UPJ1V391MPD

The UPJ1V391MPD is a miniature, high-reliability aluminum electrolytic capacitor from Nichicon's UPJ series, supplied in a radial-lead can package. It delivers 390 µF at 35 V with low impedance characteristics optimized for switching power supplies and general-purpose power-filtering applications.

Designed for demanding thermal environments, this part supports an operating range of −55 °C to +105 °C and a rated load life of 5000 hours at 105 °C, making it suitable where long-term stability and ripple-handling are required.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance with a 35 V rated voltage and ±20% tolerance, suitable for bulk decoupling and energy storage in power circuits.
• Low Impedance Performance — Specified tanδ = 0.12 (measured at 20 °C, 120 Hz) and low-impedance design noted for the UPJ series, supporting efficient ripple handling in switching supplies.
• Ripple Current Capability — Low-frequency ripple current of 573 mA at 120 Hz and high-frequency ripple current of 955 mA at 200 kHz to support AC components of power rails.
• Leakage Current — Leakage current specified at 409.5 µA, allowing predictable standby and bias behavior after voltage application.
• High Temperature Endurance — Rated life of 5000 hours at 105 °C (per UPJ series endurance specification), delivering extended service life under elevated-temperature load conditions.
• Mechanical & Packaging — Radial lead can package, physical size φ10 × 25 mm (diameter × length) with 5 mm lead spacing; available in bulk (no terminal forming) or bag packing. RoHS compliant and in mass production.

Typical Applications

• Switching Power Supplies — Low-impedance behavior and defined ripple-current ratings make it suitable for input/output filtering and energy smoothing in switching regulators.
• General-Purpose Power Filtering — 390 µF capacitance and 35 V rating support decoupling and smoothing in a wide range of electronic equipment.
• High-Temperature Electronics — Rated for −55 °C to +105 °C and 5000 hours endurance at 105 °C, appropriate for designs that require sustained performance in elevated ambient temperatures.

Unique Advantages

• Predictable High-Temperature Life: A 5000-hour endurance rating at 105 °C provides designers with a measurable reliability metric for thermal-stressed applications.
• Designed for Switching Environments: Low impedance characteristics and explicit ripple-current specifications at both 120 Hz and 200 kHz align the part to switching power-supply needs.
• Compact Radial Can Format: φ10 × 25 mm can with 5 mm lead spacing offers a compact solution for through-hole and mixed-technology boards while maintaining sufficient capacitance.
• Defined Electrical Loss: Tangent of loss angle (tanδ) specified at 0.12 (20 °C, 120 Hz) enables predictable AC loss and thermal planning in power designs.
• RoHS Compliant and Production-Ready: RoHS status and mass-production availability simplify procurement and environmental compliance for volume designs.

Why Choose UPJ1V391MPD?

UPJ1V391MPD combines a moderate voltage rating with substantial capacitance in a miniature radial package optimized for low impedance and ripple handling. Its defined leakage, tanδ, and ripple-current specifications give engineers quantifiable parameters for thermal and life modeling in power-conversion circuits.

This capacitor is well suited to designers and purchasers seeking a reliable, production-ready aluminum electrolytic for switching power supplies and general-purpose power filtering where elevated operating temperatures and long-term endurance are required.

If you would like a quote or additional purchasing information for UPJ1V391MPD, please submit a request or contact sales to receive pricing, lead-time, and packaging options.