UPA1C391MPD

The UPA1C391MPD is a radial-lead aluminum electrolytic capacitor in the Nichicon UPA series, specified at 390 µF and 16 V. It is a miniature, low-impedance, polar capacitor designed for general-purpose use and for switching power supply applications.

Key value comes from a compact φ8 × 11.5 mm can, rated for operation from -55°C to 105°C, and an endurance rating of 3000 hours at 105°C—making it suitable where ripple performance, temperature resilience, and long-term stability are required.

Key Features

• Capacitance & Rated Voltage — 390 µF nominal capacitance with a rated voltage of 16 V and tolerance of -20% to +20%.
• Low Impedance — Specified impedance of 180 mOhm, supporting improved AC performance in power circuits.
• Controlled Loss (tan δ) — Tan δ of 0.16 measured at 20°C, 120 Hz, offering predictable dissipation characteristics for design calculations.
• High Ripple Current Capability — Low-frequency ripple current of 472.5 mA at 120 Hz and high-frequency ripple current of 630 mA at 10 kHz, with frequency coefficient data available for other frequencies.
• Leakage Current — Specified leakage current of 187.2 µA, supporting steady-state DC applications.
• Thermal Endurance — Rated life of 3000 hours at 105°C under specified test conditions, with specified limits for capacitance change, tan δ, and leakage after endurance testing.
• Compact Radial Package — φ8 × 11.5 mm case with 3.5 mm lead spacing (±0.5 mm), available as bulk (no terminal forming) or bag packing for flexible assembly handling.
• Environmental Compliance — RoHS compliant.

Typical Applications

• Switching Power Supplies — Use for output filtering and bulk decoupling where low impedance and high ripple current handling improve regulator performance.
• DC Power Filtering — Effective for smoothing and decoupling rails in power modules and converters operating up to 16 V.
• Industrial & General-Purpose Electronics — Suited to embedded systems and control electronics that require a compact, high-temperature-capable electrolytic capacitor.

Unique Advantages

• Miniature, high-density package: φ8 × 11.5 mm can provides significant capacitance in a small footprint for space-constrained boards.
• Low impedance for improved ripple control: 180 mOhm impedance and specified ripple currents reduce voltage ripple on DC rails.
• Wide operating temperature range: Rated from -55°C to 105°C to support designs exposed to broad thermal environments.
• Long endurance at elevated temperature: 3000 hours at 105°C ensures predictable aging and long-term performance for demanding applications.
• Design-friendly loss and leakage specs: Tangent of loss angle (tan δ = 0.16) and leakage current (187.2 µA) allow accurate thermal and leakage budgeting.
• Flexible packing options: Available in bulk (no terminal forming) or bag packing to match different assembly workflows.

Why Choose UPA1C391MPD?

The UPA1C391MPD combines a compact radial can design with low impedance, defined ripple-current capability, and extended high-temperature endurance—attributes that matter for power-supply designers and OEMs building reliable DC power subsystems. Its clear electrical specifications (390 µF, 16 V, 180 mOhm, defined tan δ and leakage) make it straightforward to model and integrate into supply filtering, decoupling, and energy-storage functions.

This part is a practical choice for engineers seeking a miniature, RoHS-compliant electrolytic capacitor with quantified ripple handling and long-term performance at elevated temperature, suitable for general-purpose and switching power applications.

Request a quote or submit a parts inquiry today to confirm availability, pricing, and lead-time for UPA1C391MPD.