UPJ1K681MHD

The UPJ1K681MHD is a radial-lead aluminum electrolytic capacitor from Nichicon’s UPJ series, designed for low-impedance, high-reliability power applications. It delivers 680 µF capacitance at a rated voltage of 80 V in a compact φ16 × 40 mm can with 7.5 mm lead spacing.

Engineered for general-purpose power filtering and switching power supplies, this component combines high ripple-current capability, low dissipation factor, and extended endurance for reliable performance in demanding thermal environments.

Key Features

• Capacitance & Voltage — 680 µF nominal capacitance with a rated voltage of 80 V and tolerance of -20% to +20%.
• Low Impedance Performance — Specified tangent of loss angle (tan δ) of 0.08 at 20°C, 120 Hz (measured at rated voltage), supporting efficient energy handling in power circuits.
• High Ripple Current Handling — Low-frequency ripple current of 999.6 mA (120 Hz) and high-frequency ripple current of 1.47 A (200 kHz) for robust smoothing in switching and DC-DC converter applications.
• Leakage Current — Rated leakage current of 1632 µA, measured under specified conditions.
• Long Endurance — 5000 hours load life at +105°C (as specified for this series), providing extended operational stability under elevated temperature and ripple stress.
• Wide Operating Temperature Range — Functional from -55°C to +105°C to accommodate a broad range of environmental conditions.
• Package & Mounting — Radial lead, can-style package (φ16×40L) with 7.5 mm lead spacing (±0.5 mm); available in bulk (no terminal forming) or bag packing.
• Compliance & Availability — RoHS compliant and in mass production.

Typical Applications

• Switching Power Supplies — Low impedance and high ripple-current capability make UPJ1K681MHD suitable for output smoothing and decoupling in switching regulators.
• General-Purpose Power Filtering — 680 µF capacitance and 80 V rating support bulk filtering and energy storage in a variety of electronic power circuits.
• High-Temperature Environments — Rated to +105°C with a 5000-hour endurance rating for use in applications that require sustained performance at elevated temperatures.

Unique Advantages

• High Voltage Margin — 80 V rated voltage enables use in higher-voltage DC rails where increased working voltage is required.
• Measurable Low Loss — tan δ = 0.08 (20°C, 120 Hz) provides predictable dissipation behavior for thermal and performance budgeting.
• Robust Ripple Capability — Specified ripple current values at both low and high frequency aid designers in selecting the capacitor for switching and high-frequency converter duties.
• Extended Thermal Endurance — 5000-hour life at 105°C supports longer maintenance intervals and improved long-term reliability under thermal stress.
• Through-Hole Convenience — Radial-lead can package with defined lead spacing simplifies prototyping and through-hole assembly processes.
• Production-Ready Supply — RoHS compliance and mass-production status help streamline procurement and regulatory requirements.

Why Choose UPJ1K681MHD?

UPJ1K681MHD delivers a balanced combination of capacitance, voltage rating, and thermal endurance for engineers designing power electronics that require dependable bulk filtering and smoothing. Its low dissipation factor and dual-frequency ripple specifications make performance predictable in both low-frequency and high-frequency environments.

This part is well suited to teams needing a rugged, through-hole aluminum electrolytic solution with clear specification-backed characteristics and production availability. The Nichicon UPJ series’ focus on low impedance and long life supports designs where sustained thermal and ripple stress must be managed over extended service intervals.

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