UPTW6390MHD

The UPTW6390MHD is a radial-lead aluminum electrolytic capacitor in Nichicon’s UPT series, designed for miniature, high-ripple-current, long-life applications. This 39 µF, 420 V polarized capacitor delivers high-voltage filtering and energy storage in a compact φ12.5 × 35.5 mm can with 5.0 mm lead spacing.

Its combination of high ripple-current capability, 5000-hour endurance at 105°C and a wide operating range (−40°C to 105°C) makes it suitable for general-purpose power applications, including ballast circuits and other high-voltage power systems.

Key Features

• Electrical rating — 39 µF nominal capacitance with a rated voltage of 420 V and capacitance tolerance of ±20% (at 120 Hz, 20°C).
• High ripple-current performance — Rated ripple currents of 310 mA at 120 Hz and 496 mA at higher frequency support heavy AC ripple handling in power circuits.
• Loss characteristics — Tan δ (DF) of 0.20 measured at 20°C, 120 Hz, suitable for predictable dissipation and AC performance.
• Leakage current — Specified leakage current of 992.8 µA (measurement condition: 20°C after 2 minutes), enabling reliable DC service behavior.
• Long endurance — Rated for 5000 hours at 105°C under DC bias plus rated ripple current, maintaining capacitance within ±20% after endurance testing.
• Compact radial-can package — φ12.5 × 35.5 mm can with 5.0 mm lead spacing, radial lead mounting for through-hole assemblies; available in bulk or bag packing (no terminal forming).
• Wide ambient range — Operating temperature from −40°C to 105°C for broader environmental compatibility.
• RoHS compliant — Meets RoHS requirements as specified in the product information.

Typical Applications

• Ballast and high-voltage lighting circuits — High ripple-current capability and 420 V rating make it suitable for ballast applications requiring reliable filtering under AC ripple.
• Power supply filtering — Compact size and elevated voltage rating support smoothing and decoupling in high-voltage DC power supplies.
• Industrial power electronics — Long 5000-hour life at 105°C and wide temperature range are useful in industrial power modules where sustained thermal and ripple stress occurs.
• General-purpose high-voltage applications — Polarized aluminum electrolytic solution for designs requiring 39 µF at 420 V in a through-hole form factor.

Unique Advantages

• High-voltage capability: 420 V rating supports use in higher-voltage power circuits without up-rating components.
• High ripple tolerance: Defined ripple currents (310 mA at 120 Hz, 496 mA at higher frequency) enable effective AC ripple absorption and thermal management planning.
• Proven endurance: 5000 hours at 105°C under rated conditions provides a clear, verifiable lifetime metric for reliability planning.
• Compact radial-can footprint: φ12.5 × 35.5 mm size and 5.0 mm lead spacing deliver a space-efficient through-hole solution for PCB layouts.
• Predictable electrical behavior: Specified tan δ and leakage current figures give clear parameters for loss and leakage budgeting in designs.
• Regulatory readiness: RoHS compliance supports use in environments requiring lead-free material conformance.

Why Choose UPTW6390MHD?

UPTW6390MHD positions itself as a compact, high-voltage electrolytic capacitor optimized for applications that demand sustained ripple handling and long-term stability at elevated temperatures. Its combination of 420 V rating, specified ripple currents, and a 5000-hour endurance at 105°C make it a practical choice for engineers designing ballast circuits, high-voltage power supplies, and industrial power electronics where through-hole mounting and predictable lifetime are important.

Designed as part of Nichicon’s UPT series, this part offers measurable specifications for capacitance, dissipation factor, leakage, and endurance—allowing straightforward integration, reliability assessment, and lifecycle planning for production designs.

Request a quote or contact sales to check availability, request pricing, or discuss how UPTW6390MHD fits your application and procurement needs.