UPJ1K821MHD

The UPJ1K821MHD is a Nichicon UPJ series miniature aluminum electrolytic capacitor, radial lead, polarized design with 820 µF capacitance and an 80 V rated voltage. It is engineered for high-reliability power applications where low impedance, sustained ripple handling and extended high-temperature life are required.

This part is optimized for switching power supplies and general-purpose power smoothing in industrial and electronic equipment, offering a combination of high ripple-current capability and a long endurance rating at elevated temperature.

Key Features

• Capacitance & Voltage — 820 µF capacitance with an 80 V rated voltage and tolerance of −20% to +20%, providing bulk energy storage for power rails.
• Low loss — Tangent of loss angle (tanδ) of 0.08 measured at 20°C, 120 Hz and 80 V, supporting lower dissipation in AC ripple environments.
• High ripple-current capability — Low-frequency ripple current 1.145 A at 120 Hz and high-frequency ripple current 1.59 A at 200 kHz to support switching converters and power smoothing.
• Extended endurance — Rated life of 5000 hours at 105°C (high-reliability specification), suitable for designs requiring long-term thermal stability.
• Wide operating temperature — Specified for −55°C to +105°C operation to cover demanding thermal environments.
• Mechanical package — Radial lead can, size φ18 × 35.5 mm (L: 3.55 × D: 1.8 cm), lead spacing 7.5 mm (±0.5 mm), designed for through-hole mounting.
• Leakage current — 1968 µA specified leakage current, measurable after voltage application per the datasheet conditions.
• Environmental compliance & availability — RoHS compliant and in mass production; available in bulk (no terminal forming) / bag packing.

Typical Applications

• Switching power supplies — Bulk smoothing and ripple filtering in SMPS designs where low impedance and ripple handling are critical.
• DC‑DC converters — Input/output energy storage and decoupling for converters operating at high switching frequencies.
• Industrial power electronics — Power rail stabilization and filtering in industrial control and power management equipment subject to elevated temperatures.

Unique Advantages

• Designed for long high-temperature life — 5000 hours endurance at 105°C delivers predictable lifetime performance for thermally demanding systems.
• Measurable low dissipation — tanδ of 0.08 at 20°C, 120 Hz (80 V) supports reduced heat generation under ripple conditions.
• Strong ripple handling across frequencies — Specified ripple currents at 120 Hz and 200 kHz enable use in both line-frequency and high-frequency switching environments.
• Through-hole robustness — Radial lead can with 7.5 mm lead spacing and φ18 mm diameter provides a compact, serviceable solution for PCB-mounted power stages.
• Regulatory and production readiness — RoHS-compliant and in mass production, simplifying procurement and regulatory compliance for volume designs.

Why Choose UPJ1K821MHD?

The UPJ1K821MHD combines the UPJ series' low-impedance characteristics with verified long-term endurance at elevated temperature, making it a practical choice for engineers designing switching power supplies, DC-DC converters and industrial power systems. Its specified ripple currents, measurable tanδ and clear leakage current data enable predictable thermal and electrical performance in demanding applications.

This part is appropriate for designs that prioritize long life, consistent ripple performance and a compact radial-can form factor, backed by Nichicon production availability and RoHS compliance for streamlined integration into commercial and industrial products.

If you would like pricing, availability or a formal quote for UPJ1K821MHD, please request a quote or contact sales for assistance and ordering information.