UHW2A221MHD

The UHW2A221MHD is a radial-lead aluminum electrolytic capacitor offering 220 µF capacitance at a 100 V rated voltage. It belongs to Nichicon's UHW series, designed as a miniature-sized, high ripple current, high reliability solution for general-purpose electronic circuits.

With a compact φ12.5×25L can, low impedance and defined ripple current ratings across low and high frequencies, this capacitor is intended for applications that require stable performance over a wide temperature range and extended endurance.

Key Features

• Electrical Capacity — 220 µF capacitance with a tolerance of −20% to +20%, providing a predictable storage and smoothing element for 100 V systems.
• High Voltage Rating — 100 V rated voltage suitable for higher-voltage DC circuits where elevated operating voltage is required.
• Low Impedance — Specified impedance of 140 mΩ, supporting efficient AC ripple handling and reduced voltage drop under load.
• Ripple Current Capability — Rated low-frequency ripple current of 1.105 A at 120 Hz and high-frequency ripple current of 2.21 A at 10 kHz, enabling sustained operation under ripple loads.
• Leakage and Loss Characteristics — Leakage current specified at 220 µA and a dissipation factor (tan δ) of 0.08 measured at 20°C, 120 Hz, for predictable loss and standby current behavior.
• Thermal and Endurance Performance — Operating temperature range −40°C to 105°C with an endurance rating of 12,000 hours at 105°C.
• Mechanical and Mounting — Radial lead mounting type with 5 mm lead spacing (±0.5 mm) and a cylindrical can size φ12.5×25L for compact board-level placement.
• Packaging and Compliance — Available in bulk (no terminal forming) or bag packing and RoHS compliant.

Typical Applications

• General-purpose power circuits — 220 µF and 100 V rating make this capacitor suitable for general-purpose board designs that require energy storage and smoothing in higher-voltage circuits.
• Power supply filtering — Low impedance and specified ripple current ratings (1.105 A @120 Hz; 2.21 A @10 kHz) support filtering and decoupling in power supply stages.
• Industrial and control equipment — Wide operating temperature (−40°C to 105°C) and 12,000-hour endurance at 105°C support long-term operation in demanding environments.

Unique Advantages

• High ripple handling: Explicit ripple current ratings at both 120 Hz and 10 kHz allow designers to match the capacitor to application-specific ripple profiles.
• Measured low impedance: 140 mΩ impedance reduces AC voltage drop and improves filtering performance in compact circuits.
• Extended high-temperature life: 12,000 hours at 105°C provides predictable longevity for designs requiring long-term thermal reliability.
• Compact radial form factor: φ12.5×25L can with 5 mm lead spacing simplifies placement in through-hole assemblies while conserving board area.
• Standby and loss control: Low leakage current (220 µA) and a tan δ of 0.08 at 20°C, 120 Hz help control standby losses and thermal rise.
• Regulatory compliance: RoHS compliant for use in systems requiring restricted-substance conformity.

Why Choose UHW2A221MHD?

The UHW2A221MHD combines a 220 µF/100 V rating with low impedance and verified ripple current performance to deliver a reliable, compact electrolytic for general-purpose power electronics. Its extended endurance at elevated temperature and controlled leakage make it suitable for applications where steady long-term performance is required.

This part is well suited to engineers and procurement teams designing higher-voltage power stages, filtering networks, and industrial control electronics who need quantifiable specifications for ripple, impedance, and thermal endurance from a radial-lead capacitor offered in production quantities.

If you would like pricing or availability, request a quote or submit an inquiry to receive further procurement and technical details for UHW2A221MHD.