UHD1H681MHD

The UHD1H681MHD is a radial-lead aluminum electrolytic capacitor offering 680 µF capacitance at a 50 V rating. It is part of Nichicon’s UHD series engineered for low impedance at high frequencies and elevated ripple-current capability.

Designed for general-purpose power applications, the device combines a compact φ12.5 × 30.5 mm can, high ripple-current ratings, and a wide operating temperature range to deliver dependable smoothing and decoupling in systems that require sustained performance up to 105°C.

Key Features

• Capacitance & Voltage — 680 µF nominal capacitance with a 50 V rated voltage and ±20% tolerance (120 Hz, 20°C), providing bulk energy storage for power rails.
• High Ripple Current — Low-frequency ripple current 2.145 A (120 Hz) and high-frequency ripple current 2.86 A (100 kHz), enabling effective ripple handling across a broad frequency range.
• Low Loss Angle — tanδ of 0.10 (measured at 20°C, 120 Hz) for reduced dissipation and improved AC performance at the rated voltage.
• Thermal & Endurance Rating — Rated for operation from −40°C to +105°C with a 5000-hour endurance specification at 105°C, supporting long-term thermal stability under elevated temperature conditions.
• Compact Radial Package — φ12.5 × 30.5 mm aluminum can with 5.0 mm lead spacing (±0.5 mm) and radial lead mounting for straightforward through-hole assembly and mechanical robustness.
• Leakage Current — Specified leakage current of 340 µA (after 2 minutes at 20°C), consistent with predictable quiescent behavior in DC circuits.
• RoHS Compliant & Production Ready — RoHS-compliant construction and mass-production status for supply-chain continuity and regulatory alignment.

Typical Applications

• Power Supply Filtering — Bulk smoothing and output filtering where high ripple-current handling and low impedance at frequency improve voltage stability.
• DC-DC Converter Decoupling — Decoupling and energy buffering on converter input/output rails, leveraging the UHD series’ low impedance in the high-frequency range.
• Industrial Power Electronics — General-purpose power-conditioning tasks in industrial control equipment that operate across −40°C to +105°C.

Unique Advantages

• High Ripple Capability: Rated ripple currents of 2.145 A (120 Hz) and 2.86 A (100 kHz) reduce temperature rise and extend service life in AC-stressed circuits.
• Low High-Frequency Impedance: UHD series design lowers impedance at higher frequencies, improving decoupling effectiveness for switching power stages.
• Long Endurance at Elevated Temperature: 5000 hours at 105°C provides predictable aging characteristics for designs exposed to sustained thermal stress.
• Compact Can Footprint: φ12.5 × 30.5 mm case offers a balance of capacitance and size for space-constrained through-hole layouts.
• Predictable Leakage Performance: Specified leakage current of 340 µA ensures stable standby behavior for power-supply designs.
• Regulatory Compliance: RoHS-compliant materials support environmental compliance requirements for commercial and industrial products.

Why Choose UHD1H681MHD?

UHD1H681MHD positions itself as a reliable, general-purpose aluminum electrolytic capacitor for designs that require substantial bulk capacitance, robust ripple-current handling, and low impedance at higher frequencies. The combination of a 50 V rating, 680 µF capacitance, and a 5.0 mm lead-spacing radial package makes it straightforward to integrate into through-hole power electronics and industrial systems.

With a −40°C to +105°C operating window, a 5000-hour endurance at 105°C, RoHS compliance, and production availability, this part is suitable for engineers and procurement teams seeking a stable, documented capacitor option for long-term deployment and predictable performance under continuous thermal and electrical stress.

If you would like pricing, availability, or to request a quote for UHD1H681MHD, please submit a request or RFQ and our team will respond with details and lead-time information.