UPJ1A391MPD

The UPJ1A391MPD is a radial-lead aluminum electrolytic capacitor from Nichicon's UPJ series designed for low-impedance, general-purpose power applications. It delivers 390 µF at a 10 V rating in a compact φ8 × 15 mm can optimized for space-constrained circuits.

Engineered for power-focused use, this part is suited to switching power supplies and other general-purpose electronic designs that require robust ripple handling, a wide operating temperature range, and long endurance at elevated temperature.

Key Features

• Capacitance and Voltage — 390 µF rated capacitance at 10 V provides bulk energy storage for decoupling and smoothing in low-voltage power rails.
• Low impedance performance — Specified tangent of loss angle (tanδ) of 0.19 measured at 20°C, 120 Hz, supporting stable AC performance.
• Ripple current capability — 258 mA at 120 Hz (low frequency) and 430 mA at 1 kHz (high frequency) to handle steady-state and switching ripple in power circuits.
• Leakage current — Measured leakage current of 117 µA for predictable standby and bias characteristics.
• High-temperature endurance — Rated life of 3000 hours at 105°C (φ8 case), supporting reliable operation under sustained thermal stress.
• Wide temperature range — Operates from −55°C to +105°C to cover harsh ambient conditions and temperature cycling.
• Compact radial package — φ8 × 15 mm can with 3.5 mm lead spacing (±0.5 mm tolerance) in a radial-lead form factor for through-hole assemblies; available in bulk or bag packing.
• RoHS compliant — Conforms to RoHS requirements for environmental compliance.

Typical Applications

• Switching power supplies — Low-impedance behavior and specified ripple current make the UPJ1A391MPD suitable for output filtering and smoothing in switching regulators.
• General-purpose electronic circuits — Provides bulk capacitance and decoupling in consumer, industrial, and general electronic assemblies where a 10 V rated polar capacitor is required.
• Prototyping and production assemblies — Radial lead form and bulk/bag packaging accommodate through-hole prototypes and wave/manual assembly processes.

Unique Advantages

• Targeted power handling: Specified low- and high-frequency ripple currents support mixed-frequency switching environments.
• Thermal endurance: 3000-hour rating at 105°C (φ8) provides a defined reliability envelope for high-temperature applications.
• Predictable electrical performance: Documented tanδ and leakage current values enable accurate circuit modeling and lifetime estimates.
• Space-efficient footprint: φ8 × 15 mm can offers substantial capacitance in a compact radial package for constrained PCB layouts.
• Clear procurement options: Available in bulk and bag packing to suit prototype runs and volume production needs.
• Regulatory compliance: RoHS conformity supports inclusion in designs targeting global markets with restricted substances requirements.

Why Choose UPJ1A391MPD?

The UPJ1A391MPD combines 390 µF of capacitance with a 10 V rating in a low-impedance UPJ series platform optimized for power applications. Its documented ripple current capability, measured tanδ, and defined leakage current give designers the data needed to size and predict performance in switching power supplies and general-purpose power rails.

This part is well suited to engineers and purchasers seeking a compact, through-hole electrolytic capacitor with clear endurance data (3000 hours at 105°C for the φ8 case), a wide operating temperature range, and straightforward packaging options for both prototyping and production.

If you would like pricing, lead-time information, or a formal quote for UPJ1A391MPD, please request a quote or contact the supplier’s sales channel with your quantity and delivery requirements.