UBR2W141MND

The UBR2W141MND from Nichicon is a high-voltage, miniature aluminum electrolytic capacitor in the UBR series, designed for radial-lead mounting in compact assemblies. It combines 450 V rated voltage with 140 µF capacitance and a compact 18 × 40 mm can size to serve high-voltage, high-ripple applications.

Targeted for communication base station power supplies and other general-purpose high-voltage power systems, this part emphasizes high ripple-current capability and long life: rated for 5000 hours at 125°C and compliant with RoHS directives.

Key Features

• Electrical Performance: 140 µF nominal capacitance at 450 V rated voltage with capacitance tolerance ±20% (120 Hz, 20°C).
• High Ripple Current: Rated ripple current of 980 mA at 120 Hz (125°C) and 1.47 A at 100 kHz; frequency coefficient of rated ripple current reaches 1.50 at 100 kHz or more.
• Thermal & Endurance: Operating temperature range −40°C to +125°C with a specified load life of 5000 hours at 125°C under rated conditions; shelf life and endurance characteristics are defined by the UBR series specifications.
• Leakage & Loss Characteristics: Loss tangent (tan δ) of 0.24 at 120 Hz, 20°C; leakage current specified by I = 0.04CV + 100 (µA) after 1 minute at 20°C.
• Package & Mounting: Radial-lead can (18 × 40 mm case for this capacitance) with 7.5 mm lead spacing and Pb‑free leadwire and PET sleeve construction.
• Regulatory Compliance: Compliant with RoHS directives (2011/65/EU, (EU)2015/863).

Typical Applications

• Communication Base Station Power Supplies: Provides high-voltage smoothing and ripple handling for DC rails in base station power modules where long life and high ripple capacity are required.
• High-Voltage Power Supplies: Suited for general-purpose high-voltage power supply filtering and decoupling in compact assemblies.
• Industrial Power Systems (General Purpose): Use where a combination of high voltage rating, elevated temperature endurance and radial-lead packaging is needed.

Unique Advantages

• High-Voltage Capability: 450 V rating enables reduction of component count in high-voltage designs by providing larger bulk capacitance per capacitor.
• Designed for High Ripple: Measured ripple ratings at both low and high frequencies (980 mA at 120 Hz; 1.47 A at 100 kHz) reduce thermal stress and improve stability in high-ripple environments.
• Long Operating Life at Elevated Temperature: 5000 hours at 125°C endurance supports reliability targets for continuous high-temperature operation.
• Compact Radial Package: 18 × 40 mm can with 7.5 mm lead spacing offers a space-efficient radial solution for through-hole assemblies.
• Measured Electrical Characteristics: Specified tan δ (0.24) and a defined leakage current formula provide predictable electrical behavior for design verification and thermal budgeting.
• RoHS Compliant: Meets current RoHS requirements for regulatory compliance in global product deployments.

Why Choose UBR2W141MND?

UBR2W141MND is positioned for engineers who need a compact, high-voltage electrolytic capacitor with proven ripple capability and extended high-temperature life. Its combination of 450 V rating, 140 µF capacitance, and 5000-hour endurance at 125°C makes it well suited for communication base station power supplies and other high-voltage, high-ripple applications that require predictable electrical performance.

Selecting a Nichicon UBR-series part provides established specification data—leakage current, tan δ, ripple ratings and frequency coefficients—that supports robust design verification and thermal planning in production systems.

If you require pricing, availability or a formal quote for UBR2W141MND, request a quote or submit an inquiry and our team will provide the details you need for procurement and design planning.