UPJ1K391MHD6

The UPJ1K391MHD6 is a radial-lead aluminum electrolytic capacitor from Nichicon's UPJ series, designed for low-impedance performance in power electronics. It provides 390 µF capacitance at a rated voltage of 80 V, packaged in a compact φ18 × 20 mm can with 7.5 mm lead spacing.

Targeted for general-purpose and power-supply applications, this part combines high ripple-handling capability and long life — specified for 5,000 hours at 105°C — for reliable DC filtering and energy-storage tasks in switching power designs.

Key Features

• Electrical performance — 390 µF capacitance with tolerance −20% to +20%; rated voltage 80 V; polarized electrolytic construction for DC applications.
• Low dissipation factor — tan δ = 0.08 measured at 20°C, 120 Hz and 80 V, supporting lower impedance in filtering and decoupling roles.
• Ripple-current capability — Low-frequency ripple current 544.8 mA (120 Hz) and high-frequency ripple current 908 mA (200 kHz), enabling effective smoothing under dynamic loads.
• Leakage current — Specified leakage current of 936 µA, meeting typical electrolytic leakage expectations for this capacitance and voltage class.
• Long life and temperature endurance — Rated for 5,000 hours of load life at 105°C; operating temperature range −55°C to 105°C for broad environmental tolerance.
• Radial package and mounting — φ18 mm diameter, 20 mm length can with 7.5 mm lead spacing (±0.5 mm); supplied bulk or bag packed for through-hole assembly.
• Compliance and production status — RoHS compliant and listed as mass production, part of Nichicon’s UPJ low-impedance series optimized for switching supplies.

Typical Applications

• Switching Power Supplies — Low-impedance design and specified ripple-current ratings make this capacitor suitable for smoothing and output filtering in switch-mode power supplies.
• Power Conversion Modules — Useful for DC link and decoupling applications where 80 V rated capacitance and high ripple capability are required.
• Industrial Power Electronics — Long endurance at elevated temperature and a wide operating range (−55°C to 105°C) support reliable operation in industrial assemblies.
• General Purpose Filtering — Radial-lead form factor and general-purpose designation make it appropriate for through-hole designs needing compact bulk capacitance.

Unique Advantages

• Low-impedance operation: Specified tan δ of 0.08 and part of the UPJ low-impedance series reduce AC losses and improve filtering performance in high-frequency environments.
• High ripple handling: Distinct ripple-current ratings at 120 Hz and 200 kHz (544.8 mA and 908 mA) provide measurable guidance for thermal and ripple budgeting in power designs.
• Proven high-temperature life: 5,000-hour load life at 105°C supports longer service intervals and predictable end-of-life behavior in elevated-temperature systems.
• Compact radial package: φ18 × 20 mm can with 7.5 mm lead spacing offers a compact through-hole solution for board-level bulk capacitance.
• Manufacturer consistency: Part of Nichicon’s UPJ series and available in mass production, facilitating supply planning for production builds.

Why Choose UPJ1K391MHD6?

The UPJ1K391MHD6 delivers a balance of capacitance, voltage rating, and low-impedance behavior tailored for switching power and general-purpose filtering tasks. Its 80 V rating, measurable ripple-current specs, and long life at 105°C make it well suited to designs that require reliable DC smoothing in through-hole assemblies.

As a Nichicon UPJ-series part, it provides a clear specification set for engineers and procurement: defined electrical performance (tan δ, leakage, ripple currents), environmental tolerance (−55°C to 105°C), and production availability for consistent BOM planning.

Request a quote or contact sales to discuss availability, lead times, and pricing for UPJ1K391MHD6.