TDK B722 Series Varistor, 20V ac, 3.1J

The TDK B722 Series (formerly Epcos) are robust, round radial leaded SIOV metal oxide varistors (MOVs) designed to provide reliable circuit protection. These versatile components operate across a broad voltage spectrum, making them suitable for a variety of industrial and safety applications where transient voltage suppression is critical.

Acting as control or compensation elements, these varistors ensure optimal circuit conditions by clamping and diverting excessive transient voltages away from sensitive components. Their voltage-dependent nonlinear resistance characteristics allow them to respond rapidly to high-voltage spikes, safeguarding your equipment. With high surge current ratings, they offer dependable defence against electrical surges.

This specific variant is rated for 20V AC (26V DC) and has a peak energy rating of 3.1J. It features a compact 10mm disc case style, coated in a UL94V-0 rated flame-retardant epoxy resin for enhanced safety and durability. Approved to major international standards, it is built to perform reliably under demanding conditions.

Key Specifications

• Voltage Rating: 20V AC / 26V DC
• Clamping Voltage (Max): 65V
• Peak Surge Current (8/20µs): 500A
• Peak Energy (10/1000µs): 3.1J
• Operating Temperature Range: -40°C to +85°C
• Voltage Tolerance: Available in ±10% and ±5%
• Case Style: 10mm Disc
• Coating: Epoxy resin, UL94V-0 flame retardant
• Approvals: UL, CSA, VDE, CQC (S05/07, S10/S14, S20), IEC

With an endurance rating of 1000 hours at 85°C, this TDK varistor delivers long-term stability and protection for your electronic circuits.