UBR2W181MND

The UBR2W181MND is a high‑voltage aluminum electrolytic capacitor from Nichicon’s UBR series. It is a miniature, radial‑lead can designed for applications that require 450 V rated voltage, elevated operating temperature, and sustained ripple handling.

Targeted for communication base station power supplies and other general‑purpose high‑voltage circuits, the part delivers long life assurance with a 5000‑hour load life at 125°C and RoHS compliance.

Key Features

• Capacitance and Voltage — 180 µF nominal capacitance with a rated voltage of 450 V and ±20% tolerance (120 Hz, 20°C).
• High ripple current capability — Rated ripple current of 1.23 A at 120 Hz (125°C) and 1.845 A at 100 kHz for improved AC stress handling.
• Extended high‑temperature life — Load life specified at 5000 hours when operated at 125°C with D.C. bias plus rated ripple current.
• Wide operating temperature range — Specified for operation from −40 °C to +125 °C.
• Radial can package — Radial lead, can style with 7.5 mm lead spacing and case dimensions φ18 × 50 mm (L: 5.0 cm × D: 1.8 cm).
• Polarized construction — Designed as a polarized electrolytic capacitor for DC applications.
• Standards and materials — RoHS compliant (2011/65/EU, (EU)2015/863) with Pb‑free leadwire and PET sleeve configuration.

Typical Applications

• Communication base station power supplies — Provides high‑voltage smoothing and ripple handling in telecom power modules.
• General‑purpose high‑voltage circuits — Suited to electronic designs that require 450 V capacitance with robust thermal endurance.
• Industrial power electronics — Useful where extended life at elevated temperatures and significant ripple current capability are needed.

Unique Advantages

• High‑voltage capability: 450 V rating enables use in circuits that require elevated DC voltages without series stacking.
• Designed for high ripple loads: Rated ripple currents (1.23 A at 120 Hz; 1.845 A at 100 kHz) help manage AC stress and thermal rise in power supplies.
• Long life at elevated temperature: 5000‑hour endurance at 125 °C supports reliable operation in high‑temperature environments.
• Compact radial can: φ18 × 50 mm package with 7.5 mm lead spacing provides a space‑efficient solution for through‑hole mounting.
• Regulatory compliance: RoHS compliance supports designs that must meet restricted substance requirements.

Why Choose UBR2W181MND?

The UBR2W181MND balances high voltage, substantial capacitance, and robust ripple handling in a compact radial can package. Its 450 V rating, 180 µF capacitance, and 5000‑hour life at 125 °C make it appropriate for designers addressing demanding thermal and electrical stress in communication and general‑purpose high‑voltage power circuits.

Manufactured by Nichicon as part of the UBR series, this capacitor is positioned for engineers who need verified high‑temperature endurance, measurable ripple performance, and RoHS compliance in through‑hole form factors.

Request a quote or submit an inquiry to evaluate the UBR2W181MND for your next high‑voltage design project.