UHW1V391MPD

The UHW1V391MPD is a miniature, high-reliability aluminum electrolytic capacitor from Nichicon's UHW series. It is a radial-lead, polarized electrolytic designed for general-purpose electronic applications where compact size and strong ripple-current capability are required.

Built for demanding operating conditions, the UHW1V391MPD combines a 390 µF capacitance at 35 V with low impedance and specified ripple-current ratings to support circuitry that experiences substantial AC ripple and high-frequency content.

Key Features

• Electrical Ratings — 390 µF nominal capacitance with tolerance of −20% to +20% and rated voltage of 35 V.
• Low impedance and dissipation — Specified impedance of 90 mΩ and tanδ (DF) of 0.11 measured at 20°C, 120 Hz.
• High ripple-current capability — Low-frequency ripple current 1.0 A (120 Hz) and high-frequency ripple current 2.0 A (10 kHz), for applications with significant AC ripple.
• Leakage current — Specified leakage current of 136.5 µA after standard initial charge conditions.
• Robust temperature and lifetime — Rated for operation from −40°C to +105°C with an endurance of 10,000 hours at 105°C.
• Radial-lead package — Compact φ10 × 16 mm can with 5 mm lead spacing (±0.5 mm), radial mounting for through-hole assemblies.
• Packaging options & compliance — Available in bulk (no terminal forming) or bag packing; RoHS compliant.

Typical Applications

• General-purpose electronics — For designs requiring a compact 390 µF/35 V electrolytic solution in a radial-lead package.
• High-ripple current circuits — Suitable where specified ripple current capacity (1 A @120 Hz, 2 A @10 kHz) is needed to manage AC stress on DC rails.
• High-frequency decoupling and filtering — Low impedance at higher frequencies supports decoupling and filtering where 10 kHz content is present.

Unique Advantages

• High capacitance in a small footprint: 390 µF packaged in a φ10 × 16 mm can for space-constrained PCBs.
• Engineered for ripple-heavy environments: Rated ripple currents at 120 Hz and 10 kHz accommodate both low- and high-frequency ripple components.
• Long-term thermal endurance: 10,000-hour life at 105°C supports designs targeting multi-year operation under elevated temperatures.
• Predictable electrical behavior: Low tanδ and specified impedance provide quantifiable AC performance for power-stage design and modeling.
• Practical mounting and handling: Radial-lead format with defined lead spacing and packaging choices simplifies through-hole assembly and inventory handling.
• Regulatory compliance: RoHS-compliant construction for environmental conformance in applicable regions.

Why Choose UHW1V391MPD?

The UHW1V391MPD is positioned as a compact, high-ripple-capacity aluminum electrolytic capacitor for engineers who need reliable performance in space-limited through-hole designs. Its combination of 390 µF capacitance, 35 V rating, low impedance, and specified ripple-current performance makes it suitable for general-purpose applications that demand measurable AC handling and long-term endurance.

Manufactured by Nichicon as part of the UHW series, this part delivers a balance of electrical performance and thermal life (10,000 hours at 105°C), along with standard radial-lead packaging and RoHS compliance—attributes that support robust, maintainable designs.

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