UPT2W390MHD

The UPT2W390MHD is a high-reliability aluminum electrolytic capacitor from Nichicon’s UPT series. It is a miniature, radial-lead polarized capacitor rated at 39 µF and 450 V, designed for general-purpose and ballast applications that require high ripple handling and long endurance.

Key value propositions include high ripple-current capability across low and high frequencies, a long 5 000‑hour endurance at 105 °C, and compact radial can packaging with 5 mm lead spacing for through-hole PCB assemblies.

Key Features

• Capacitance & Voltage — 39 µF nominal capacitance at a rated voltage of 450 V, suitable for high-voltage smoothing and energy-storage roles within its rated limits.
• High Ripple Current — Low-frequency ripple current of 320 mA (120 Hz) and high-frequency ripple current of 512 mA (10 kHz), enabling use in circuits with significant AC ripple content.
• Long Endurance — Rated for 5 000 hours at 105 °C under DC bias plus rated ripple current, with specified limits on capacitance change, tan δ, and leakage after the endurance test.
• Thermal Range — Wide operating temperature range from −40 °C to +105 °C for stable performance in varied environments.
• Loss & Leakage Characteristics — Tangent of loss angle (tan δ) specified at 0.20 (measured at 20 °C, 120 Hz) and a measured leakage current of 1 063 µA (value provided for this part).
• Package & Mounting — Radial lead, polarized can with case diameter φ12.5 × 40 mm length and 5.0 mm lead spacing; available in bulk (no terminal forming) or bag packing. RoHS compliant and in mass production.
• Capacitance Tolerance — ±20% at 120 Hz, 20 °C.

Typical Applications

• Ballast Circuits — Suited for ballast applications where the product’s high ripple-current capability and voltage rating support reliable operation under AC drive conditions.
• General-Purpose Power Electronics — Used for smoothing and energy storage in general-purpose power equipment that requires a 450 V, 39 µF polarized capacitor with extended high-temperature life.
• High-Ripple Circuits — Appropriate for circuits with substantial low- or high-frequency ripple, leveraging specified ripple current ratings at 120 Hz and 10 kHz.

Unique Advantages

• High ripple-handling capability: Rated ripple currents of 320 mA (120 Hz) and 512 mA (10 kHz) reduce ripple-related heating and extend service life in demanding AC environments.
• Extended high-temperature life: 5 000 hours endurance at 105 °C ensures predictable aging and long-term performance in elevated-temperature installations.
• Compact radial can: φ12.5 × 40 mm form factor with 5 mm lead spacing balances a small footprint with through-hole mounting robustness.
• Measurable electrical stability: Specified tan δ (0.20 at 20 °C/120 Hz) and a defined leakage current provide clear electrical limits for design verification.
• RoHS compliant and production-ready: Conforms to RoHS requirements and is available in mass-production packaging options for volume assembly.

Why Choose UPT2W390MHD?

UPT2W390MHD is positioned for engineers and procurement teams seeking a compact, high-voltage electrolytic capacitor that combines strong ripple-current capability with long-term thermal endurance. Its 450 V rating, 39 µF capacitance, and 5 000‑hour life at 105 °C make it suitable for designs where predictable aging and sustained ripple performance are important.

Because it is part of Nichicon’s UPT series, the part delivers verified electrical parameters and packaging options that support through-hole assembly workflows, making it a practical choice for ballast manufacturers and general-purpose power electronics designers who prioritize measurable specifications and reliable supply.

To request a quote, check availability, or submit a parts inquiry for UPT2W390MHD, please contact sales or submit a quote request through your usual procurement channel.