UPA1V391MPD6

The UPA1V391MPD6 is a radial-lead aluminum electrolytic capacitor in Nichicon’s UPA series, offering a compact, low-impedance solution for power circuitry. Its design targets general-purpose use and applications such as switching power supplies where high ripple handling and reliable end‑of‑life performance are required.

With a rated capacitance of 390 µF at 35 V and a temperature range from −55 °C to 105 °C, this part delivers a balance of capacitance density, ripple capability, and long-term endurance in a φ10 × 16 mm can with 5 mm lead spacing.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance at a rated voltage of 35 V with a tolerance of −20% to +20%.
• Low Loss (tan δ) — tanδ = 0.12 measured at 20 °C, 120 Hz and 35 V, supporting efficient AC performance in power circuits.
• Low Impedance — Specified impedance of 98 mΩ, enabling better ripple attenuation and improved transient response.
• High Ripple Current Capability — Rated ripple current of 930 mA at 120 Hz (low frequency) and 1.24 A at 10 kHz (high frequency), suitable for switching regulator outputs and bulk filtering.
• Leakage Current — Leakage current specified as 409.5 µA.
• Endurance & Reliability — 4000 hours endurance at 105 °C when used within rated conditions, consistent with UPA series high‑reliability design for power supplies.
• Wide Temperature Range — Operates from −55 °C to 105 °C for robust performance across varied environments.
• Compact Radial Package — φ10 × 16 mm can with 5 mm lead spacing (±0.5 mm) and radial lead mounting for through-hole assembly; available in bulk or bag packing.
• RoHS Compliant & Production Ready — RoHS status compliant and listed as mass production.

Typical Applications

• Switching Power Supplies — Bulk filtering and output smoothing where high ripple current capability and low impedance support stable regulator operation.
• General‑Purpose Power Filtering — Decoupling and energy storage in general‑purpose power circuits that require a compact, reliable electrolytic solution.
• Power Modules and Control Circuits — Local bulk capacitance for power modules and control electronics operating across −55 °C to 105 °C.

Unique Advantages

• Improved ripple handling: High specified ripple currents (930 mA at 120 Hz and 1.24 A at 10 kHz) reduce voltage ripple under load and support switching applications.
• Low-loss operation: A low tanδ (0.12 at 35 V, 120 Hz) and 98 mΩ impedance contribute to efficient AC performance and reduced heat generation.
• Compact through-hole form factor: φ10 × 16 mm can with 5 mm lead spacing offers a small footprint for dense PCB layouts while retaining radial-lead mounting simplicity.
• High-temperature endurance: Rated for 4000 hours at 105 °C, providing predictable lifetime behavior in elevated-temperature installations.
• Wide operating range: −55 °C to 105 °C operation supports deployment across a broad set of environmental conditions.
• Production-ready supply: RoHS compliant and in mass production for predictable procurement and assembly planning.

Why Choose UPA1V391MPD6?

UPA1V391MPD6 combines the UPA series’ focus on compact, low-impedance design with practical electrical performance—390 µF at 35 V, low tanδ, and defined ripple current ratings—making it well suited for designers who need robust bulk capacitance and improved ripple performance in through-hole implementations. Its 4000‑hour endurance at 105 °C and wide −55 °C to 105 °C operating window support reliable operation in a range of power-system environments.

This part is appropriate for engineers specifying general-purpose and switching‑power supply capacitors that require a predictable combination of capacitance, ripple capability, and long-term stability from a recognized manufacturer, Nichicon.

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