UBR2W390MND

The UBR2W390MND is a 39 µF, 450 V aluminum electrolytic capacitor in a radial can package from Nichicon's UBR series. It is a miniature, high‑voltage electrolytic designed for applications that require elevated temperature endurance and high ripple handling.

Targeted use cases include communication base station power supplies and other high‑voltage power electronics where long life and reliable ripple performance at elevated temperatures are required. The part offers a compact footprint and a rated operating range from −40 °C to +125 °C with a specified load life of 5000 hours at 125 °C.

Key Features

• Capacitance & Voltage — Rated at 39 µF and 450 V, suitable for high‑voltage filtering and energy‑storage roles in power assemblies.
• High ripple current capability — Rated ripple current 360 mArms at 120 Hz (125 °C) and 540 mA at 100 kHz; frequency coefficient supports increased ripple at higher frequencies (up to 1.50× at ≥100 kHz for 39–180 µF).
• High‑temperature endurance — Load life specified at 5000 hours at 125 °C with D.C. bias plus rated ripple current applied, supporting sustained operation in hot environments.
• Wide operating temperature range — Specified from −40 °C to +125 °C for use across a broad set of thermal conditions.
• Compact radial can package — Case dimensions φ12.5 × 31.5 mm (L: 3.15 × D: 1.25 cm), radial lead spacing 5.0 mm, suitable for densely packed power boards that require through‑hole mounting.
• Electrical characteristics — Capacitance tolerance ±20% (120 Hz, 20 °C), tan δ = 0.24, and specified leakage current 802 μA after 1 minute at 20 °C (per datasheet conditions).
• RoHS compliance — Meets the RoHS directive (2011/65/EU, (EU)2015/863), supporting regulatory requirements for lead‑free assembly.

Typical Applications

• Communication base station power supplies — Provides high‑voltage filtering and ripple handling in station DC link and intermediate power stages where elevated temperature life is required.
• High‑voltage power electronics — Used for smoothing and energy buffering in high‑voltage assemblies that need compact, through‑hole capacitors.
• General purpose power filtering — Suitable for designers needing a 450 V electrolytic with long life and reliable ripple performance for varied power supply designs.

Unique Advantages

• Long lifetime at elevated temperature — 5000 hours rated life at 125 °C ensures predictable aging for designs exposed to sustained high temperatures.
• Strong ripple handling across frequency — Specified ripple values at 120 Hz and 100 kHz plus frequency coefficients enable designers to size capacitors with confidence for both low and high frequency ripple environments.
• Compact high‑voltage form factor — The φ12.5×31.5 mm package (lead spacing 5.0 mm) delivers 39 µF at 450 V in a small footprint for space‑constrained boards.
• Clear electrical specifications — Datasheet values for tan δ, leakage current, and rated ripple provide measurable parameters for design validation and reliability planning.
• Regulatory readiness — RoHS compliance supports restriction of hazardous substances for global product deployment.

Why Choose UBR2W390MND?

UBR2W390MND positions itself as a reliable, miniature 450 V electrolytic solution for high‑voltage power designs that require durable performance in elevated temperature environments. Its combination of long rated life at 125 °C, defined ripple ratings across frequency, and compact radial can package makes it suitable for communication power supplies and general high‑voltage filtering tasks.

Designed and manufactured by Nichicon, this part provides engineers with detailed electrical and mechanical data—capacitance tolerance, leakage current, tan δ, and dimensional specifications—so you can evaluate performance and integrate it confidently into production designs.

If you need pricing, availability, or a formal quote for UBR2W390MND, submit a quote request or inquiry to receive lead‑time and purchasing information.