UCP2G181MHD

The UCP2G181MHD is a miniature, high-reliability aluminum electrolytic capacitor from Nichicon’s UCP series. It is a radial-lead, polarized capacitor specified at 180 µF and 400 V, designed for general-purpose high-voltage power applications.

Key value comes from its long endurance rating (10,000 hours at 105°C), compact φ18×40 mm size with 7.5 mm lead spacing, and rated ripple performance across low and high frequencies—making it suitable where high-voltage smoothing and sustained ripple handling are required.

Key Features

• Electrical Rating — 180 µF nominal capacitance at a 400 V rated voltage with capacitance tolerance of -20% to +20%.
• High-Temperature Endurance — Rated for 10,000 hours at 105°C with defined endurance criteria for capacitance change, tan δ and leakage current.
• Ripple Performance — Low-frequency ripple current 1.06 A (120 Hz) and high-frequency ripple current 1.59 A (10 kHz), enabling effective smoothing across a range of ripple conditions.
• Leakage and Losses — Specified leakage current of 2,980 µA and tan δ (DF) of 0.24 measured at 20°C, 120 Hz for controlled dissipation and predictable behavior.
• Compact Radial Package — φ18 × 40 mm can with radial leads and 7.5 mm lead spacing (±0.5 mm), available in bulk or bag packing for through-hole assembly.
• Wide Operating Temperature — Operational range from -40°C to +105°C for use across varied thermal environments.

Typical Applications

• High‑voltage power filtering — Provides bulk smoothing and decoupling on 400 V rails where compact, high-voltage capacitors are required.
• DC link and energy storage — Suited for general-purpose DC link smoothing with rated ripple capability and long endurance at elevated temperature.
• Industrial power electronics — Appropriate for general-purpose power electronics modules that require a polarized, high-voltage capacitor with defined lifetime and ripple specs.

Unique Advantages

• High voltage in a miniature package — 400 V rating in a φ18×40 mm can minimizes board area for high‑voltage designs.
• Long, specified lifetime — 10,000 hours at 105°C provides predictable aging and planning for long-term reliability.
• Measured ripple capability across frequencies — Published ripple current values at 120 Hz and 10 kHz allow designers to size capacitors based on actual ripple environments.
• Clear electrical loss and leakage specifications — Tan δ of 0.24 and leakage current value (2,980 µA) enable accurate thermal and leakage budgeting in the bill of materials.
• Through-hole radial format — 7.5 mm lead spacing and standard radial can simplify prototyping and through-hole assembly processes.
• Production-ready availability — Listed as mass production with bulk and bag packing options for volume procurement.

Why Choose UCP2G181MHD?

The UCP2G181MHD positions itself as a reliable, compact solution for designers who need a 400 V, 180 µF polarized capacitor with verified ripple performance and a long endurance rating. Its combination of high-voltage capability, controlled leakage and dissipation characteristics, and specified lifetime at 105°C makes it suitable for general-purpose power systems where predictable aging and thermal behavior matter.

This part is well suited to engineers and procurement teams specifying through-hole, high-voltage capacitors for industrial and general-purpose power electronics designs that require clear, measurable electrical specifications and production-ready availability.

Request a quote or contact our sales team to discuss volume pricing, lead times, and packaging options for the UCP2G181MHD.