UHW1K681MHD

The UHW1K681MHD is a miniature, high‑reliability aluminum electrolytic capacitor in a radial‑lead can, part of Nichicon’s UHW series. It delivers 680 µF nominal capacitance at a rated voltage of 80 V in a compact φ12.5 × 40 mm package with 5 mm lead spacing.

Designed for general‑purpose electronic applications that require elevated ripple handling and long life, the UHW1K681MHD combines low impedance, high ripple current capability, and extended endurance up to 12,000 hours at 105°C.

Key Features

• Capacitance & Voltage: 680 µF nominal capacitance with an 80 V rated voltage and ±20% tolerance, suitable where bulk capacitance at higher DC voltages is required.
• High Ripple Current: Low‑frequency ripple current of 1.716 A (120 Hz) and high‑frequency ripple current of 2.86 A (10 kHz), enabling effective smoothing under continuous ripple stress.
• Low Impedance & Loss: Impedance of 95 mΩ and tangent of loss angle (tan δ) of 0.09 measured at 20°C, 120 Hz (80 V rating), supporting lower dissipation in high‑frequency environments.
• Extended Endurance: Rated endurance of 12,000 hours at 105°C per series specifications, offering long term stability under elevated temperature and DC bias.
• Robust Environmental Range: Operating temperature range from −40°C to 105°C for broad environmental compatibility.
• Through‑Hole Radial Package: Radial lead mounting (lead spacing 5.0 mm, lead spacing tolerance ±0.5 mm) in a φ12.5 × 40 mm can; available in bulk (no terminal forming) or bag packing.
• RoHS Compliant: Meets RoHS directive requirements as noted in the product series information.

Typical Applications

• General‑Purpose Electronics: For designs that require 680 µF at 80 V with long endurance and wide temperature range—suitable wherever radial aluminum electrolytic capacitors are specified.
• High‑Ripple Environments: Use in circuits that encounter significant AC ripple or switching noise, leveraging the 1.716 A (120 Hz) and 2.86 A (10 kHz) ripple current ratings.
• Compact Through‑Hole Designs: Fits compact PCB real estate with a φ12.5 × 40 mm case and 5 mm lead spacing for radial lead mounting.

Unique Advantages

• High ripple tolerance: Measurable ripple current ratings at both low and high frequencies reduce overheating risk and improve reliability under AC stress.
• Low series impedance: 95 mΩ impedance and a low tan δ help reduce voltage drop and internal heating in high‑frequency and high‑load conditions.
• Long life at elevated temperature: 12,000 hours endurance at 105°C supports sustained performance in demanding thermal environments.
• Compact radial form factor: φ12.5 × 40 mm can with standard 5 mm lead spacing simplifies integration into through‑hole assemblies while saving board area.
• Measured leakage performance: Specified leakage current of 544 µA provides a quantified baseline for design and power budgeting.
• Regulatory compliance: RoHS compliance supports use in designs targeting restricted‑substance requirements.

Why Choose UHW1K681MHD?

UHW1K681MHD positions itself as a practical, performance‑focused radial aluminum electrolytic capacitor for engineers who need substantial capacitance at 80 V without compromising ripple handling or lifetime. Its combination of low impedance, quantified ripple current capability at 120 Hz and 10 kHz, and 12,000‑hour endurance at 105°C delivers predictable behavior in continuous‑use applications.

This part is well suited to designers and procurement teams specifying general‑purpose through‑hole capacitors where compact size, measurable electrical performance (impedance, tan δ, leakage), and regulatory compliance are required. The UHW1K681MHD provides a clear, data‑driven choice for robust designs that demand long‑term stability and manageable thermal and ripple performance.

Request a quote or contact sales to discuss availability, packaging options (bulk or bag packing), and volume pricing for the UHW1K681MHD.