UPA1E391MPD

The UPA1E391MPD is an aluminum electrolytic capacitor from Nichicon's UPA series, delivered in a radial-lead can ideal for through-hole power designs. It provides 390 µF capacitance at a 25 V rating with a compact footprint (L: 1.5 × D: 0.8 cm) and 3.5 mm lead spacing for space-constrained boards.

Designed for switching power supplies and general-purpose power filtering, this polarized capacitor combines low impedance, measurable ripple-current capability, and long-term endurance—operating from –55 °C to +105 °C with a rated life of 3000 hours at 105 °C. It is RoHS compliant.

Key Features

• Electrical Capacity — 390 µF nominal capacitance with ±20% tolerance at 120 Hz, suitable for bulk smoothing and decoupling in power rails.
• Voltage Rating — 25 V rated voltage for common low-voltage power-supply rails.
• Low Impedance — Specified impedance of 124 mΩ to reduce ripple voltage and improve regulator stability under load.
• High Ripple Current Handling — Rated ripple currents of 645 mA at 120 Hz and 860 mA at 10 kHz support continuous AC loading in switching applications.
• Compact Radial Package — Radial can (radial lead) with 3.5 mm lead spacing and small can dimensions for PCB layouts with limited area.
• Wide Temperature and Long Life — Operating range –55 °C to +105 °C with 3000 hours lifetime at 105 °C, supporting sustained operation in elevated-temperature environments.
• Polarized Construction — Standard polarized aluminum electrolytic design for correct polarity installation in DC circuits.
• Environmental Compliance — RoHS compliant.

Typical Applications

• Switching Power Supplies — Bulk and output filtering where compact size and low impedance help minimize output ripple and improve regulator response.
• DC-DC Converters — Input/output smoothing for point-of-load converters in compact power modules.
• Embedded and Industrial Power Rails — Decoupling and energy storage on board-level power distribution for embedded systems and control electronics.
• Consumer Power Electronics — General-purpose filtering in compact consumer power supplies and adapters where board space and ripple handling are important.

Unique Advantages

• Compact footprint: Small can dimensions (L: 1.5 × D: 0.8 cm) and 3.5 mm lead spacing enable dense PCB placement and smaller power supply designs.
• Lower ripple-induced voltage: Low specified impedance (124 mΩ) helps reduce ripple voltage, improving downstream regulator stability and performance.
• High-frequency ripple performance: Rated ripple-current values include 860 mA at 10 kHz, supporting high-frequency switching environments.
• Temperature endurance: Wide operating range (–55 °C to +105 °C) and 3000-hour lifetime at 105 °C provide predictable durability in elevated-temperature applications.
• Through-hole reliability: Radial-lead, can-style package offers robust mechanical and solder joint characteristics for through-hole assembly.
• RoHS compliance: Meets RoHS requirements for environmental and regulatory alignment.

Why Choose UPA1E391MPD?

The UPA1E391MPD is positioned for designers who need a compact, low-impedance aluminum electrolytic capacitor for switching power supplies and general-purpose power filtering. Its combination of 390 µF capacitance, 25 V rating, and measurable ripple-current capability addresses common requirements for board-level power stability in space-constrained designs.

With a wide operating temperature range and a rated life of 3000 hours at 105 °C, this capacitor delivers predictable endurance for products exposed to elevated temperatures. RoHS compliance and a radial-lead can package make it a pragmatic choice for through-hole assemblies where reliability and a small footprint are priorities.

If you would like pricing, availability, or lead-time information for UPA1E391MPD, request a quote or contact sales to discuss volumes and delivery options.