UPA1C331MPD

The UPA1C331MPD is a Nichicon UPA series radial-lead aluminum electrolytic capacitor specified at 330 µF and 16 V. It is a miniature, low-impedance, high-reliability can designed for through-hole mounting and general-purpose power applications.

Targeted uses include switching power supplies and board-level power smoothing where compact size, high ripple handling and extended high-temperature endurance are required. The part is RoHS compliant and available in mass-production quantities.

Key Features

• Capacitance and Voltage — 330 µF rated capacitance at 16 V with capacitance tolerance ±20% (−20% to +20%) measured at 120 Hz, 20°C.
• Low Impedance — Specified impedance of 180 mΩ, delivering improved AC performance for power filtering and decoupling.
• High Ripple Current Capability — Supports 409.5 mA at 120 Hz (low frequency) and 630 mA at 10 kHz (high frequency) for effective smoothing under dynamic loads.
• Loss Characteristics — Tangent of loss angle (tan δ) 0.16 measured at 20°C, 120 Hz and rated voltage (16 V), supporting predictable dissipation characteristics.
• Thermal and Endurance Rating — Operating temperature range −55°C to +105°C with a rated life of 3000 hours at 105°C for the φ8 can size.
• Physical and Mounting — Radial lead, can-style package with dimensions φ8 × 11.5 mm (L × D), lead spacing 3.5 mm (±0.5 mm). Available in bulk (no terminal forming) or bag packing.
• Leakage Current — Specified leakage current 158.4 µA (measured per product data conditions).
• Regulatory — RoHS compliant.

Typical Applications

• Switching Power Supplies — Low impedance and high ripple current handling make this capacitor suitable for output smoothing and energy buffering in switching regulators.
• Board-level Power Filtering — Radial-lead format and compact φ8 can size enable straightforward through-hole mounting for decoupling and bulk filtering on power distribution rails.
• General-Purpose Power Modules — Designed for general-purpose use where stable capacitance, predictable loss (tan δ), and elevated temperature endurance are required.

Unique Advantages

• Compact, high-density can — φ8 × 11.5 mm footprint provides a small through-hole solution for 330 µF capacitance at 16 V, saving board space in power circuits.
• Measured low impedance — 180 mΩ impedance supports lower voltage ripple and improved transient response compared with higher-impedance parts.
• Validated ripple performance — Explicit low- and high-frequency ripple current ratings (409.5 mA @120 Hz, 630 mA @10 kHz) let designers size thermal and lifetime margins reliably.
• Extended high-temperature life — 3000 hours at 105°C rating for the φ8 case supports sustained operation in elevated-temperature environments.
• Through-hole convenience — Radial lead spacing of 3.5 mm (±0.5 mm) and standard lead diameters simplify PCB layout and assembly for manual or wave-solder processes.
• Regulatory compliance — RoHS compliance supports use in environmentally regulated designs.

Why Choose UPA1C331MPD?

The UPA1C331MPD balances compact size with measurable low impedance and robust ripple-current capability, making it well suited for designers who need a reliable through-hole electrolytic for switching power supplies and general-purpose power filtering. Its 3000-hour endurance at 105°C and clear electrical parameters (impedance, tan δ, leakage, ripple currents) make performance predictable for thermal and lifetime planning.

This part is appropriate for engineers specifying radial-lead aluminum electrolytics where board space, ripple performance, and elevated-temperature life are priorities. RoHS compliance and mass-production status support production-volume procurement and deployment.

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