UPJ1H391MHD

The UPJ1H391MHD from Nichicon is an aluminum electrolytic, radial-lead capacitor in the UPJ series designed for low-impedance applications. It delivers 390 µF at 50 V with a polarized can-style package sized φ12.5 × 25 mm (L).

Engineered for general-purpose use and specifically noted for suitability in switching power supplies, this module combines high ripple-handling capability, long endurance at elevated temperature, and a wide operating temperature range for reliable power supply performance.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance at 50 V with ±20% tolerance (measured at 120 Hz, 20°C).
• Low Loss / Low Impedance — tanδ 0.10 specified at 20°C and 120 Hz, supporting lower ESR behavior in the UPJ series.
• High Ripple Current Handling — 672 mA at 120 Hz (low frequency) and 1.12 A at 200 kHz (high frequency) for demanding ripple conditions.
• Leakage Current — 585 µA specified after application of rated voltage, enabling predictable standby and leakage profiles.
• Long Endurance at Elevated Temperature — 5000 hours load life at +105°C for the specified case size, demonstrating extended reliability under thermal stress.
• Package & Mounting — Radial, can-style body with lead spacing 5.0 mm (±0.5 mm) and radial-lead mounting type; available as bulk (no terminal forming) or bag packing.
• Environmental Compliance — RoHS compliant.

Typical Applications

• Switching power supplies — UPJ series is explicitly noted as ideally suited for switching power supply applications where low impedance is required.
• General-purpose electronic circuits — Specified for general-purpose use, suitable wherever a polarized aluminum electrolytic is required.
• Through-hole radial assemblies — Radial lead package and standard 5 mm lead spacing make this part appropriate for through-hole board layouts and assemblies.
• High-temperature endurance applications — 5000-hour load life at +105°C supports designs that require extended operation at elevated temperatures.

Unique Advantages

• Measurable low-loss performance: tanδ 0.10 at 20°C/120 Hz gives a clear, verifiable indicator of low dissipation for power applications.
• Dual-frequency ripple capability: Rated ripple currents specified at both 120 Hz and 200 kHz (672 mA and 1.12 A) to address low- and high-frequency ripple environments.
• Long high-temperature life: 5000 hours endurance at +105°C for the case size supports sustained reliability under thermal stress.
• Predictable leakage: 585 µA leakage current rating aids in power budgeting and standby current calculations.
• Through-hole form factor: Radial can package (φ12.5 × 25 mm) with 5.0 mm lead spacing simplifies PCB layout for legacy and industrial assemblies.
• Regulatory compliance: RoHS status provided to support environmental and regulatory planning.

Why Choose UPJ1H391MHD?

UPJ1H391MHD positions itself as a reliable, specification-driven choice for designers needing a 390 µF, 50 V aluminum electrolytic with demonstrable low-loss behavior, defined ripple capability, and long-term endurance at elevated temperature. The radial-lead can package and standard lead spacing make it straightforward to integrate into through-hole power assemblies and general-purpose boards.

This part suits design teams focused on predictable electrical performance and long operational life in thermal environments, especially in switching power supply roles and general-purpose power smoothing applications. Backed by Nichicon’s UPJ series specifications and RoHS compliance, it provides a clear, verifiable component selection for procurement and engineering teams.

If you would like pricing, availability, or a formal quote for UPJ1H391MHD, please submit a request or inquiry to our sales team. We will provide lead-time and ordering information promptly.