UHW1H181MPD

The UHW1H181MPD is a radial-lead aluminum electrolytic capacitor in Nichicon’s UHW series, designed for compact, high-ripple-current applications. It provides 180 µF capacitance at 50 V in a φ10 × 12.5 mm can with 5 mm lead spacing, delivering low impedance and reliable performance across a wide temperature range.

Targeted for general-purpose power applications, this capacitor offers high ripple handling, low leakage and long-term endurance—making it suitable where miniature size, high-frequency performance and extended lifetime at elevated temperatures are required.

Key Features

• Capacitance & Voltage — 180 µF nominal capacitance with a rated voltage of 50 V and capacitance tolerance of −20% to +20%.
• High ripple-current capability — Rated low-frequency ripple current of 680 mA at 120 Hz and high-frequency ripple current of 1.7 A at 10 kHz for effective smoothing in switching power stages.
• Low impedance and dissipation — Measured impedance of 150 mΩ and tanδ of 0.10 (at 20°C, 120 Hz) support improved high-frequency performance and reduced losses.
• Long endurance at elevated temperature — Designed for 10,000 hours of life at 105°C under rated conditions, supporting durability in thermally demanding environments.
• Wide operating temperature — Rated for −40°C to +105°C to cover a broad range of ambient conditions.
• Compact radial package — φ10 × 12.5 mm can, radial lead mounting with 5 mm lead spacing (±0.5 mm) for space-constrained through-hole designs; available bulk or bag packing.
• Low leakage — Specified leakage current of 90 µA, reducing standby losses in DC applications.
• RoHS compliant — Meets RoHS requirements as noted in product data.

Typical Applications

• Power supply filtering — Smoothing bulk and output rails where 180 µF at 50 V is required and high ripple currents must be supported.
• DC-DC converter output decoupling — Compact radial package and high-frequency ripple rating make it suitable for decoupling the outputs of switching regulators.
• Industrial control electronics — Robust endurance (10,000 hours at 105°C) and wide operating temperature enable reliable operation in control and automation systems.
• Consumer and general-purpose electronics — Low leakage and low impedance help maintain power integrity in a variety of general-purpose designs.

Unique Advantages

• Compact footprint with high ripple handling: φ10 × 12.5 mm package supports up to 1.7 A ripple at 10 kHz, enabling smaller board area without sacrificing ripple capability.
• Proven thermal endurance: 10,000-hour life rating at 105°C provides predictable long-term performance in elevated-temperature applications.
• Low-loss operation: 150 mΩ impedance and tanδ of 0.10 at 120 Hz reduce power dissipation and improve efficiency in power circuits.
• Low standby leakage: 90 µA leakage current helps minimize parasitic losses in DC systems and standby modes.
• Through-hole radial convenience: Radial lead form with 5 mm spacing simplifies assembly and replacement in through-hole designs and prototyping.
• Regulatory compliance: RoHS compliance supports deployment in designs requiring restricted-substance adherence.

Why Choose UHW1H181MPD?

The UHW1H181MPD balances a small mechanical footprint with high ripple-current capability, low impedance, and long endurance at elevated temperature—attributes drawn directly from the Nichicon UHW series performance profile. Its combination of 180 µF/50 V rating, compact radial can, and measurable low-loss characteristics make it a practical choice for engineers designing power supply filters, converter outputs, and general-purpose decoupling in constrained spaces.

This part is suited to designs that need reliable, long-lived electrolytic capacitance with verifiable electrical specs (impedance, tanδ, leakage and ripple ratings). Available in bulk or bag packing and in mass-production status, it supports predictable sourcing for production and maintenance requirements.

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