UHW1A392MHD

The UHW1A392MHD is an aluminum electrolytic capacitor in Nichicon’s UHW series, designed for miniature size with high ripple current capability and high reliability. This radial-lead, can-style capacitor is intended for general-purpose electronic applications that require compact energy storage with low impedance at higher frequencies.

Key value propositions include lower impedance in the high-frequency range, a compact package footprint, and RoHS compliance for environmental conformity.

Key Features

• Capacitance & Voltage — 3.9 mF rated at 10 V, suitable for applications needing moderate capacitance in a low-voltage design.
• High Ripple Current — Supports 2.4 A at 120 Hz and 3.2 A at 10 kHz, enabling effective handling of AC ripple and switching currents.
• Low High-Frequency Impedance — Specified impedance of 45 mΩ and series design characteristics provide lower impedance at higher frequencies.
• Compact Radial Package — Radial lead, can-style package with 5 mm lead spacing and size L: 2.5 × D: 1.25 cm for space-constrained layouts.
• Wide Operating Temperature — Rated for −40°C to +105°C to support a broad ambient temperature range.
• Long Endurance — Lifetime specified as 10,000 hours at 105°C under rated conditions.
• Polarity & Tolerance — Polarized capacitor with capacitance tolerance of −20% to +20%.
• RoHS Compliant — Conforms to RoHS directives (2011/65/EU, (EU)2015/863).

Typical Applications

• General-Purpose Power Filtering and Decoupling — Compact, high-ripple capability and low impedance at high frequency make it suitable for smoothing and decoupling in power circuits.
• Switching Regulator Support — Handles elevated ripple currents at switching frequencies (notably 10 kHz), helping stabilize regulator outputs.
• Embedded and Consumer Electronics — Small radial-can footprint fits space-constrained boards that require reliable bulk capacitance within the specified temperature range.

Unique Advantages

• Compact footprint with high ripple capacity: The small can package (L: 2.5 × D: 1.25 cm) combined with specified high ripple current supports denser board designs without sacrificing ripple handling.
• Low impedance at high frequency: 45 mΩ impedance and series design characteristics reduce voltage ripple at higher switching frequencies, improving circuit stability.
• Designed for elevated-temperature endurance: 10,000 hours at 105°C offers predictable long-term behavior in thermally demanding environments.
• Through-hole radial mounting: Radial leads with 5 mm spacing simplify through-hole assembly and mechanical retention on PCBs.
• Regulatory compliance: RoHS conformity supports use in designs requiring restricted substances compliance.

Why Choose UHW1A392MHD?

The UHW1A392MHD delivers a balance of compact size, high ripple-current capability, and reliable thermal endurance from Nichicon’s UHW series. Its low high-frequency impedance and specified ripple current ratings make it a practical choice for designs that need effective smoothing and decoupling in a small, radial-can package.

This capacitor is well suited for engineers and procurement teams working on general-purpose electronic systems that demand predictable lifetime performance (10,000 hours at 105°C), RoHS compliance, and simple through-hole assembly.

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