UPA1A821MPD

The UPA1A821MPD is a radial-lead aluminum electrolytic capacitor in Nichicon’s UPA series, offering a compact φ8×15 mm can with 820 µF capacitance and a 10 V rating. It is designed for general-purpose power applications where low impedance and high ripple-handling are required, such as switching power supplies and DC‑DC converter filtering.

With a wide operating temperature range from −55 °C to 105 °C and 3,000 hours endurance at 105 °C, this part provides reliable decoupling and bulk energy storage in compact board-level power designs.

Key Features

• Capacitance & Voltage — 820 µF nominal capacitance at a rated voltage of 10 V, with a tolerance of −20% to +20%.
• Low impedance — Rated impedance of 124 mΩ, helping reduce voltage ripple and improve transient response in power rails.
• High ripple current capability — Low-frequency ripple current of 645 mA (120 Hz) and high-frequency ripple current of 860 mA (10 kHz), enabling effective smoothing in switching applications.
• Loss characteristics — Tangent of loss angle (tan δ) of 0.19 measured at 20 °C, 120 Hz (10 V), for predictable ESR-related losses.
• Leakage current — Specified leakage current of 246 µA, measured under standard conditions.
• Robust temperature and lifetime — Operating temperature −55 °C to 105 °C with an endurance rating of 3,000 hours at 105 °C.
• Compact radial package — φ8×15 mm can with 3.5 mm lead spacing (±0.5 mm), delivered in bulk or bag packing for through‑hole assembly.
• RoHS compliant — Meets RoHS requirements for lead‑free design environments.

Typical Applications

• Switching power supplies — Use for output smoothing and decoupling where low impedance and high ripple current extend converter stability and lifetime.
• DC‑DC converters — Bulk capacitance and high-frequency ripple handling help maintain stable rails in point‑of‑load modules and regulator outputs.
• Embedded and industrial electronics — Compact radial form factor and wide temperature range suit board‑level power filtering in compact controllers and instrumentation.

Unique Advantages

• Compact energy density — 820 µF in a φ8×15 mm can provides substantial bulk capacitance for space-constrained designs.
• Predictable ESR and loss performance — 124 mΩ impedance and a measured tan δ of 0.19 at 10 V/120 Hz enable reliable thermal and ripple calculations.
• High ripple capability across frequencies — Rated ripple currents at both low and high frequencies (645 mA at 120 Hz, 860 mA at 10 kHz) support mixed-frequency switching loads.
• Wide temperature and proven endurance — −55 °C to 105 °C operating range and 3,000-hour endurance at 105 °C support long-term operation in demanding environments.
• Through‑hole reliability and easy handling — Radial-lead can and nominal 3.5 mm lead spacing simplify assembly and mechanical retention for wave or hand solder processes.
• Compliance and availability — RoHS compliant and listed as mass production for predictable supply.

Why Choose UPA1A821MPD?

The UPA1A821MPD is positioned for engineers who need compact, low-impedance bulk capacitance with robust ripple performance for switching regulators and board‑level power systems. Its combination of 820 µF/10 V capacitance, defined impedance and tan δ, and high ripple current ratings makes it suitable for designs that require predictable thermal and electrical behavior under real-world switching conditions.

Designed for long-term operation at elevated temperatures and offered in radial-lead packaging, this capacitor supports reliable power filtering in embedded and industrial designs while meeting RoHS requirements and mass-production availability expectations.

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