TDK Epcos B722 20mm Varistor 184J 320V AC

The TDK Epcos B722 20mm Varistor is a metal oxide varistor (MOV) rated 320V AC with a 184J peak energy rating, designed for reliable circuit protection. Its round, radial-leaded design features a flame-retardant epoxy resin coating that provides a robust defence against damaging voltage transients. Being voltage-dependent, it acts as a compensation or control element, clamping excessive transient voltages to safe levels.

Overview

The TDK Epcos B722 StandarD series is intended for numerous industrial and safety applications where maintaining optimal circuit conditions is critical. It offers a wide operating voltage range, with a DC voltage rating of 420V and a maximum clamping voltage of 840V. The supplied dimensions are 3.3 (width), 1.5 (depth) and 4.3 (height), and the component weighs 8 gm.

Key Features

• High peak surge current rating of up to 8kA (8/20µs)
• Peak energy rating of 184J (10/1000µS)
• Operating temperature range of -40°C to +85°C
• Endurance rating of 1000 hours at 85°C
• Voltage tolerance options of ±10% and ±5%
• Flame-retardant epoxy resin coating (UL94V-0)

Certifications and Standards

The component meets international safety and quality standards, including approvals from UL, CSA, VDE and IEC. It also complies with CQC standards (S05/07, S10/S14, S20) and carries a UL94V-0 flame-retardant rating, supporting its use in safety-conscious environments.

Applications

• Circuit protection
• Over-voltage protection
• Industrial applications
• Safety applications

Choose the TDK Epcos B722 20mm Varistor when you need a 320V AC metal oxide varistor with 184J energy handling, international approvals and a wide operating temperature range for over-voltage protection.