UPJ1A821MPD

The UPJ1A821MPD is a high-reliability miniature aluminum electrolytic capacitor from Nichicon's UPJ series. It is a radial-lead, polarized can-type capacitor specified at 820 µF and 10 V, designed for general-purpose power applications.

Built for low impedance and extended endurance, the UPJ series is suited for use in switching power supplies and other power-management circuits requiring elevated ripple handling and sustained operation up to +105°C.

Key Features

• Capacitance and Tolerance — 820 µF nominal with a tolerance of −20% to +20% at 20°C, 120 Hz.
• Rated Voltage — 10 V DC nominal rating for low-voltage power rails.
• Low Impedance Design — Series-classified as "Low Impedance" for switching power supply usage, improving voltage stability under ripple conditions.
• Ripple Current Performance — Low-frequency ripple current 601.2 mA at 120 Hz and high-frequency ripple current 835 mA at 200 kHz, supporting power conversion and filtering tasks.
• Endurance — Long-life specification: 5000 hours at +105°C for the 2φ10 case size, meeting sustained high-temperature load conditions.
• Loss and Leakage — tanδ (DF) 0.19 measured at 20°C, 120 Hz; leakage current listed as 246 µA after rated voltage application.
• Package and Mechanical — Radial lead can, size φ10 × 20 mm, lead spacing 5.0 mm with ±0.5 mm tolerance; bulk or bag packing available.
• Operating Temperature Range — −55°C to +105°C for a wide range of environmental conditions.
• Regulatory — RoHS compliant.

Typical Applications

• Switching Power Supplies — Low impedance and high ripple-current capability make this capacitor suitable for input/output filtering and smoothing in switched-mode power supplies.
• Power Rail Decoupling — Use on low-voltage power rails to stabilize voltage during transient load events.
• Industrial Power Modules — Endurance at +105°C and robust leakage/tanδ characteristics support continuous operation in industrial power assemblies.
• Consumer Electronics Power Management — Compact φ10 × 20 mm radial package provides bulk capacitance for board-level power conditioning in compact equipment.

Unique Advantages

• Proven Long-Life Performance: Rated for 5000 hours at +105°C for the 2φ10 case size, enabling reliable operation under sustained high-temperature load.
• Designed for Low Impedance: UPJ series classification emphasizes low impedance behavior, improving filtering effectiveness in switching applications.
• High Ripple-Handling Capability: Specified ripple currents at both 120 Hz and 200 kHz support a range of power-conversion frequencies.
• Compact, Radial-Lead Form Factor: φ10 × 20 mm can with 5 mm lead spacing offers a balance of bulk capacitance and board-level compatibility.
• Measurable Loss and Leakage Specs: tanδ 0.19 (20°C, 120 Hz) and defined leakage current (246 µA) provide predictable electrical behavior for design validation.
• RoHS Compliant: Meets RoHS directive requirements for restricted substances.

Why Choose UPJ1A821MPD?

UPJ1A821MPD combines substantial bulk capacitance (820 µF) with low-impedance characteristics and defined ripple-current capability, making it a practical choice for engineers building switching power supplies and power-management circuits that operate at elevated temperatures. Its 2φ10 radial-can package provides a compact solution where board space and leaded mounting are factors.

With a 5000-hour endurance rating at +105°C (for the 2φ10 case size), specified loss and leakage figures, and RoHS compliance, this Nichicon UPJ part is positioned for designs that demand sustained reliability and predictable electrical performance in general-purpose power applications.

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