UPJ2A390MPD

The UPJ2A390MPD from Nichicon is a radial-lead aluminum electrolytic capacitor in the UPJ series, designed for low-impedance performance in switching power supply applications. It provides 39 µF capacitance at a 100 V rating in a compact φ8 × 20 mm can with polarized radial leads.

Engineered for general-purpose power filtering and ripple suppression, this part combines defined ripple-current capability, controlled loss (tanδ), and a wide operating temperature range to support reliable performance in power-conversion circuits.

Key Features

• Electrical Performance — 39 µF nominal capacitance with ±20% tolerance and a 100 V rated voltage delivers predictable charge storage for power applications.
• Low Loss / Stability — Specified tanδ of 0.08 (measured at 20°C, 120 Hz for 100 V) for stable dissipation characteristics under operating conditions.
• Ripple Current Capability — Low-frequency ripple current of 103.02 mA (120 Hz) and high-frequency ripple current of 202 mA (200 kHz) for handling AC stress in switching environments.
• Leakage Current — Measured leakage current of 117 µA, suitable for power-supply and smoothing applications where controlled leakage is required.
• Temperature and Endurance — Rated operating range from −55°C to +105°C; endurance specified as 3000 hours at +105°C for the φ8 case size.
• Compact Radial Package — φ8 × 20 mm can with 3.5 mm lead spacing (±0.5 mm) and radial lead mounting for through-hole PCB designs; available in bulk or bag packing.
• Compliance — RoHS compliant and produced by Nichicon; part is in mass production.

Typical Applications

• Switching Power Supplies — Low-impedance performance and defined ripple ratings make the UPJ2A390MPD well suited for input and output filtering in switched-mode power supplies.
• General-Purpose Power Filtering — Use for bulk smoothing and energy storage in general-purpose power circuits where a 100 V rating is required.
• Power Conversion and Ripple Suppression — Suitable for decoupling and ripple reduction in DC–DC converters and other power-conversion modules operating within the specified temperature and ripple limits.

Unique Advantages

• Low-impedance design: Series characterization highlights low impedance for switching power applications, enabling improved ripple handling and transient response.
• Defined ripple-current performance: Specified low- and high-frequency ripple current values allow accurate thermal and reliability planning for power circuits.
• High-temperature endurance: Rated for 3000 hours at +105°C in the φ8 case, supporting sustained operation in elevated-temperature environments.
• Compact radial form factor: φ8 × 20 mm can and 3.5 mm lead spacing provide a small footprint for through-hole layouts while maintaining serviceable capacitance and voltage rating.
• Controlled dissipation and leakage: Specified tanδ and leakage current figures make electrical behavior predictable for design validation and component selection.
• RoHS compliant and production-ready: Nichicon mass-production status ensures consistent supply and compliance with RoHS requirements.

Why Choose UPJ2A390MPD?

The UPJ2A390MPD is a purpose-driven radial aluminum electrolytic capacitor for designers needing a 100 V, 39 µF solution with low-impedance behavior and defined ripple handling. Its compact φ8 can, controlled dissipation (tanδ), and measured leakage current make it straightforward to integrate into switching-power and general-purpose power designs that operate up to +105°C.

Manufactured by Nichicon and offered in mass production with RoHS compliance, this part is suited for engineers seeking a reliable, well-specified through-hole capacitor for power-filtering, smoothing, and ripple-suppression roles where proven endurance and clear electrical characteristics are required.

Request a quote or contact sales to check availability and pricing for UPJ2A390MPD and to discuss volume supply or lead-time requirements.