UHW2A681MHD

The UHW2A681MHD is a miniature, high-reliability aluminum electrolytic capacitor from Nichicon's UHW series. It is a radial-lead, polarized capacitor specified at 680 µF and 100 V, designed for general-purpose applications that demand compact size, low impedance, and elevated ripple-current capability.

Key value propositions include a low-loss dielectric (tanδ = 0.08 at 20°C, 120 Hz), high ripple-current ratings at both low and high frequencies, and a long endurance rating of 12,000 hours at 105°C.

Key Features

• Capacitance & Voltage — 680 µF nominal capacitance with a 100 V rated voltage and ±20% tolerance, providing bulk energy storage for polarized circuit designs.
• Low Loss / Low Impedance — Tangent of loss angle (tanδ) of 0.08 (20°C, 120 Hz) and an impedance of 86 mΩ, supporting efficient high-frequency performance.
• High Ripple Current — Low-frequency ripple current of 1.716 A (120 Hz) and high-frequency ripple current of 2.86 A (10 kHz) for demanding ripple environments.
• Long Endurance — Rated for 12,000 hours at 105°C, providing extended operational life under elevated temperature and bias conditions.
• Compact Radial-Lead Package — φ16 × 35.5 mm can size with 7.5 mm lead spacing (±0.5 mm) and radial lead mounting for through-hole assemblies; available in bulk or bag packing (no terminal forming).
• Environmental Compliance — RoHS compliant and supplied in mass-production status by Nichicon.

Typical Applications

• General Purpose Electronics — Suited to general-purpose circuits requiring a polarized electrolytic capacitor rated at 680 µF and 100 V.
• High-Ripple Environments — Appropriate where elevated ripple-current handling is required, leveraging 1.716 A (120 Hz) and 2.86 A (10 kHz) ripple specifications.
• Through-Hole Power Assemblies — Compact radial-lead form (φ16 × 35.5 mm) with 7.5 mm lead spacing for space-conscious through-hole PCB designs and production packing options.

Unique Advantages

• High ripple-current capability: Specified ripple currents at both 120 Hz and 10 kHz reduce thermal stress in ripple-heavy circuits.
• Low loss at operating frequency: A tanδ of 0.08 at 20°C/120 Hz and low impedance (86 mΩ) help minimize heating and improve efficiency in AC-biased applications.
• Compact, serviceable form factor: φ16 × 35.5 mm radial-can package and standard 7.5 mm lead spacing simplify integration into through-hole assemblies.
• Extended high-temperature life: 12,000-hour endurance at 105°C supports long-term reliability in elevated-temperature environments.
• Clear manufacturing status: Mass-production availability from Nichicon supports predictable sourcing for volume designs.
• Regulatory compliance: RoHS compliance aligns with common environmental requirements for electronic components.

Why Choose UHW2A681MHD?

UHW2A681MHD positions itself as a compact, high-reliability aluminum electrolytic solution for designs that require substantial capacitance at a 100 V rating while maintaining low impedance and strong ripple-current capability. Its radial-lead form, standard lead spacing, and 12,000-hour endurance at 105°C make it appropriate for engineers seeking a durable, production-ready polarized capacitor from a recognized manufacturer.

This part is well suited to designers and procurement teams specifying components for general-purpose electronic assemblies where verified electrical performance, compact packaging, and RoHS compliance are required.

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