UHW1K181MHD6

The UHW1K181MHD6 is a radial‑lead, miniature aluminum electrolytic capacitor from Nichicon’s UHW series designed for general‑purpose electronic applications. It combines a compact φ12.5×15 mm can size and 5 mm lead spacing with high ripple current capability and a long rated life to support reliable power decoupling and filtering.

Key value comes from its high ripple tolerance, low impedance at frequency, and extended endurance—specified for 12,000 hours at 105°C—making it suitable where compact size, thermal endurance, and sustained ripple performance are required.

Key Features

• Capacitance & Voltage — 180 µF nominal capacitance with an 80 V rated voltage and ±20% tolerance, providing defined energy storage and voltage handling for polarized applications.
• High Ripple Current — Rated low‑frequency ripple current of 572 mA at 120 Hz and high‑frequency ripple current of 1.43 A at 10 kHz, supporting sustained AC ripple handling in compact designs.
• Low Impedance & Loss — Specified impedance of 470 mOhm and tan δ (loss tangent) of 0.09 measured at 20°C, 120 Hz, enabling improved performance at higher frequencies.
• Long Endurance — Life rating of 12,000 hours at 105°C under specified conditions, with defined limits for capacitance change, tan δ, and leakage current after endurance testing.
• Robust Temperature Range — Operating temperature range from −40°C to +105°C for broad environmental compatibility within its specified limits.
• Compact Radial Package — φ12.5×15 mm can with 5 mm lead spacing (±0.5 mm) and radial lead mounting for through‑hole designs; available in bulk (no terminal forming) or bag packing.
• Low Leakage — Leakage current specified at 144 µA (measured condition per product data), supporting predictable bias behavior in polarized circuits.
• RoHS Compliant — Manufactured in accordance with RoHS requirements as stated in the product information.

Typical Applications

• General‑purpose filtering — Bulk energy storage and smoothing in general‑purpose circuits where a polarized aluminum electrolytic with 80 V rating and 180 µF is required.
• Power decoupling — Local decoupling for power rails that demand compact size and elevated ripple current handling.
• Frequency‑dependent ripple handling — Applications that require reliable ripple performance across low and high frequencies, leveraging the capacitor’s specified ripple current at 120 Hz and 10 kHz.

Unique Advantages

• High ripple capability in a small footprint: Delivers 572 mA (120 Hz) and 1.43 A (10 kHz) ripple currents from a φ12.5×15 mm can, allowing designers to reduce board area without sacrificing ripple performance.
• Long rated life at elevated temperature: 12,000 hours at 105°C provides predictable endurance for thermal stress environments within the specified range.
• Clear electrical characterization: Specified impedance (470 mOhm), tan δ (0.09), and leakage current (144 µA) give engineers measurable parameters for circuit design and simulation.
• Radial through‑hole convenience: 5 mm lead spacing and standard radial can package simplify assembly and prototyping for through‑hole PCB layouts.
• RoHS compliance: Meets environmental requirements cited in the product information, aiding regulatory alignment in end products.

Why Choose UHW1K181MHD6?

The UHW1K181MHD6 positions itself as a compact, high‑reliability polarized aluminum electrolytic capacitor suitable for general‑purpose filtering and decoupling where elevated ripple current, low impedance, and extended thermal endurance are required. Its clear electrical specifications and long life rating at 105°C make it a practical choice for designers seeking predictable performance in constrained board space.

Engineers and procurement teams looking for a radial‑lead capacitor with defined ripple performance, measurable loss characteristics, and RoHS compliance will find the UHW1K181MHD6 a robust option for a range of general‑purpose electronic designs.

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