UPJ1E391MPD

The UPJ1E391MPD is a radial-lead aluminum electrolytic capacitor from Nichicon’s UPJ series, designed for low-impedance power applications. With a 390 µF capacitance at 25 V and a compact φ10×20L package, it targets switching power supplies and general-purpose power filtering where stable capacitance, ripple handling and long-life performance are required.

Key Features

• Capacitance & Voltage: 390 µF rated capacitance at 25 V with ±20% tolerance (120 Hz, 20°C), suitable for bulk decoupling and energy storage in power rails.
• Low Impedance Design: Part of Nichicon’s UPJ series specified for low impedance, making it suitable for switching power supplies and high-frequency filtering.
• High Ripple Current Capability: Rated ripple currents of 462 mA at 120 Hz (low frequency) and 770 mA at 200 kHz (high frequency) to support sustained AC superposition on DC bias.
• Long Endurance at Elevated Temperature: Load life of 5000 hours at +105°C for the φ10 case per series endurance specification, delivering extended service life in hot operating environments.
• Low Loss (tan δ): tan δ of 0.14 measured at 20°C, 120 Hz for the 25 V rating, indicating controlled dissipation for power applications.
• Leakage Current: Specified leakage current of 292.5 µA after 1 minute at rated voltage and 20°C, consistent with electrolytic performance expectations.
• Compact Radial Can Package: φ10×20L metal can with radial leads, 5.0 mm lead spacing (±0.5 mm) and bulk/bag packing options for easy through-hole assembly and handling.
• Wide Temperature Range & Compliance: Operating temperature range from -55°C to +105°C and RoHS-compliant construction.

Typical Applications

• Switching Power Supplies: Bulk and output filtering where low impedance and high ripple current capability improve transient response and stability.
• DC-DC Converters: Input and output energy smoothing in converters that require compact, high-capacitance decoupling.
• Industrial Power Electronics: General-purpose power filtering in industrial control and power modules operating across a wide temperature range.
• Consumer and Embedded Electronics: Power rail stabilization and local energy storage in compact, through-hole designs.

Unique Advantages

• Proven High-Temperature Endurance: 5000-hour load life at +105°C for the φ10 case delivers predictable aging and long-term stability in thermally demanding designs.
• Balanced Ripple Performance: Explicit low- and high-frequency ripple current ratings (462 mA @120 Hz and 770 mA @200 kHz) let designers size caps to actual operating conditions.
• Compact, Through-Hole Convenience: φ10×20L radial can and 5 mm lead spacing simplify layout and assembly for through-hole boards while providing 390 µF of capacitance.
• Controlled Losses: tan δ = 0.14 (25 V, 20°C, 120 Hz) helps limit dissipation and heating under AC ripple conditions.
• RoHS Compliance: Environmentally compliant materials and manufacturing to meet regulatory requirements.

Why Choose UPJ1E391MPD?

UPJ1E391MPD combines a compact radial aluminum can with a 390 µF, 25 V rating and UPJ-series low-impedance characteristics to address power filtering needs in switching supplies, converters and general-purpose power designs. Its specified ripple current values, controlled dissipation (tan δ) and 5000-hour endurance at +105°C offer predictable electrical performance and longevity for designs that operate across a wide temperature range.

Manufactured by Nichicon and offered in bulk or bag packaging, this part is suited to engineers and procurement teams seeking a reliable, through-hole electrolytic capacitor for mid-voltage power applications where component life and ripple handling are important.

Request a quote or submit an inquiry for UPJ1E391MPD to check pricing and availability for your next design or production run.