UHE1H681MHD

The UHE1H681MHD from Nichicon is a miniature, radial-lead aluminum electrolytic capacitor in the UHE series, engineered for low impedance and extended operational life. It delivers 680 µF at a 50 V rating in a compact φ12.5 × 30.5 mm can with 5 mm lead spacing.

Designed for general-purpose power applications, this high-reliability unit combines high ripple-current capability, low leakage, and a wide operating temperature range (−40 °C to 105 °C) to meet sustained-duty requirements up to 10,000 hours at 105 °C.

Key Features

• Capacitance & Voltage: 680 µF rated capacitance with a 50 V rating and tolerance of −20% to +20% for predictable energy storage and decoupling.
• Low Impedance: Specified impedance of 100 mΩ to support lower voltage drop under AC load and improved transient performance.
• Ripple Current Handling: High ripple capability — 1.732 A at 120 Hz (low frequency) and 2.31 A at 10 kHz (high frequency) — for demanding AC and switching environments.
• Leakage and Loss: Low leakage current of 340 µA and a tangent of loss angle (tan δ) of 0.10 (measured at 20 °C, 120 Hz) for efficient, stable operation.
• High Reliability & Endurance: Rated for 10,000 hours at 105 °C (for the rated voltage range and case size), offering robust long-term performance under elevated temperature stress.
• Package & Mounting: Radial lead can (φ12.5 × 30.5 mm) with 5 mm lead spacing (±0.5 mm), offered in bulk/no terminal forming or bag packing for through‑hole assembly.
• Temperature Range & Compliance: Operating range −40 °C to 105 °C and RoHS-compliant construction.

Typical Applications

• General-purpose power filtering: Use for smoothing and bulk energy storage where 680 µF at 50 V and high ripple currents are required.
• Through-hole power supply designs: Radial lead package with 5 mm lead spacing simplifies mounting in legacy and serviceable boards.
• High-temperature duty circuits: Suitable for applications that require continuous operation up to 105 °C with 10,000-hour endurance.

Unique Advantages

• High ripple-current capability: Supports both low- and high-frequency ripple (1.732 A at 120 Hz, 2.31 A at 10 kHz) to accommodate switching regulators and AC-loaded circuits.
• Low impedance profile: 100 mΩ impedance reduces AC losses and improves voltage stability on power rails.
• Extended life at elevated temperature: 10,000-hour endurance at 105 °C provides predictable long-term performance in sustained thermal environments.
• Compact radial form factor: φ12.5 × 30.5 mm can and standard 5 mm lead spacing make the part easy to integrate into through-hole designs without large board area penalties.
• Low leakage and controlled dissipation: 340 µA leakage and tan δ of 0.10 (20 °C, 120 Hz) help maintain efficiency and thermal stability in continuous-operation circuits.
• RoHS-compliant production: Meets RoHS requirements for restricted substances.

Why Choose UHE1H681MHD?

The UHE1H681MHD positions itself as a compact, reliable solution for designers needing robust bulk capacitance and high ripple handling in through-hole formats. With a 50 V rating, low impedance, low leakage, and a long endurance rating at elevated temperature, it is suited to sustained-duty power systems and general-purpose power conditioning tasks.

Engineers and procurement teams will find the part useful where predictable long-term behavior, simple through-hole integration, and RoHS compliance are required. The combination of electrical performance and endurance supports designs that demand stability under continuous thermal and ripple stress.

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