UHW1J681MHD

The UHW1J681MHD is a radial-lead aluminum electrolytic capacitor in Nichicon’s UHW series, offering 680 µF capacitance at a 63 V rating. It is a miniature-sized, high ripple current, high reliability capacitor designed for general-purpose power applications.

With a compact φ12.5 × 30.5 mm can, low impedance and specified ripple current performance across low and high frequencies, the UHW1J681MHD is suited to designs that require robust smoothing, decoupling and energy storage in a small footprint and wide temperature range.

Key Features

• Capacitance & Voltage — 680 µF nominal capacitance with a rated voltage of 63 V and capacitance tolerance of -20% to +20%.
• High ripple current capability — Low-frequency ripple current rated at 1.656 A (120 Hz) and high-frequency ripple current rated at 2.76 A (10 kHz), enabling effective AC ripple handling in power circuits.
• Low loss and low impedance — Tangent of loss angle (tanδ) of 0.09 (measured at 20°C, 120 Hz) and specified impedance of 130 mΩ for improved filtering performance at operating frequencies.
• Robust temperature and lifetime — Operating range from -40°C to +105°C with an endurance rating of 12,000 hours at 105°C.
• Compact radial package — φ12.5 × 30.5 mm can with 5 mm lead spacing (±0.5 mm), suited for through-hole radial mounting where board space is constrained.
• Leakage current — Specified leakage current of 428.4 µA after application of rated voltage, enabling predictable bias behavior in steady-state operation.
• Compliance and packaging — RoHS compliant and available in bulk (no terminal forming) or bag packing for flexible procurement.

Typical Applications

• Power supply smoothing — Bulk capacitance for smoothing and decoupling in 63 V rails where compact size and high ripple handling are required.
• DC/DC converter support — Energy storage and input/output filtering for converters that demand low impedance and sustained ripple current capability.
• General-purpose electronics — Through-hole radial mounting for controllers, industrial modules and other equipment operating across -40°C to 105°C.

Unique Advantages

• High ripple endurance: Specified ripple currents at both low and high frequencies (1.656 A at 120 Hz; 2.76 A at 10 kHz) reduce thermal stress in high ripple environments.
• Low impedance and loss: 130 mΩ impedance and tanδ 0.09 (120 Hz, 20°C) provide effective filtering and lower voltage drop under AC load.
• Compact footprint: φ12.5 × 30.5 mm can fits into space-constrained through-hole designs while still delivering 680 µF of capacitance.
• Long life at elevated temperature: Rated for 12,000 hours at 105°C for extended reliability in thermally demanding installations.
• Wide operating range: -40°C to 105°C supports a broad set of environmental conditions without derating beyond the specified limits.
• Predictable leakage: Specified leakage current of 428.4 µA enables designers to budget standby current and bias performance accurately.

Why Choose UHW1J681MHD?

The UHW1J681MHD combines a high-capacitance, 63 V rating with low impedance, measurable low loss and strong ripple current capability in a compact radial can. Its extended 12,000-hour endurance at 105°C and wide -40°C to 105°C operating range make it suitable for designs that require reliable smoothing and energy storage under sustained thermal and electrical stress.

This part is appropriate for engineers specifying general-purpose through-hole capacitors where a balance of size, ripple performance and long-term reliability matter. RoHS compliance and flexible packaging options support straightforward integration and procurement for production designs.

If you would like pricing or availability, request a quote or contact sales to submit a purchasing inquiry for the UHW1J681MHD.