: Rated 5000 hours at 105 °C for designs that require long-term stability under elevated temperature stress.
• Compact, board-friendly footprint: φ12.5 mm × 15 mm can and 5.0 mm lead spacing simplify placement in tight through-hole layouts.
• Regulatory readiness: RoHS-compliant construction for electronics requiring restricted-substance conformance.

Why Choose UPJ1V391MHD6?

UPJ1V391MHD6 delivers a combination of measurable low-impedance performance, specified ripple current capability, and extended endurance at elevated temperature, packaged in a compact radial-lead can. It is well suited to engineers specifying polarized electrolytic capacitance for switching power supplies and other general-purpose power applications where validated electrical parameters and predictable life are important.

This Nichicon UPJ-series part provides designers with clear, testable specifications for capacitance, loss (tan δ), leakage, ripple currents, and thermal endurance—facilitating reliable BOM decisions for production and long-term deployments.

If you need pricing, availability, or a formal quote for UPJ1V391MHD6, please request a quote or contact sales to discuss lead times and quantity options.